diff --git a/Makefile.am b/Makefile.am
index 6bba2c83..0c622b0e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,158 +1,158 @@
 ## Process this file with automake to produce Makefile.in
 # Copyright (C) 1992, 1999, 2000, 2002 Free Software Foundation, Inc.
 #
 # This file is part of Libgcrypt.
 #
 # Libgcrypt is free software; you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as
 # published by the Free Software Foundation; either version 2.1 of
 # the License, or (at your option) any later version.
 #
 # Libgcrypt is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU Lesser General Public License for more details.
 #
 # You should have received a copy of the GNU Lesser General Public
 # License along with this program; if not, see <http://www.gnu.org/licenses/>.
 # SPDX-License-Identifier: LGPL-2.1-or-later
 
 # Location of the released tarball archives.  This is prefixed by
 # the variable RELEASE_ARCHIVE in ~/.gnupg-autogen.rc.  For example:
 # RELEASE_ARCHIVE=wk@somehost:archive/tarballs
 RELEASE_ARCHIVE_SUFFIX  = libgcrypt/v1.9
 # The variable RELEASE_SIGNING_KEY in ~/.gnupg-autogen.rc is used
 # to specify the key for signing.  For example:
 # RELEASE_SIGNKEY=D8692123C4065DEA5E0F3AB5249B39D24F25E3B6
 
 
 ACLOCAL_AMFLAGS = -I m4
 DISTCHECK_CONFIGURE_FLAGS = --disable-random-daemon --enable-doc \
                             --enable-random=auto
 
 # (A suitable gitlog-to-changelog script can be found in GnuPG master.)
 GITLOG_TO_CHANGELOG=gitlog-to-changelog
 
 if BUILD_DOC
 doc = doc
 else
 doc =
 endif
 
 
 DIST_SUBDIRS = m4 compat mpi cipher random src doc tests
 SUBDIRS =         compat mpi cipher random src $(doc) tests
 
 EXTRA_DIST = autogen.sh autogen.rc README.GIT LICENSES      	           \
              ChangeLog-2011 build-aux/ChangeLog-2011 doc/ChangeLog-2011    \
              m4/ChangeLog-2011 cipher/ChangeLog-2011 src/ChangeLog-2011    \
              random/ChangeLog-2011 tests/ChangeLog-2011 mpi/ChangeLog-2011 \
              build-aux/git-log-footer build-aux/git-log-fix VERSION
 
 DISTCLEANFILES =
 
 
 # Add all the files listed in "distfiles" files to the distribution
 dist-hook: gen-ChangeLog
 	@set -e; \
 	 for file in `cd $(top_srcdir); \
 	      find mpi -type f -name distfiles`; do \
 	    dir=`dirname $$file` ; $(mkinstalldirs) $(distdir)/$$dir ; \
 	    for i in distfiles `cat $(top_srcdir)/$$file` ; do \
 		ln $(top_srcdir)/$$dir/$$i $(distdir)/$$dir/$$i 2> /dev/null \
 		|| cp -p $(top_srcdir)/$$dir/$$i $(distdir)/$$dir/$$i; \
 	    done ; \
 	done
 
 distcheck-hook:
 	set -e; ( \
 	pref="#+macro: $$(echo $(PACKAGE_NAME)|tr '-' '_')_" ;\
 	reldate="$$(date -u +%Y-%m-%d)" ;\
         echo "$${pref}ver  $(PACKAGE_VERSION)"  ;\
         echo "$${pref}date $${reldate}" ;\
         list='$(DIST_ARCHIVES)'; for i in $$list; do \
 	  case "$$i" in *.tar.bz2) \
             echo "$${pref}size $$(wc -c <$$i|awk '{print int($$1/1024)}')k" ;\
 	    echo "$${pref}sha1 $$(sha1sum <$$i|cut -d' ' -f1)" ;\
 	    echo "$${pref}sha2 $$(sha256sum <$$i|cut -d' ' -f1)" ;;\
 	  esac;\
 	done ) | tee $(distdir).swdb
 
 
 
 gen_start_date = 2011-12-01T14:00:00
 .PHONY: gen-ChangeLog
 gen-ChangeLog:
 	if test -e $(top_srcdir)/.git; then				\
 	  (cd $(top_srcdir) &&                      			\
 	    $(GITLOG_TO_CHANGELOG) --append-dot --tear-off		\
 	    --amend=build-aux/git-log-fix	 			\
 	    --since=$(gen_start_date) ) > $(distdir)/cl-t;		\
           cat $(top_srcdir)/build-aux/git-log-footer >> $(distdir)/cl-t;\
 	  rm -f $(distdir)/ChangeLog;					\
 	  mv $(distdir)/cl-t $(distdir)/ChangeLog;			\
 	fi
 
 
 
 stowinstall:
 	$(MAKE) $(AM_MAKEFLAGS) install prefix=/usr/local/stow/libgcrypt
 
 # Macro to help the release target.
 RELEASE_NAME = $(PACKAGE_TARNAME)-$(PACKAGE_VERSION)
 
 release:
 	+(set -e;\
 	 if [ "$(abs_top_builddir)" = "$(abs_top_srcdir)" ]; then \
            echo "error: build directory must not be the source directory" >&2;\
 	   exit 2;\
          fi ;\
 	 echo "/* Build started at $$(date -uIseconds) */" ;\
 	 cd $(top_srcdir); \
 	 ./autogen.sh --force; \
 	 cd $(abs_top_builddir); \
 	 rm -rf dist; mkdir dist ; cd dist ; \
 	 $(abs_top_srcdir)/configure --enable-maintainer-mode; \
 	 $(MAKE) distcheck; \
 	 echo "/* Build finished at $$(date -uIseconds) */" ;\
          echo "/*" ;\
 	 echo " * Please run the final step interactivly:" ;\
 	 echo " *   make sign-release" ;\
 	 echo " */" ;\
 	) 2>&1 | tee "$(RELEASE_NAME).buildlog"
 
 sign-release:
 	 +(set -e; \
 	  cd dist; \
 	  x=$$(grep '^RELEASE_ARCHIVE=' $$HOME/.gnupg-autogen.rc|cut -d= -f2);\
           if [ -z "$$x" ]; then \
              echo "error: RELEASE_ARCHIVE missing in ~/.gnupg-autogen.rc">&2; \
              exit 2;\
           fi;\
           myarchive="$$x/$(RELEASE_ARCHIVE_SUFFIX)";\
 	  x=$$(grep '^RELEASE_SIGNKEY=' $$HOME/.gnupg-autogen.rc|cut -d= -f2);\
           if [ -z "$$x" ]; then \
              echo "error: RELEASE_SIGNKEY missing in ~/.gnupg-autogen.rc">&2; \
              exit 2;\
           fi;\
 	  mysignkey="$$x";\
 	  files1="$(RELEASE_NAME).tar.bz2 \
 	          $(RELEASE_NAME).tar.gz" ; \
 	  files2="$(RELEASE_NAME).tar.bz2.sig \
 	          $(RELEASE_NAME).tar.gz.sig  \
 		  $(RELEASE_NAME).swdb \
 		  $(RELEASE_NAME).buildlog" ;\
 	  echo "/* Signing the source tarball ..." ;\
 	  gpg -sbu $$mysignkey $(RELEASE_NAME).tar.bz2 ;\
 	  gpg -sbu $$mysignkey $(RELEASE_NAME).tar.gz  ;\
 	  cat $(RELEASE_NAME).swdb >swdb.snippet;\
 	  echo >>swdb.snippet ;\
 	  sha1sum $${files1} >>swdb.snippet ;\
           cat "../$(RELEASE_NAME).buildlog" swdb.snippet \
                | gzip >$(RELEASE_NAME).buildlog ;\
           echo "Copying to archive $$myarchive ..." ;\
-	  scp -vp $${files1} $${files2} $${myarchive}/ || true;\
+	  scp -p $${files1} $${files2} $${myarchive}/ || true;\
 	  echo '/*' ;\
 	  echo ' * All done; for checksums see dist/swdb.snippet' ;\
 	  echo ' */' ;\
          )
diff --git a/NEWS b/NEWS
index d6d63398..69ab0743 100644
--- a/NEWS
+++ b/NEWS
@@ -1,1440 +1,1440 @@
-Noteworthy changes in version 1.9.2 (unreleased)  [C23/A3/R_]
+Noteworthy changes in version 1.9.2 (2021-02-17)  [C23/A3/R2]
 ------------------------------------------------
 
  * Bug fixes:
 
    - Fix build problem for macOS in the random code.  [#5268]
 
    - Fix building with --disable-asm on x86.  [#5277]
 
    - Check public key for ECDSA verify operation.  [#5282]
 
    - Make sure gcry_get_config (NULL) returns a nul-terminated string.
      [8716e4b2ad]
 
    - Fix a memory leak in the ECDH code.  [289543544e]
 
    - Fix a reading beyond end of input buffer in SHA2-avx2.
      [24af2a55d8]
 
  * Other features:
 
    - New test driver to allow for standalone regression
      tests. [b142da4c88]
 
  Release-info: https://dev.gnupg.org/T5276
 
 
 Noteworthy changes in version 1.9.1 (2021-01-29)  [C23/A3/R1]
 ------------------------------------------------
 
  * Bug fixes:
 
    - Fix exploitable bug in hash functions introduced with 1.9.0.
      [#5275]
 
    - Return an error if a negative MPI is used with sexp scan
      functions.  [#4964]
 
    - Check for operational FIPS in the random and KDF functions.
      [#5243]
 
    - Fix compile error on ARMv7 with NEON disabled.  [#5251]
 
    - Fix self-test in KDF module.  [#5254]
 
    - Improve assembler checks for better LTO support.  [#5255]
 
    - Fix assember problem on macOS running on M1.  [#5157]
 
    - Support older macOS without posix_spawn. [#5159]
 
    - Fix 32-bit cross build on x86.  [#5257]
 
    - Fix non-NEON ARM assembly implementation for SHA512.  [#5263]
 
    - Fix build problems with the cipher_bulk_ops_t typedef.  [#5264]
 
    - Fix Ed25519 private key handling for preceding ZEROs. [#5267]
 
    - Fix overflow in modular inverse implementation.  [#5269]
 
    - Fix register access for AVX/AVX2 implementations of Blake2.
      [#5271].
 
  * Performance:
 
    - Add optimized cipher and hash functions for s390x/zSeries.
 
-   - Use hardware bit counting functionx when available.
+   - Use hardware bit counting functions when available.
 
  * Internal changes:
 
    - The macOS getentropy syscall is used when available.  [#5268]
 
    - Update DSA functions to match FIPS 186-3.  [30ed9593f6]
 
    - New self-tests for CMACs and KDFs.  [385a89e35b,7a0da24925]
 
    - Add bulk cipher functions for OFB and GCM modes.
      [f12b6788f2,f4e63e92dc]
 
  Release-info: https://dev.gnupg.org/T5259
 
 
 Noteworthy changes in version 1.9.0 (2021-01-19)  [C23/A3/R0]
 ------------------------------------------------
 
  * New and extended interfaces:
 
    - New curves Ed448, X448, and SM2.
 
    - New cipher mode EAX.
 
    - New cipher algo SM4.
 
    - New hash algo SM3.
 
    - New hash algo variants SHA512/224 and SHA512/256.
 
    - New MAC algos for Blake-2 algorithms, the new SHA512 variants,
      SM3, SM4 and for a GOST variant.
 
    - New convenience function gcry_mpi_get_ui.
 
    - gcry_sexp_extract_param understands new format specifiers to
      directly store to integers and strings.
 
    - New function gcry_ecc_mul_point and curve constants for Curve448
      and Curve25519.  [#4293]
 
    - New function gcry_ecc_get_algo_keylen.
 
    - New control code GCRYCTL_AUTO_EXPAND_SECMEM to allow growing the
      secure memory area.  Also in 1.8.2 as an undocumented feature.
 
  * Performance:
 
    - Optimized implementations for Aarch64.
 
    - Faster implementations for Poly1305 and ChaCha.  Also for
      PowerPC.  [b9a471ccf5,172ad09cbe,#4460]
 
    - Optimized implementations of AES and SHA-256 on PowerPC.
      [#4529,#4530]
 
    - Improved use of AES-NI to speed up AES-XTS (6 times faster).
      [a00c5b2988]
 
    - Improved use of AES-NI for OCB.  [eacbd59b13,e924ce456d]
 
    - Speedup AES-XTS on ARMv8/CE (2.5 times faster).  [93503c127a]
 
    - New AVX and AVX2 implementations for Blake-2 (1.3/1.4 times
      faster).  [af7fc732f9, da58a62ac1]
 
    - Use Intel SHA extension for SHA-1 and SHA-256 (4.0/3.7 times
      faster).  [d02958bd30, 0b3ec359e2]
 
    - Use ARMv7/NEON accelerated GCM implementation (3 times faster).
      [2445cf7431]
 
    - Use of i386/SSSE3 for SHA-512 (4.5 times faster on Ryzen 7).
      [b52dde8609]
 
    - Use 64 bit ARMv8/CE PMULL for CRC (7 times faster).  [14c8a593ed]
 
    - Improve CAST5 (40% to 70% faster).  [4ec566b368]
 
    - Improve Blowfish (60% to 80% faster).  [ced7508c85]
 
  * Bug fixes:
 
    - Fix infinite loop due to applications using fork the wrong
      way.  [#3491][also in 1.8.4]
 
    - Fix possible leak of a few bits of secret primes to pageable
      memory.  [#3848][also in 1.8.4]
 
    - Fix possible hang in the RNG (1.8.3 only).  [#4034][also in 1.8.4]
 
    - Several minor fixes.  [#4102,#4208,#4209,#4210,#4211,#4212]
      [also in 1.8.4]
 
    - On Linux always make use of getrandom if possible and then use
      its /dev/urandom behaviour.  [#3894][also in 1.8.4]
 
    - Use blinding for ECDSA signing to mitigate a novel side-channel
      attack.  [#4011,CVE-2018-0495] [also in 1.8.3, 1.7.10]
 
    - Fix incorrect counter overflow handling for GCM when using an IV
      size other than 96 bit.  [#3764] [also in 1.8.3, 1.7.10]
 
    - Fix incorrect output of AES-keywrap mode for in-place encryption
      on some platforms.  [also in 1.8.3, 1.7.10]
 
    - Fix the gcry_mpi_ec_curve_point point validation function.
      [also in 1.8.3, 1.7.10]
 
    - Fix rare assertion failure in gcry_prime_check.  [also in 1.8.3]
 
    - Do not use /dev/srandom on OpenBSD.  [also in 1.8.2]
 
    - Fix test suite failure on systems with large pages. [#3351]
      [also in 1.8.2]
 
    - Fix test suite to not use mmap on Windows.  [also in 1.8.2]
 
    - Fix fatal out of secure memory status in the s-expression parser
      on heavy loaded systems.  [also in 1.8.2]
 
    - Fix build problems on OpenIndiana et al. [#4818, also in 1.8.6]
 
    - Fix GCM bug on arm64 which troubles for example OMEMO.  [#4986,
      also in 1.8.6]
 
    - Detect a div-by-zero in a debug helper tool.  [#4868, also in 1.8.6]
 
    - Use a constant time mpi_inv and related changes.  [#4869, partly
      also in 1.8.6]
 
    - Fix mpi_copy to correctly handle flags of opaque MPIs.
      [also in 1.8.6]
 
    - Fix mpi_cmp to consider +0 and -0 the same.  [also in 1.8.6]
 
    - Fix extra entropy collection via clock_gettime.  Note that this
      fallback code path is not used on any decent hardware.  [#4966,
      also in 1.8.7]
 
    - Support opaque MPI with gcry_mpi_print.  [#4872, also in 1.8.7]
 
    - Allow for a Unicode random seed file on Windows.  [#5098, also in
      1.8.7]
 
  * Other features:
 
    - Add OIDs from RFC-8410 as aliases for Ed25519 and Curve25519.
      [also in 1.8.6]
 
    - Add mitigation against ECC timing attack CVE-2019-13627.  [#4626]
 
    - Internal cleanup of the ECC implementation.
 
    - Support reading EC point in compressed format for some curves.
      [#4951]
 
  * Interface changes relative to the 1.8.0 release:
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    gcry_mpi_get_ui                 NEW function.
    GCRYCTL_AUTO_EXPAND_SECMEM      NEW control code.
    gcry_sexp_extract_param         EXTENDED.
    GCRY_CIPHER_GOST28147_MESH      NEW cipher algo.
    GCRY_CIPHER_SM4                 NEW cipher algo.
    GCRY_CIPHER_MODE_EAX            NEW mode.
    GCRY_ECC_CURVE25519             NEW curve id.
    GCRY_ECC_CURVE448               NEW curve id.
    gcry_ecc_get_algo_keylen        NEW function.
    gcry_ecc_mul_point              NEW function.
    GCRY_MD_SM3                     NEW hash algo.
    GCRY_MD_SHA512_256              NEW hash algo.
    GCRY_MD_SHA512_224              NEW hash algo.
    GCRY_MAC_GOST28147_IMIT         NEW mac algo.
    GCRY_MAC_HMAC_GOSTR3411_CP      NEW mac algo.
    GCRY_MAC_HMAC_BLAKE2B_512       NEW mac algo.
    GCRY_MAC_HMAC_BLAKE2B_384       NEW mac algo.
    GCRY_MAC_HMAC_BLAKE2B_256       NEW mac algo.
    GCRY_MAC_HMAC_BLAKE2B_160       NEW mac algo.
    GCRY_MAC_HMAC_BLAKE2S_256       NEW mac algo.
    GCRY_MAC_HMAC_BLAKE2S_224       NEW mac algo.
    GCRY_MAC_HMAC_BLAKE2S_160       NEW mac algo.
    GCRY_MAC_HMAC_BLAKE2S_128       NEW mac algo.
    GCRY_MAC_HMAC_SM3               NEW mac algo.
    GCRY_MAC_HMAC_SHA512_256        NEW mac algo.
    GCRY_MAC_HMAC_SHA512_224        NEW mac algo.
    GCRY_MAC_CMAC_SM4               NEW mac algo.
 
  Release-info: https://dev.gnupg.org/T4294
 
  Release dates of 1.8.x versions:
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    Version 1.8.2 (2017-12-13)
    Version 1.8.3 (2018-06-13)
    Version 1.8.4 (2018-10-26)
    Version 1.8.5 (2019-08-29)
    Version 1.8.6 (2020-07-06)
    Version 1.8.7 (2020-10-23)
 
 
 Noteworthy changes in version 1.8.1 (2017-08-27)  [C22/A2/R1]
 ------------------------------------------------
 
  * Bug fixes:
 
    - Mitigate a local side-channel attack on Curve25519 dubbed "May
      the Fourth be With You".  [CVE-2017-0379] [also in 1.7.9]
 
    - Add more extra bytes to the pool after reading a seed file.
 
    - Add the OID SHA384WithECDSA from RFC-7427 to SHA-384.
 
    - Fix build problems with the Jitter RNG
 
    - Fix assembler code build problems on Rasbian (ARMv8/AArch32-CE).
 
 
 Noteworthy changes in version 1.8.0 (2017-07-18)  [C22/A2/R0]
 ------------------------------------------------
 
  * New interfaces:
 
    - New cipher mode XTS
 
    - New hash function Blake-2
 
    - New function gcry_mpi_point_copy.
 
    - New function gcry_get_config.
 
    - GCRYCTL_REINIT_SYSCALL_CLAMP allows to init nPth after Libgcrypt.
 
    - New global configuration file /etc/gcrypt/random.conf.
 
  * Extended interfaces:
 
    - GCRYCTL_PRINT_CONFIG does now also print build information for
      libgpg-error and the used compiler version.
 
    - GCRY_CIPHER_MODE_CFB8 is now supported.
 
    - Add Stribog OIDs.  [also in 1.7.4]
 
  * Performance:
 
    - A jitter based entropy collector is now used in addition to the
      other entropy collectors.
 
    - Optimized gcry_md_hash_buffers for SHA-256 and SHA-512.
 
    - More ARMv8/AArch32 improvements for AES, GCM, SHA-256, and SHA-1.
      [also in 1.7.4]
 
    - Add ARMv8/AArch32 assembly implementation for Twofish and
      Camellia.  [also in 1.7.4]
 
    - Add bulk processing implementation for ARMv8/AArch32.
      [also in 1.7.4]
 
    - Improve the DRBG performance and sync the code with the Linux
      version.  [also in 1.7.4]
 
  * Internal changes:
 
    - Libgpg-error 1.25 is now required.  This avoids stalling of nPth
      threads due to contention on internal Libgcrypt locks (e.g. the
      random pool lock).
 
    - The system call clamp of libgpg-error is now used to wrap the
      blocking read of /dev/random.  This allows other nPth threads to
      run while Libgcrypt is gathering entropy.
 
    - When secure memory is requested by the MPI functions or by
      gcry_xmalloc_secure, they do not anymore lead to a fatal error if
      the secure memory pool is used up.  Instead new pools are
      allocated as needed.  These new pools are not protected against
      being swapped out (mlock can't be used).  However, these days
      this is considered a minor issue and can easily be mitigated by
      using encrypted swap space.  [also in 1.7.4]
 
  * Bug fixes:
 
    - Fix AES CTR self-check detected failure in the SSSE3 based
      implementation.  [also in 1.7.6]
 
    - Remove gratuitous select before the getrandom syscall.
      [also in 1.7.6]
 
    - Fix regression in mlock detection.  [bug#2870] [also in 1.7.5]
 
    - Fix GOST 28147 CryptoPro-B S-box.   [also in 1.7.4]
 
    - Fix error code handling of mlock calls.  [also in 1.7.4]
 
    - Fix possible timing attack on EdDSA session key. [also in 1.7.7]
 
    - Fix long standing bug in secure memory implementation which could
      lead to a segv on free. [bug#3027] [also in 1.7.7]
 
    - Mitigate a flush+reload side-channel attack on RSA secret keys
      dubbed "Sliding right into disaster".  For details see
      <https://eprint.iacr.org/2017/627>.  [CVE-2017-7526] [also in 1.7.8]
 
  * Interface changes relative to the 1.7.0 release:
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    gcry_get_config                 NEW function.
    gcry_mpi_point_copy             NEW function.
    GCRYCTL_REINIT_SYSCALL_CLAMP    NEW macro.
    GCRY_MD_BLAKE2B_512             NEW constant.
    GCRY_MD_BLAKE2B_384             NEW constant.
    GCRY_MD_BLAKE2B_256             NEW constant.
    GCRY_MD_BLAKE2B_160             NEW constant.
    GCRY_MD_BLAKE2S_256             NEW constant.
    GCRY_MD_BLAKE2S_224             NEW constant.
    GCRY_MD_BLAKE2S_160             NEW constant.
    GCRY_MD_BLAKE2S_128             NEW constant.
    GCRY_CIPHER_MODE_XTS            NEW constant.
    gcry_md_info                    DEPRECATED.
 
  * Release dates of 1.7.x versions:
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    Version 1.7.10 (2018-06-13) [C21/A1/R10]
    Version 1.7.9  (2017-08-27) [C21/A1/R9]
    Version 1.7.8  (2017-06-29) [C21/A1/R8]
    Version 1.7.7  (2017-06-02) [C21/A1/R7]
    Version 1.7.6  (2017-01-18) [C21/A1/R6]
    Version 1.7.5  (2016-12-15) [C21/A1/R5]
    Version 1.7.4  (2016-12-09) [C21/A1/R4]
 
 
 Noteworthy changes in version 1.7.3 (2016-08-17)  [C21/A1/R3]
 ------------------------------------------------
 
  * Bug fixes:
 
    - Fix critical security bug in the RNG [CVE-2016-6313].  An
      attacker who obtains 580 bytes from the standard RNG can
      trivially predict the next 20 bytes of output.  Problem
      detected by Felix Dörre and Vladimir Klebanov, KIT.
 
    - Fix building of some asm modules with older compilers and CPUs.
 
  * Performance:
 
    - ARMv8/AArch32 improvements for AES, GCM, SHA-256, and SHA-1.
 
 
 Noteworthy changes in version 1.7.2 (2016-07-14)  [C21/A1/R2]
 ------------------------------------------------
 
  * Bug fixes:
 
    - Fix setting of the ECC cofactor if parameters are specified.
 
    - Fix memory leak in the ECC code.
 
    - Remove debug message about unsupported getrandom syscall.
 
    - Fix build problems related to AVX use.
 
    - Fix bus errors on ARM for Poly1305, ChaCha20, AES, and SHA-512.
 
  * Internal changes:
 
    - Improved fatal error message for wrong use of gcry_md_read.
 
    - Disallow symmetric encryption/decryption if key is not set.
 
 
 Noteworthy changes in version 1.7.1 (2016-06-15)  [C21/A1/R1]
 ------------------------------------------------
 
  * Bug fixes:
 
    - Fix ecc_verify for cofactor support.
 
    - Fix portability bug when using gcc with Solaris 9 SPARC.
 
    - Build fix for OpenBSD/amd64
 
    - Add OIDs to the Serpent ciphers.
 
  * Internal changes:
 
    - Use getrandom system call on Linux if available.
 
    - Blinding is now also used for RSA signature creation.
 
    - Changed names of debug envvars
 
 
 Noteworthy changes in version 1.7.0 (2016-04-15)  [C21/A1/R0]
 ------------------------------------------------
 
  * New algorithms and modes:
 
    - SHA3-224, SHA3-256, SHA3-384, SHA3-512, and MD2 hash algorithms.
 
    - SHAKE128 and SHAKE256 extendable-output hash algorithms.
 
    - ChaCha20 stream cipher.
 
    - Poly1305 message authentication algorithm
 
    - ChaCha20-Poly1305 Authenticated Encryption with Associated Data
      mode.
 
    - OCB mode.
 
    - HMAC-MD2 for use by legacy applications.
 
  * New curves for ECC:
 
    - Curve25519.
 
    - sec256k1.
 
    - GOST R 34.10-2001 and GOST R 34.10-2012.
 
  * Performance:
 
    - Improved performance of KDF functions.
 
    - Assembler optimized implementations of Blowfish and Serpent on
      ARM.
 
    - Assembler optimized implementation of 3DES on x86.
 
    - Improved AES using the SSSE3 based vector permutation method by
      Mike Hamburg.
 
    - AVX/BMI is used for SHA-1 and SHA-256 on x86.  This is for SHA-1
      about 20% faster than SSSE3 and more than 100% faster than the
      generic C implementation.
 
    - 40% speedup for SHA-512 and 72% for SHA-1 on ARM Cortex-A8.
 
    - 60-90% speedup for Whirlpool on x86.
 
    - 300% speedup for RIPE MD-160.
 
    - Up to 11 times speedup for CRC functions on x86.
 
  * Other features:
 
    - Improved ECDSA and FIPS 186-4 compliance.
 
    - Support for Montgomery curves.
 
    - gcry_cipher_set_sbox to tweak S-boxes of the gost28147 cipher
      algorithm.
 
    - gcry_mpi_ec_sub to subtract two points on a curve.
 
    - gcry_mpi_ec_decode_point to decode an MPI into a point object.
 
    - Emulation for broken Whirlpool code prior to 1.6.0.  [from 1.6.1]
 
    - Flag "pkcs1-raw" to enable PCKS#1 padding with a user supplied
      hash part.
 
    - Parameter "saltlen" to set a non-default salt length for RSA PSS.
 
    - A SP800-90A conforming DRNG replaces the former X9.31 alternative
      random number generator.
 
    - Map deprecated RSA algo number to the RSA algo number for better
      backward compatibility. [from 1.6.2]
 
    - Use ciphertext blinding for Elgamal decryption [CVE-2014-3591].
      See http://www.cs.tau.ac.il/~tromer/radioexp/ for details.
      [from 1.6.3]
 
    - Fixed data-dependent timing variations in modular exponentiation
      [related to CVE-2015-0837, Last-Level Cache Side-Channel Attacks
       are Practical]. [from 1.6.3]
 
    - Flag "no-keytest" for ECC key generation.  Due to a bug in
      the parser that flag will also be accepted but ignored by older
      version of Libgcrypt. [from 1.6.4]
 
    - Speed up the random number generator by requiring less extra
      seeding. [from 1.6.4]
 
    - Always verify a created RSA signature to avoid private key leaks
      due to hardware failures. [from 1.6.4]
 
    - Mitigate side-channel attack on ECDH with Weierstrass curves
      [CVE-2015-7511].  See http://www.cs.tau.ac.IL/~tromer/ecdh/ for
      details. [from 1.6.5]
 
  * Internal changes:
 
    - Moved locking out to libgpg-error.
 
    - Support of the SYSROOT envvar in the build system.
 
    - Refactor some code.
 
    - The availability of a 64 bit integer type is now mandatory.
 
  * Bug fixes:
 
    - Fixed message digest lookup by OID (regression in 1.6.0).
 
    - Fixed a build problem on NetBSD
 
    - Fixed memory leaks in ECC code.
 
    - Fixed some asm build problems and feature detection bugs.
 
  * Interface changes relative to the 1.6.0 release:
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    gcry_cipher_final               NEW macro.
    GCRY_CIPHER_MODE_CFB8           NEW constant.
    GCRY_CIPHER_MODE_OCB            NEW.
    GCRY_CIPHER_MODE_POLY1305       NEW.
    gcry_cipher_set_sbox            NEW macro.
    gcry_mac_get_algo               NEW.
    GCRY_MAC_HMAC_MD2               NEW.
    GCRY_MAC_HMAC_SHA3_224          NEW.
    GCRY_MAC_HMAC_SHA3_256          NEW.
    GCRY_MAC_HMAC_SHA3_384          NEW.
    GCRY_MAC_HMAC_SHA3_512          NEW.
    GCRY_MAC_POLY1305               NEW.
    GCRY_MAC_POLY1305_AES           NEW.
    GCRY_MAC_POLY1305_CAMELLIA      NEW.
    GCRY_MAC_POLY1305_SEED          NEW.
    GCRY_MAC_POLY1305_SERPENT       NEW.
    GCRY_MAC_POLY1305_TWOFISH       NEW.
    gcry_md_extract                 NEW.
    GCRY_MD_FLAG_BUGEMU1            NEW [from 1.6.1].
    GCRY_MD_GOSTR3411_CP            NEW.
    GCRY_MD_SHA3_224                NEW.
    GCRY_MD_SHA3_256                NEW.
    GCRY_MD_SHA3_384                NEW.
    GCRY_MD_SHA3_512                NEW.
    GCRY_MD_SHAKE128                NEW.
    GCRY_MD_SHAKE256                NEW.
    gcry_mpi_ec_decode_point        NEW.
    gcry_mpi_ec_sub                 NEW.
    GCRY_PK_EDDSA                   NEW constant.
    GCRYCTL_GET_TAGLEN              NEW.
    GCRYCTL_SET_SBOX                NEW.
    GCRYCTL_SET_TAGLEN              NEW.
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 
 Version 1.6.5 (2016-02-09) [C20/A0/R5]
 Version 1.6.4 (2015-09-08) [C20/A0/R4]
 Version 1.6.3 (2015-02-27) [C20/A0/R3]
 Version 1.6.2 (2014-08-21) [C20/A0/R2]
 Version 1.6.1 (2014-01-29) [C20/A0/R1]
 
 
 Noteworthy changes in version 1.6.0 (2013-12-16) [C20/A0/R0]
 ------------------------------------------------
 
  * Removed the long deprecated gcry_ac interface.  Thus Libgcrypt is
    not anymore ABI compatible to previous versions if they used the ac
    interface.
 
  * Removed the module register subsystem.
 
  * The deprecated message digest debug macros have been removed.  Use
    gcry_md_debug instead.
 
  * Removed deprecated control codes.
 
  * Improved performance of most cipher algorithms as well as for the
    SHA family of hash functions.
 
  * Added support for the IDEA cipher algorithm.
 
  * Added support for the Salsa20 and reduced Salsa20/12 stream ciphers.
 
  * Added limited support for the GOST 28147-89 cipher algorithm.
 
  * Added support for the GOST R 34.11-94 and R 34.11-2012 (Stribog)
    hash algorithms.
 
  * Added a random number generator to directly use the system's RNG.
    Also added an interface to prefer the use of a specified RNG.
 
  * Added support for the SCRYPT algorithm.
 
  * Mitigated the Yarom/Falkner flush+reload side-channel attack on RSA
    secret keys.  See <http://eprint.iacr.org/2013/448> [CVE-2013-4242].
 
  * Added support for Deterministic DSA as per RFC-6979.
 
  * Added support for curve Ed25519.
 
  * Added a scatter gather hash convenience function.
 
  * Added several MPI amd SEXP helper functions.
 
  * Added support for negative numbers to gcry_mpi_print,
    gcry_mpi_aprint and gcry_mpi_scan.
 
  * The algorithm ids GCRY_PK_ECDSA and GCRY_PK_ECDH are now
    deprecated.  Use GCRY_PK_ECC if you need an algorithm id.
 
  * Changed gcry_pk_genkey for "ecc" to only include the curve name and
    not the parameters.  The flag "param" may be used to revert this.
 
  * Added a feature to globally disable selected hardware features.
 
  * Added debug helper functions.
 
  * Interface changes relative to the 1.5.0 release:
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  gcry_ac_*               	 REMOVED.
  GCRY_AC_*               	 REMOVED.
  gcry_module_t          	 REMOVED.
  gcry_cipher_register   	 REMOVED.
  gcry_cipher_unregister 	 REMOVED.
  gcry_cipher_list       	 REMOVED.
  gcry_pk_register       	 REMOVED.
  gcry_pk_unregister     	 REMOVED.
  gcry_pk_list           	 REMOVED.
  gcry_md_register       	 REMOVED.
  gcry_md_unregister     	 REMOVED.
  gcry_md_list           	 REMOVED.
  gcry_md_start_debug    	 REMOVED (macro).
  gcry_md_stop_debug     	 REMOVED (macro).
  GCRYCTL_SET_KEY                 REMOVED.
  GCRYCTL_SET_IV                  REMOVED.
  GCRYCTL_SET_CTR                 REMOVED.
  GCRYCTL_DISABLE_ALGO            CHANGED: Not anymore thread-safe.
  gcry_pk_genkey                  CHANGED: ECC curve params not returned.
  gcry_md_hash_buffers            NEW.
  gcry_buffer_t                   NEW.
  GCRYCTL_SET_ENFORCED_FIPS_FLAG  NEW.
  GCRYCTL_SET_PREFERRED_RNG_TYPE  NEW.
  GCRYCTL_GET_CURRENT_RNG_TYPE    NEW.
  GCRYCTL_CLOSE_RANDOM_DEVICE     NEW.
  GCRY_RNG_TYPE_STANDARD          NEW.
  GCRY_RNG_TYPE_FIPS              NEW.
  GCRY_RNG_TYPE_SYSTEM            NEW.
  gcry_mpi_is_neg                 NEW.
  gcry_mpi_neg                    NEW.
  gcry_mpi_abs                    NEW.
  gcry_mpi_snatch                 NEW.
  gcry_mpi_set_opaque_copy        NEW.
  gcry_mpi_point_t                NEW.
  gcry_mpi_point_new              NEW.
  gcry_mpi_point_release          NEW.
  gcry_mpi_point_get              NEW.
  gcry_mpi_point_snatch_get       NEW.
  gcry_mpi_point_set              NEW.
  gcry_mpi_point_snatch_set       NEW.
  gcry_ctx_t                      NEW.
  gcry_ctx_release                NEW.
  gcry_mpi_ec_new                 NEW.
  gcry_mpi_ec_get_mpi             NEW.
  gcry_mpi_ec_get_point           NEW.
  gcry_mpi_ec_set_mpi             NEW.
  gcry_mpi_ec_set_point           NEW.
  gcry_mpi_ec_get_affine          NEW.
  gcry_mpi_ec_dup                 NEW.
  gcry_mpi_ec_add                 NEW.
  gcry_mpi_ec_mul                 NEW.
  gcry_mpi_ec_curve_point         NEW.
  GCRYMPI_FLAG_IMMUTABLE          NEW.
  GCRYMPI_FLAG_CONST              NEW.
  GCRYMPI_FLAG_USER1              NEW.
  GCRYMPI_FLAG_USER2              NEW.
  GCRYMPI_FLAG_USER3              NEW.
  GCRYMPI_FLAG_USER4              NEW.
  GCRYMPI_CONST_ONE               NEW.
  GCRYMPI_CONST_TWO               NEW.
  GCRYMPI_CONST_THREE             NEW.
  GCRYMPI_CONST_FOUR              NEW.
  GCRYMPI_CONST_EIGHT             NEW.
  GCRYMPI_FMT_OPAQUE              NEW.
  GCRYPT_VERSION_NUMBER           NEW.
  GCRY_KDF_SCRYPT                 NEW.
  gcry_pubkey_get_sexp            NEW.
  GCRYCTL_DISABLE_LOCKED_SECMEM   NEW.
  GCRYCTL_DISABLE_PRIV_DROP       NEW.
  GCRY_CIPHER_SALSA20             NEW.
  gcry_sexp_nth_buffer            NEW.
  gcry_sexp_extract_param         NEW.
  GCRY_CIPHER_SALSA20R12          NEW.
  GCRY_CIPHER_GOST28147           NEW.
  GCRY_MD_GOSTR3411_94            NEW.
  GCRY_MD_STRIBOG256              NEW.
  GCRY_MD_STRIBOG512              NEW.
  GCRY_PK_ECC                     NEW.
  gcry_log_debug                  NEW.
  gcry_log_debughex               NEW.
  gcry_log_debugmpi               NEW.
  gcry_log_debugpnt               NEW.
 
 
 Noteworthy changes in version 1.5.0 (2011-06-29)
 ------------------------------------------------
 
  * New function gcry_kdf_derive implementing OpenPGP S2K algorithms
    and PBKDF2.
 
  * Support for WindowsCE.
 
  * Support for ECDH.
 
  * Support for OAEP and PSS methods as described by RFC-3447.
 
  * Fixed PKCS v1.5 code to always return the leading zero.
 
  * New format specifiers "%M" and "%u" for gcry_sexp_build.
 
  * Support opaque MPIs with "%m" and "%M" in gcry_sexp_build.
 
  * New functions gcry_pk_get_curve and gcry_pk_get_param to map ECC
    parameters to a curve name and to retrieve parameter values.
 
  * gcry_mpi_cmp applied to opaque values has a defined semantic now.
 
  * Uses the Intel AES-NI instructions if available.
 
  * The use of the deprecated Alternative Public Key Interface
    (gcry_ac_*) will now print compile time warnings.
 
  * The module register subsystem has been deprecated.  This subsystem
    is not flexible enough and would always require ABI changes to
    extend the internal interfaces.  It will eventually be removed.
    Please contact us on the gcrypt-devel mailing list to discuss
    whether you really need this feature or how it can be replaced by
    an internal plugin mechanism.
 
  * CTR mode may now be used with data chunks of arbitrary length.
 
  * Changes also done in 1.4.6 (2010-07-13):
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
  * New variants of the TIGER algorithm.
 
  * New cipher algorithm mode for AES-WRAP.
 
  * Changes also done in 1.4.5 (2009-12-11):
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
  * Fixed minor memory leak in DSA key generation.
 
  * No more switching to FIPS mode if /proc/version is not readable.
 
  * Fixed sigill during Padlock detection on old CPUs.
 
  * Fixed a hang on some W2000 machines.
 
  * Boosted SHA-512 performance by 30% on ia32 boxes and gcc 4.3;
    SHA-256 went up by 25%.
 
  * Interface changes relative to the 1.4.6 release:
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  GCRY_PK_ECDH               NEW.
  gcry_pk_get_curve          NEW.
  gcry_pk_get_param          NEW.
  GCRYCTL_DISABLE_HWF        NEW.
  gcry_kdf_derive            NEW.
  gcry_pk_encrypt            EXTENDED: Support OAEP.
  gcry_pk_decrypt            EXTENDED: Support OAEP.
  gcry_pk_sign               EXTENDED: Support PSS.
  gcry_pk_verify             EXTENDED: Support PSS.
  gcry_sexp_build            EXTENDED: Add format specifiers M and u.
 
  * Interface changes relative to the 1.4.2 release:
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  GCRY_CIPHER_MODE_AESWRAP   NEW.
  GCRY_MD_TIGER1             NEW.
  GCRY_MD_TIGER2             NEW.
 
 
 Noteworthy changes in version 1.4.4 (2009-01-22)
 ------------------------------------------------
 
  * Publish GCRY_MODULE_ID_USER and GCRY_MODULE_ID_USER_LAST constants.
    This functionality has been in Libgcrypt since 1.3.0.
 
  * MD5 may now be used in non-enforced fips mode.
 
  * Fixed HMAC for SHA-384 and SHA-512 with keys longer than 64 bytes.
 
  * In fips mode, RSA keys are now generated using the X9.31 algorithm
    and DSA keys using the FIPS 186-2 algorithm.
 
  * The transient-key flag is now also supported for DSA key
    generation.  DSA domain parameters may be given as well.
 
 
 Noteworthy changes in version 1.4.3 (2008-09-18)
 ------------------------------------------------
 
  * Try to auto-initialize Libgcrypt to minimize the effect of
    applications not doing that correctly.  This is not a perfect
    solution but given that many applicationion would totally fail
    without such a hack, we try to help at least with the most common
    cases.  Folks, please read the manual to learn how to properly
    initialize Libgcrypt!
 
  * Auto-initialize the secure memory to 32k instead of aborting the
    process.
 
  * Log fatal errors via syslog.
 
  * Changed the name and the semantics of the fips mode config file.
 
  * Add convenience macro gcry_fips_mode_active.
 
  * More self-tests.
 
  * Documentation cleanups.
 
 
 Noteworthy changes in version 1.4.2 (2008-09-08)
 ------------------------------------------------
 
  * The long missing gcry_mpi_lshift function has been added.
 
  * RSA key generation now supports a "transient-key" flag.
 
  * The keygrip computation for ECDSA has been implemented thus ECDSA
    is now fully supported.
 
  * A few macros have been replaced by functions for better type
    checking.
 
  * The thread initialization structure now carries version
    information.
 
  * The manual describes more clearly how to initialize Libgcrypt.
 
  * The library may now be switched into a FIPS mode.
 
  * Interface changes relative to the 1.3.0 release:
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  GCRYCTL_OPERATIONAL_P   NEW.
  GCRYCTL_FIPS_MODE_P     NEW.
  GCRYCTL_FORCE_FIPS_MODE NEW.
  gcry_cipher_setkey      NEW: Replaces macro.
  gcry_cipher_setiv       NEW: Replaces macro.
  gcry_cipher_setctr      NEW: Replaces macro.
  gcry_mpi_lshift         NEW.
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 
 Noteworthy changes in version 1.4.1 (2008-04-25)
 ------------------------------------------------
 
  * Fixed a bug introduced by 1.3.1 which led to the comsumption of far
    too much entropy for the intial seeding.
 
  * Improved AES performance for CFB and CBC modes.
 
  * Removed build problems for the Padlock support.
 
 
 Noteworthy changes in version 1.4.0 (2007-12-10)
 ------------------------------------------------
 
  * New configure option --disable-padlock-support which is mostly
    useful in case of build problems.
 
 
 Noteworthy changes in version 1.3.2 (2007-12-03)
 ------------------------------------------------
 
  * The visibility attribute is now used if supported by the toolchain.
 
  * The ACE engine of VIA processors is now used for AES-128.
 
  * The ASN.1 DER template for SHA-224 has been fixed.
 
 
 Noteworthy changes in version 1.3.1 (2007-10-26)
 ------------------------------------------------
 
  * The entire library is now under the LGPL. The helper programs and
    the manual are under the GPL.  Kudos to Peter Gutmann for giving
    permissions to relicense the rndw32 and rndunix modules.
 
  * The Camellia cipher is now under the LGPL and included by default.
 
  * Fixed a bug in the detection of symbol prefixes which inhibited the
    build of optimzied assembler code on certain systems.
 
  * Updated the entropy gatherer for W32.
 
 
 Noteworthy changes in version 1.3.0 (2007-05-04)
 ------------------------------------------------
 
  * Changed the way the RNG gets initialized. This allows to keep it
    uninitialized as long as no random numbers are used.  To override
    this, the new macro gcry_fast_random_poll may be used.  It is in
    general a good idea to spread this macro into the application code
    to make sure that these polls happen often enough.
 
  * Made the RNG immune against fork without exec.
 
  * Reading and writing the random seed file is now protected by a
    fcntl style file lock on systems that provide this function.
 
  * Support for SHA-224 and HMAC using SHA-384 and SHA-512.
 
  * Support for the SEED cipher.
 
  * Support for the Camellia cipher.  Note that Camellia is disabled by
    default, and that enabling it changes the license of libgcrypt from
    LGPL to GPL.
 
  * Support for OFB encryption mode.
 
  * gcry_mpi_rshift does not anymore truncate the shift count.
 
  * Reserved algorithm ranges for use by applications.
 
  * Support for DSA2.
 
  * The new function gcry_md_debug should be used instead of the
    gcry_md_start_debug and gcry_md_stop_debug macros.
 
  * New configure option --enable-random-daemon to support a system
    wide random daemon.  The daemon code is experimental and not yet
    very well working.  It will eventually allow to keep a global
    random pool for the sake of short living processes.
 
  * Non executable stack support is now used by default on systems
    supporting it.
 
  * Support for Microsoft Windows.
 
  * Assembler support for the AMD64 architecture.
 
  * New configure option --enable-mpi-path for optimized builds.
 
  * Experimental support for ECDSA; should only be used for testing.
 
  * New control code GCRYCTL_PRINT_CONFIG to print the build
    configuration.
 
  * Minor changes to some function declarations.  Buffer arguments are
    now typed as void pointer.  This should not affect any compilation.
    Fixed two bugs in return values and clarified documentation.
 
  * Interface changes relative to the 1.2.0 release:
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  gcry_fast_random_poll	 NEW
  gcry_md_debug           NEW
  gcry_sexp_nth_string    NEW
  GCRY_MD_SHA224          NEW
  GCRY_PK_USAGE_CERT      NEW
  GCRY_PK_USAGE_AUTH      NEW
  GCRY_PK_USAGE_UNKN      NEW
  GCRY_PK_ECDSA           NEW
  GCRY_CIPHER_SEED        NEW
  GCRY_CIPHER_CAMELLIA128 NEW
  GCRY_CIPHER_CAMELLIA192 NEW
  GCRY_CIPHER_CAMELLIA256 NEW
  GCRYCTL_FAKED_RANDOM_P  NEW
  GCRYCTL_PRINT_CONFIG    NEW
  GCRYCTL_SET_RNDEGD_SOCKET  NEW.
  gcry_mpi_scan           CHANGED: Argument BUFFER is now void*.
  gcry_pk_algo_name       CHANGED: Returns "?" instead of NULL.
  gcry_cipher_algo_name   CHANGED: Returns "?" instead of "".
  gcry_pk_spec_t          CHANGED: Element ALIASES is now const ptr.
  gcry_md_write_t         CHANGED: Argument BUF is now a const void*.
  gcry_md_ctl             CHANGED: Argument BUFFER is now void*.
  gcry_cipher_encrypt     CHANGED: Arguments IN and OUT are now void*.
  gcry_cipher_decrypt     CHANGED: Arguments IN and OUT are now void*.
  gcry_sexp_sprint        CHANGED: Argument BUFFER is now void*.
  gcry_create_nonce       CHANGED: Argument BUFFER is now void*.
  gcry_randomize          CHANGED: Argument BUFFER is now void*.
  gcry_cipher_register    CHANGED: Argument ALGORITHM_ID is now int*.
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 
 Noteworthy changes in version 1.2.0 (2004-04-15)
 ------------------------------------------------
 
  * First stable release.
 
 
 Noteworthy changes in version 1.1.94 (2004-03-29)
 -------------------------------------------------
 
  * The support for multi-threaded users goes into its third
    incarnation.  We removed compile time support for thread libraries.
    To support the thread library of your choice, you have to set up
    callback handlers at initialization time.  New data structures, a
    new control command, and default initializers are provided for this
    purpose.
 
  * Interface changes relative to the 1.1.93 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 libgcrypt-config --thread	OBSOLETE
 libgcrypt-pth.la		REMOVED
 libgcrypt-pthread.la		REMOVED
 GCRYCTL_SET_THREAD_CBS		NEW
 struct gcrypt_thread_cbs	NEW
 enum gcry_thread_option		NEW
 GCRY_THREAD_OPTION_PTH_IMPL	NEW
 GCRY_THREAD_OPTION_PTHREAD_IMPL	NEW
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Noteworthy changes in version 1.1.93 (2004-03-06)
 -------------------------------------------------
 
  * The automatic thread library detection has finally been removed.
    From now on, only linking explicitely to libgcrypt, libgcrypt-pth
    or libgcrypt-pthread is supported.
 
 Noteworthy changes in version 1.1.92 (2004-02-20)
 -------------------------------------------------
 
  * Minor bug fixes.
 
  * Included a limited implementation of RFC2268.
 
  * Changed API of the gcry_ac_ functions.  Only a very few programs
    should be affected by this.
 
  * Interface changes relative to the 1.1.91 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 GCRY_CIPHER_RFC2268_40          NEW.
 gcry_ac_data_set                CHANGED: New argument FLAGS.
 gcry_ac_data_get_name           CHANGED: New argument FLAGS.
 gcry_ac_data_get_index          CHANGED: New argument FLAGS.
 gcry_ac_key_pair_generate       CHANGED: New and reordered arguments.
 gcry_ac_key_test                CHANGED: New argument HANDLE.
 gcry_ac_key_get_nbits           CHANGED: New argument HANDLE.
 gcry_ac_key_get_grip            CHANGED: New argument HANDLE.
 gcry_ac_data_search             REMOVED.
 gcry_ac_data_add                REMOVED.
 GCRY_AC_DATA_FLAG_NO_BLINDING   REMOVED.
 GCRY_AC_FLAG_NO_BLINDING        NEW: Replaces above.
 
 
 Noteworthy changes in version 1.1.91 (2003-12-19)
 -------------------------------------------------
 
  * Code cleanups and minor bug fixes.
 
 
 Noteworthy changes in version 1.1.90 (2003-11-14)
 -------------------------------------------------
 
  * The use of the GCRY_WEAK_RANDOM level is now deprecated in favor of
    the new gcry_create_nonce function.
 
  * gcry_sexp_build now supports a "%b" format to include a memory buffer.
 
  * Minor configuration fixes.
 
  * Interface changes relative to the 1.1.44 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 gcry_create_nonce               NEW
 gcry_sexp_build                 ENHANCED
 
 
 Noteworthy changes in version 1.1.44 (2003-10-31)
 -------------------------------------------------
 
  * Bug fixes and more code cleanups.
 
  * Enhanced the prime API.
 
  * Interface changes relative to the 1.1.43 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 gcry_prime_group_generator      NEW
 gcry_prime_release_factors      NEW
 
 
 Noteworthy changes in version 1.1.43 (2003-09-04)
 -------------------------------------------------
 
  * Bug fixes and internal code cleanups.
 
  * Support for the Serpent cipher algorithm.
 
  * Interface changes relative to the 1.1.42 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 gcry_prime_generate             NEW
 gcry_prime_check                NEW
 
 
 Noteworthy changes in version 1.1.42 (2003-07-31)
 -------------------------------------------------
 
  * Major API cleanup.  Applications need to be converted to the new
    API.  See README.apichanges for hints on how to do that.  Backward
    compatibility is provided where it was possible without too much
    effort and did not collide with the overall sanitization effort.
    However, this is only for ease of transition.  NO DEPRECATED
    FUNCTION OR DATA TYPE IS CONSIDERED A PART OF THE API OR ABI AND
    WILL BE DROPPED IN THE FUTURE WITHOUT CHANGING THE SONAME OF THE
    LIBRARY.
 
  * If gcrypt.h is included in sources compiled by GCC 3.1 or later,
    deprecated attributes will warn about use of obsolete functions and
    type definitions.  You can suppress these warnings by passing
    -Wno-deprecated-declarations to the gcc command.
 
  * gcry_check_version must be called from now on to initialize the
    library, it is not longer optional.
 
  * Removed `libgcrypt errno' concept.
 
  * Libgcrypt depends on libgpg-error, a library that provides error
    codes and according functions for all GnuPG components.  Functions
    that used to return error codes asa `int' have been changed to
    return a code of type `gcry_error_t'.  All GCRYERR_* error symbols
    have been removed, since they are now contained in libgpg-error
    (GPG_ERR_*). All functions and types in libgpg-error have also been
    wrapped in Libgcrypt. The new types are gcry_err_code_t and
    gcry_err_source_t.  The new functions are gcry_err_code,
    gcry_err_source, gcry_error, gcry_err_make, gcry_error_from_errno,
    gcry_err_make_from_errno, gcry_err_code_from_errno,
    gcry_err_code_to_errno, gcry_strsource.
 
  * New function gcry_mpi_dump to help in debugging.
 
  * Added alternative interface for asymmetric cryptography.
 
  * CRC-32, CRC-32 a'la RFC 1510, CRC-24 a'la RFC 2440 are now
    supported.
 
  * SHA-256, SHA-384 and SHA-512 are now supported.
 
  * 128 bit Twofish is now supported.
 
  * The random module won't print the "not enough random bytes
    available" anymore.  A new progress status is issued instead.
 
  * CBC-MAC for block ciphers is now supported, by using a
    GCRY_CIPHER_CBC_MAC cipher flag.
 
  * CTR mode for block ciphers is now supported.
 
  * The public RSA exponent can now be specified in key generation.
 
  * RSA blinding is now supported and is used automatically for RSA
    decryption.  It can be explicitely disabled by using the
    `no-blinding' symbol in the `flags' S-Expression or by using the
    GCRY_AC_FLAG_DATA_NO_BLINDING flag when using the ac interface.
 
  * gcry_sexp_canon_len does not use a `historically encoded' error
    code anymore.
 
 
  * Interface changes relative to the 1.1.12 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 GCRY_MPI			DEPRECATED; Use: gcry_mpi_t
 GcryMPI				DEPRECATED; Use: gcry_mpi_t
 GCRY_SEXP			DEPRECATED; Use: gcry_sexp_t
 GcrySexp			DEPRECATED; Use: gcry_sexp_t
 GCRY_CIPHER_HD			DEPRECATED; Use: gcry_cipher_hd_t
 GcryCipherHd			DEPRECATED; Use: gcry_cipher_hd_t
 GCRY_MD_HD			DEPRECATED; Use: gcry_md_hd_t
 GcryMDHd			DEPRECATED; Use: gcry_md_hd_t
 gcry_error_t			NEW
 gcry_err_code_t			NEW
 gcry_err_source_t		NEW
 gcry_err_make			NEW
 gcry_error			NEW
 gcry_err_code			NEW
 gcry_err_source			NEW
 gcry_err_code_from_errno	NEW
 gcry_err_code_to_errno		NEW
 gcry_err_make_from_errno	NEW
 gcry_error_from_errno		NEW
 gcry_strsource			NEW
 GCRYERR_{some error code}	REMOVED; Use GPG_ERR_*
                                          from libgpg-error instead.
 gcry_errno                      REMOVED
 gcry_sexp_canon_len		CHANGED
 gcry_sexp_build_array		NEW
 gcry_mpi_scan			CHANGED: New argument to separate in/out args.
 gcry_mpi_print			CHANGED: Ditto.
 gcry_mpi_dump			NEW
 gcry_cipher_open		CHANGED
 gcry_cipher_reset		NEW
 gcry_cipher_register		NEW
 gcry_cipher_unregister		NEW
 gcry_cipher_list		NEW
 gcry_cipher_algo_keylen		REPLACED macro with function.
 gcry_cipher_algo_blklen		REPLACED macro with function.
 gcry_pk_register		NEW
 gcry_pk_unregister		NEW
 gcry_pk_list			NEW
 gcry_pk_decrypt			ENHANCED: Allows flag to return
                                           complete S-expression.
 gcry_md_open			CHANGED
 gcry_md_copy			CHANGED
 gcry_md_is_enabled		NEW
 gcry_md_is_secure		NEW
 gcry_md_register		NEW
 gcry_md_unregister		NEW
 gcry_md_list			NEW
 gcry_ac_data_t			NEW
 gcry_ac_key_t			NEW
 gcry_ac_key_pair_t		NEW
 gcry_ac_handle_t		NEW
 gcry_ac_key_spec_rsa_t		NEW
 gcry_ac_data_new		NEW
 gcry_ac_data_destroy		NEW
 gcry_ac_data_set		NEW
 gcry_ac_data_copy		NEW
 gcry_ac_data_length		NEW
 gcry_ac_data_get_name		NEW
 gcry_ac_data_get_index		NEW
 gcry_ac_data_clear		NEW
 gcry_ac_open			NEW
 gcry_ac_close			NEW
 gcry_ac_key_init		NEW
 gcry_ac_key_pair_generate	NEW
 gcry_ac_key_pair_extract	NEW
 gcry_ac_key_data_get		NEW
 gcry_ac_key_test		NEW
 gcry_ac_key_get_nbits		NEW
 gcry_ac_key_get_grip		NEW
 gcry_ac_key_destroy		NEW
 gcry_ac_key_pair_destroy	NEW
 gcry_ac_data_encrypt		NEW
 gcry_ac_data_decrypt		NEW
 gcry_ac_data_sign		NEW
 gcry_ac_data_verify		NEW
 gcry_ac_id_to_name		NEW
 gcry_ac_name_to_id		NEW
 gcry_handler_progress_t		NEW
 gcry_handler_alloc_t		NEW
 gcry_handler_secure_check_t	NEW
 gcry_handle_realloc_t		NEW
 gcry_handler_free_t		NEW
 gcry_handler_no_mem_t		NEW
 gcry_handler_error_t		NEW
 gcry_handler_log_t		NEW
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Noteworthy changes in version 1.1.12 (2003-01-20)
 -------------------------------------------------
 
  * gcry_pk_sign, gcry_pk_verify and gcry_pk_encrypt can now handle an
    optional pkcs1 flags parameter in the S-expression.  A similar flag
    may be passed to gcry_pk_decrypt but it is only syntactically
    implemented.
 
  * New convenience macro gcry_md_get_asnoid.
 
  * There is now some real stuff in the manual.
 
 
 Noteworthy changes in version 1.1.11 (2002-12-21)
 -------------------------------------------------
 
  * Don't export internal symbols anymore (currently only for GNU systems)
 
  * New algorithm: MD4
 
  * Implemented ciphertext stealing.
 
  * Smaller bugs fixes and a few new OIDs.
 
  * Interface changes relative to the 1.1.8 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 gcry_cipher_cts                   NEW
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 
 Noteworthy changes in version 1.1.10 (2002-09-20)
 -------------------------------------------------
 
  * Fixed shared library builds for i386, PPC and Sparc.
 
  * Added simple benchmark tool.
 
  * Replaced the internal mutexes by code which automatically adapts to
    the used threading library.  Currently Pth and Pthread are
    supported.  For non-ELF systems the GNU toolchain is now required..
 
  * Added untested support to build Windows DLLs.
 
 Noteworthy changes in version 1.1.9 (2002-08-23)
 ------------------------------------------------
 
  * Support for plain old DES.
 
 
 Noteworthy changes in version 1.1.8 (2002-06-25)
 ------------------------------------------------
 
  * Minor cleanups and exported a few new functions.
 
  * Interface changes relative to the 1.1.7 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 gcry_mpi_div                      NEW
 gcry_mpi_mod                      NEW
 gcry_mpi_invm                     NEW
 gcry_mpi_swap                     NEW
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Noteworthy changes in version 1.1.7 (2002-05-21)
 ------------------------------------------------
 
 * Libgcrypt is now distributed under the terms of the GNU Lesser
   General Public License; see the README file for details.
 
 * It is possible to use libgcrypt w/o intialized secure memory.
 
 * Libgcrypt should now be thread safe after the initialization.
   gcry_control (GCRYCRL_INITIALIZATION_FINISHED,NULL,0) should have
   been called before creating additional threads.
 
  * Interface changes relative to the 1.1.6 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 GCRYCTL_DISABLE_INTERNAL_LOCKING  NEW
 GCRYCTL_DISABLE_SECMEM            NEW
 GCRYCTL_INITIALIZATION_FINISHED   NEW
 GCRYCTL_INITIALIZATION_FINISHED_P NEW
 GCRYCTL_ANY_INITIALIZATION_P      NEW
 gcry_strdup                       NEW
 gcry_sexp_create                  NEW
 gcry_sexp_new                     NEW
 gcry_set_progress_handler         NEW
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Noteworthy changes in version 1.1.6 (2002-02-07)
 ------------------------------------------------
 
   * Enhanced the S-expression conversion functions.
 
 Noteworthy changes in version 1.1.5 (2001-12-18)
 ------------------------------------------------
 
   * gcry_{cipher,md}_map_name are now able to map stringified object IDs.
 
   * New functions gcry_sexp_canon_len and gcry_cipher_mode_from_oid.
 
   * Closed some memory leaks.
 
 
 Noteworthy changes in version 1.1.4 (2001-08-03)
 ------------------------------------------------
 
   * Arcfour does now work.
 
   * Some minor fixes.
 
   * Added a first test program
 
   * Migrated to autoconf 2.52.
 
 
 Noteworthy changes in version 1.1.3 (2001-05-31)
 ------------------------------------------------
 
   * First release of Libgcrypt which is a result of splitting GnuPG
     into into libgcrypt and GnuPG.
 
 
 Copyright 2001, 2002, 2003, 2004, 2007, 2008,
           2009, 2011 Free Software Foundation, Inc.
 Copyright 2013 g10 Code GmbH
 
 This file is free software; as a special exception the author gives
 unlimited permission to copy and/or distribute it, with or without
 modifications, as long as this notice is preserved.
 
 This file is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
 implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
diff --git a/configure.ac b/configure.ac
index 62d4d89b..e6104d5e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,3257 +1,3257 @@
 # Configure.ac script for Libgcrypt
 # Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006,
 #               2007, 2008, 2009, 2011 Free Software Foundation, Inc.
 # Copyright (C) 2012-2021  g10 Code GmbH
 #
 # This file is part of Libgcrypt.
 #
 # Libgcrypt is free software; you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as
 # published by the Free Software Foundation; either version 2.1 of
 # the License, or (at your option) any later version.
 #
 # Libgcrypt is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU Lesser General Public License for more details.
 #
 # You should have received a copy of the GNU Lesser General Public
 # License along with this program; if not, see <http://www.gnu.org/licenses/>.
 
 # (Process this file with autoconf to produce a configure script.)
 AC_REVISION($Revision$)
 AC_PREREQ([2.60])
 min_automake_version="1.14"
 
 # To build a release you need to create a tag with the version number
 # (git tag -s libgcrypt-n.m.k) and run "./autogen.sh --force".  Please
 # bump the version number immediately after the release and do another
 # commit and push so that the git magic is able to work.  See below
 # for the LT versions.
 m4_define([mym4_package],[libgcrypt])
 m4_define([mym4_major], [1])
 m4_define([mym4_minor], [9])
 m4_define([mym4_micro], [2])
 
 # Below is m4 magic to extract and compute the git revision number,
 # the decimalized short revision number, a beta version string and a
 # flag indicating a development version (mym4_isbeta).  Note that the
 # m4 processing is done by autoconf and not during the configure run.
 m4_define([mym4_verslist], m4_split(m4_esyscmd([./autogen.sh --find-version] \
                            mym4_package mym4_major mym4_minor mym4_micro),[:]))
 m4_define([mym4_isbeta],       m4_argn(2, mym4_verslist))
 m4_define([mym4_version],      m4_argn(4, mym4_verslist))
 m4_define([mym4_revision],     m4_argn(7, mym4_verslist))
 m4_define([mym4_revision_dec], m4_argn(8, mym4_verslist))
 m4_esyscmd([echo ]mym4_version[>VERSION])
 AC_INIT([mym4_package],[mym4_version],[https://bugs.gnupg.org])
 
 # LT Version numbers, remember to change them just *before* a release.
 #   (Code changed:			REVISION++)
 #   (Interfaces added/removed/changed:	CURRENT++, REVISION=0)
 #   (Interfaces added:			AGE++)
 #   (Interfaces removed:		AGE=0)
 #
 #   (Interfaces removed:    CURRENT++, AGE=0, REVISION=0)
 #   (Interfaces added:      CURRENT++, AGE++, REVISION=0)
 #   (No interfaces changed:                   REVISION++)
 LIBGCRYPT_LT_CURRENT=23
 LIBGCRYPT_LT_AGE=3
-LIBGCRYPT_LT_REVISION=1
+LIBGCRYPT_LT_REVISION=2
 ################################################
 
 AC_SUBST(LIBGCRYPT_LT_CURRENT)
 AC_SUBST(LIBGCRYPT_LT_AGE)
 AC_SUBST(LIBGCRYPT_LT_REVISION)
 
 # If the API is changed in an incompatible way: increment the next counter.
 #
 # 1.6: ABI and API change but the change is to most users irrelevant
 #      and thus the API version number has not been incremented.
 LIBGCRYPT_CONFIG_API_VERSION=1
 
 # If you change the required gpg-error version, please remove
 # unnecessary error code defines in src/gcrypt-int.h.
 NEED_GPG_ERROR_VERSION=1.27
 
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_SRCDIR([src/libgcrypt.vers])
 AM_INIT_AUTOMAKE([serial-tests dist-bzip2])
 AC_CONFIG_HEADER(config.h)
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_LIBOBJ_DIR([compat])
 AC_CANONICAL_HOST
 AM_MAINTAINER_MODE
 AM_SILENT_RULES
 
 AC_ARG_VAR(SYSROOT,[locate config scripts also below that directory])
 
 AH_TOP([
 #ifndef _GCRYPT_CONFIG_H_INCLUDED
 #define _GCRYPT_CONFIG_H_INCLUDED
 
 /* Enable gpg-error's strerror macro for W32CE.  */
 #define GPG_ERR_ENABLE_ERRNO_MACROS 1
 ])
 
 AH_BOTTOM([
 #define _GCRYPT_IN_LIBGCRYPT 1
 
 /* Add .note.gnu.property section for Intel CET in assembler sources
    when CET is enabled.  */
 #if defined(__ASSEMBLER__) && defined(__CET__)
 # include <cet.h>
 #endif
 
 /* If the configure check for endianness has been disabled, get it from
    OS macros.  This is intended for making fat binary builds on OS X.  */
 #ifdef DISABLED_ENDIAN_CHECK
 # if defined(__BIG_ENDIAN__)
 #  define WORDS_BIGENDIAN 1
 # elif defined(__LITTLE_ENDIAN__)
 #  undef WORDS_BIGENDIAN
 # else
 #  error "No endianness found"
 # endif
 #endif /*DISABLED_ENDIAN_CHECK*/
 
 /* We basically use the original Camellia source.  Make sure the symbols
    properly prefixed.  */
 #define CAMELLIA_EXT_SYM_PREFIX _gcry_
 
 #endif /*_GCRYPT_CONFIG_H_INCLUDED*/
 ])
 
 AH_VERBATIM([_REENTRANT],
 [/* To allow the use of Libgcrypt in multithreaded programs we have to use
     special features from the library. */
 #ifndef _REENTRANT
 # define _REENTRANT 1
 #endif
 ])
 
 
 ######################
 ##  Basic checks.  ### (we need some results later on (e.g. $GCC)
 ######################
 
 AC_PROG_MAKE_SET
 missing_dir=`cd $ac_aux_dir && pwd`
 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
 # AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
 AC_PROG_CC
 AC_PROG_CPP
 AM_PROG_CC_C_O
 AM_PROG_AS
 AC_SEARCH_LIBS([strerror],[cposix])
 AC_PROG_INSTALL
 AC_PROG_AWK
 
 AC_USE_SYSTEM_EXTENSIONS
 
 # Taken from mpfr-4.0.1, then modified for LDADD_FOR_TESTS_KLUDGE
 dnl Under Linux, make sure that the old dtags are used if LD_LIBRARY_PATH
 dnl is defined. The issue is that with the new dtags, LD_LIBRARY_PATH has
 dnl the precedence over the run path, so that if a compatible MPFR library
 dnl is installed in some directory from $LD_LIBRARY_PATH, then the tested
 dnl MPFR library will be this library instead of the MPFR library from the
 dnl build tree. Other OS with the same issue might be added later.
 dnl
 dnl References:
 dnl   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=859732
 dnl   http://lists.gnu.org/archive/html/libtool/2017-05/msg00000.html
 dnl
 dnl We need to check whether --disable-new-dtags is supported as alternate
 dnl linkers may be used (e.g., with tcc: CC=tcc LD=tcc).
 dnl
 case $host in
   *-*-linux*)
     if test -n "$LD_LIBRARY_PATH"; then
       saved_LDFLAGS="$LDFLAGS"
       LDADD_FOR_TESTS_KLUDGE="-Wl,--disable-new-dtags"
       LDFLAGS="$LDFLAGS $LDADD_FOR_TESTS_KLUDGE"
       AC_MSG_CHECKING(whether --disable-new-dtags is supported by the linker)
       AC_LINK_IFELSE([AC_LANG_SOURCE([[
 int main (void) { return 0; }
       ]])],
       [AC_MSG_RESULT(yes (use it since LD_LIBRARY_PATH is set))],
       [AC_MSG_RESULT(no)
        LDADD_FOR_TESTS_KLUDGE=""
       ])
       LDFLAGS="$saved_LDFLAGS"
     fi
     ;;
 esac
 AC_SUBST([LDADD_FOR_TESTS_KLUDGE])
 
 VERSION_NUMBER=m4_esyscmd(printf "0x%02x%02x%02x" mym4_major \
                           mym4_minor mym4_micro)
 AC_SUBST(VERSION_NUMBER)
 
 # We need to compile and run a program on the build machine.
 AX_CC_FOR_BUILD
 
 
 LT_PREREQ([2.2.6])
 LT_INIT([win32-dll disable-static])
 LT_LANG([Windows Resource])
 
 
 ##########################
 ## General definitions. ##
 ##########################
 
 # Used by libgcrypt-config
 LIBGCRYPT_CONFIG_LIBS="-lgcrypt"
 LIBGCRYPT_CONFIG_CFLAGS=""
 LIBGCRYPT_CONFIG_HOST="$host"
 
 # Definitions for symmetric ciphers.
 available_ciphers="arcfour blowfish cast5 des aes twofish serpent rfc2268 seed"
 available_ciphers="$available_ciphers camellia idea salsa20 gost28147 chacha20"
 available_ciphers="$available_ciphers sm4"
 enabled_ciphers=""
 
 # Definitions for public-key ciphers.
 available_pubkey_ciphers="dsa elgamal rsa ecc"
 enabled_pubkey_ciphers=""
 
 # Definitions for message digests.
 available_digests="crc gostr3411-94 md2 md4 md5 rmd160 sha1 sha256 sha512"
 available_digests="$available_digests sha3 tiger whirlpool stribog blake2"
 available_digests="$available_digests sm3"
 enabled_digests=""
 
 # Definitions for kdfs (optional ones)
 available_kdfs="s2k pkdf2 scrypt"
 enabled_kdfs=""
 
 # Definitions for random modules.
 available_random_modules="linux egd unix"
 auto_random_modules="$available_random_modules"
 
 # Supported thread backends.
 LIBGCRYPT_THREAD_MODULES=""
 
 # Other definitions.
 have_w32_system=no
 have_w32ce_system=no
 have_pthread=no
 
 
 # Setup some stuff depending on host.
 case "${host}" in
     *-*-mingw32*)
       ac_cv_have_dev_random=no
       have_w32_system=yes
       case "${host}" in
         *-mingw32ce*)
             have_w32ce_system=yes
             available_random_modules="w32ce"
             ;;
         *)
             available_random_modules="w32"
             ;;
       esac
       AC_DEFINE(USE_ONLY_8DOT3,1,
                 [set this to limit filenames to the 8.3 format])
       AC_DEFINE(HAVE_DRIVE_LETTERS,1,
                 [defined if we must run on a stupid file system])
       AC_DEFINE(HAVE_DOSISH_SYSTEM,1,
                 [defined if we run on some of the PCDOS like systems
                  (DOS, Windoze. OS/2) with special properties like
                   no file modes])
       ;;
 
     i?86-emx-os2 | i?86-*-os2*emx)
         # OS/2 with the EMX environment
         ac_cv_have_dev_random=no
         AC_DEFINE(HAVE_DRIVE_LETTERS)
         AC_DEFINE(HAVE_DOSISH_SYSTEM)
         ;;
 
     i?86-*-msdosdjgpp*)
         # DOS with the DJGPP environment
         ac_cv_have_dev_random=no
         AC_DEFINE(HAVE_DRIVE_LETTERS)
         AC_DEFINE(HAVE_DOSISH_SYSTEM)
         ;;
 
     *-*-hpux*)
         if test -z "$GCC" ; then
             CFLAGS="$CFLAGS -Ae -D_HPUX_SOURCE"
         fi
         ;;
     *-dec-osf4*)
         if test -z "$GCC" ; then
             # Suppress all warnings
             # to get rid of the unsigned/signed char mismatch warnings.
             CFLAGS="$CFLAGS -w"
         fi
         ;;
     m68k-atari-mint)
         ;;
     *-apple-darwin*)
         AC_DEFINE(_DARWIN_C_SOURCE, 900000L,
                   Expose all libc features (__DARWIN_C_FULL).)
         AC_DEFINE(USE_POSIX_SPAWN_FOR_TESTS, 1,
                   [defined if we use posix_spawn in test program])
         AC_CHECK_HEADERS(spawn.h)
         ;;
     *)
       ;;
 esac
 
 if test "$have_w32_system" = yes; then
    AC_DEFINE(HAVE_W32_SYSTEM,1, [Defined if we run on a W32 API based system])
    if test "$have_w32ce_system" = yes; then
      AC_DEFINE(HAVE_W32CE_SYSTEM,1,[Defined if we run on WindowsCE])
    fi
 fi
 AM_CONDITIONAL(HAVE_W32_SYSTEM, test "$have_w32_system" = yes)
 AM_CONDITIONAL(HAVE_W32CE_SYSTEM, test "$have_w32ce_system" = yes)
 
 
 
 # A printable OS Name is sometimes useful.
 case "${host}" in
     *-*-mingw32ce*)
         PRINTABLE_OS_NAME="W32CE"
         ;;
 
     *-*-mingw32*)
         PRINTABLE_OS_NAME="W32"
         ;;
 
     i?86-emx-os2 | i?86-*-os2*emx )
         PRINTABLE_OS_NAME="OS/2"
         ;;
 
     i?86-*-msdosdjgpp*)
         PRINTABLE_OS_NAME="MSDOS/DJGPP"
         ;;
 
     *-linux*)
         PRINTABLE_OS_NAME="GNU/Linux"
         ;;
 
     *)
         PRINTABLE_OS_NAME=`uname -s || echo "Unknown"`
         ;;
 esac
 
 NAME_OF_DEV_RANDOM="/dev/random"
 NAME_OF_DEV_URANDOM="/dev/urandom"
 
 AC_ARG_ENABLE(endian-check,
               AS_HELP_STRING([--disable-endian-check],
               [disable the endian check and trust the OS provided macros]),
 	      endiancheck=$enableval,endiancheck=yes)
 if test x"$endiancheck" = xyes ; then
   AC_C_BIGENDIAN
 else
   AC_DEFINE(DISABLED_ENDIAN_CHECK,1,[configure did not test for endianness])
 fi
 
 AC_CHECK_SIZEOF(unsigned short, 2)
 AC_CHECK_SIZEOF(unsigned int, 4)
 AC_CHECK_SIZEOF(unsigned long, 4)
 AC_CHECK_SIZEOF(unsigned long long, 0)
 AC_CHECK_SIZEOF(void *, 0)
 
 AC_TYPE_UINTPTR_T
 
 if test "$ac_cv_sizeof_unsigned_short" = "0" \
    || test "$ac_cv_sizeof_unsigned_int" = "0" \
    || test "$ac_cv_sizeof_unsigned_long" = "0"; then
     AC_MSG_WARN([Hmmm, something is wrong with the sizes - using defaults]);
 fi
 
 # Ensure that we have UINT64_C before we bother to check for uint64_t
 AC_CACHE_CHECK([for UINT64_C],[gnupg_cv_uint64_c_works],
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <inttypes.h>]],
        [[uint64_t foo=UINT64_C(42);]])],
      gnupg_cv_uint64_c_works=yes,gnupg_cv_uint64_c_works=no))
 if test "$gnupg_cv_uint64_c_works" = "yes" ; then
    AC_CHECK_SIZEOF(uint64_t)
 fi
 
 # Do we have any 64-bit data types?
 if test "$ac_cv_sizeof_unsigned_int" != "8" \
    && test "$ac_cv_sizeof_unsigned_long" != "8" \
    && test "$ac_cv_sizeof_unsigned_long_long" != "8" \
    && test "$ac_cv_sizeof_uint64_t" != "8"; then
     AC_MSG_ERROR([[
 ***
 *** No 64-bit integer type available.
 *** It is not possible to build Libgcrypt on this platform.
 ***]])
 fi
 
 
 # If not specified otherwise, all available algorithms will be
 # included.
 default_ciphers="$available_ciphers"
 default_pubkey_ciphers="$available_pubkey_ciphers"
 default_digests="$available_digests"
 default_kdfs="$available_kdfs"
 # Blacklist MD2 by default
 default_digests=`echo $default_digests | sed -e 's/md2//g'`
 
 # Substitutions to set generated files in a Emacs buffer to read-only.
 AC_SUBST(emacs_local_vars_begin, ['Local Variables:'])
 AC_SUBST(emacs_local_vars_read_only, ['buffer-read-only: t'])
 AC_SUBST(emacs_local_vars_end, ['End:'])
 
 ############################
 ## Command line switches. ##
 ############################
 
 # Implementation of the --enable-ciphers switch.
 AC_ARG_ENABLE(ciphers,
 	      AS_HELP_STRING([--enable-ciphers=ciphers],
                              [select the symmetric ciphers to include]),
 	      [enabled_ciphers=`echo $enableval | tr ',:' '  ' | tr '[A-Z]' '[a-z]'`],
 	      [enabled_ciphers=""])
 if test "x$enabled_ciphers" = "x" \
    -o "$enabled_ciphers" = "yes"  \
    -o "$enabled_ciphers" = "no"; then
    enabled_ciphers=$default_ciphers
 fi
 AC_MSG_CHECKING([which symmetric ciphers to include])
 for cipher in $enabled_ciphers; do
     LIST_MEMBER($cipher, $available_ciphers)
     if test "$found" = "0"; then
        AC_MSG_ERROR([unsupported cipher "$cipher" specified])
     fi
 done
 AC_MSG_RESULT([$enabled_ciphers])
 
 # Implementation of the --enable-pubkey-ciphers switch.
 AC_ARG_ENABLE(pubkey-ciphers,
 	      AS_HELP_STRING([--enable-pubkey-ciphers=ciphers],
                              [select the public-key ciphers to include]),
 	      [enabled_pubkey_ciphers=`echo $enableval | tr ',:' '  ' | tr '[A-Z]' '[a-z]'`],
 	      [enabled_pubkey_ciphers=""])
 if test "x$enabled_pubkey_ciphers" = "x" \
    -o "$enabled_pubkey_ciphers" = "yes"  \
    -o "$enabled_pubkey_ciphers" = "no"; then
    enabled_pubkey_ciphers=$default_pubkey_ciphers
 fi
 AC_MSG_CHECKING([which public-key ciphers to include])
 for cipher in $enabled_pubkey_ciphers; do
     LIST_MEMBER($cipher, $available_pubkey_ciphers)
     if test "$found" = "0"; then
        AC_MSG_ERROR([unsupported public-key cipher specified])
     fi
 done
 AC_MSG_RESULT([$enabled_pubkey_ciphers])
 
 # Implementation of the --enable-digests switch.
 AC_ARG_ENABLE(digests,
 	      AS_HELP_STRING([--enable-digests=digests],
                              [select the message digests to include]),
 	      [enabled_digests=`echo $enableval | tr ',:' '  ' | tr '[A-Z]' '[a-z]'`],
 	      [enabled_digests=""])
 if test "x$enabled_digests" = "x" \
    -o "$enabled_digests" = "yes"  \
    -o "$enabled_digests" = "no"; then
    enabled_digests=$default_digests
 fi
 AC_MSG_CHECKING([which message digests to include])
 for digest in $enabled_digests; do
     LIST_MEMBER($digest, $available_digests)
     if test "$found" = "0"; then
        AC_MSG_ERROR([unsupported message digest specified])
     fi
 done
 AC_MSG_RESULT([$enabled_digests])
 
 # Implementation of the --enable-kdfs switch.
 AC_ARG_ENABLE(kdfs,
       AS_HELP_STRING([--enable-kfds=kdfs],
                      [select the KDFs to include]),
       [enabled_kdfs=`echo $enableval | tr ',:' '  ' | tr '[A-Z]' '[a-z]'`],
       [enabled_kdfs=""])
 if test "x$enabled_kdfs" = "x" \
    -o "$enabled_kdfs" = "yes"  \
    -o "$enabled_kdfs" = "no"; then
    enabled_kdfs=$default_kdfs
 fi
 AC_MSG_CHECKING([which key derivation functions to include])
 for kdf in $enabled_kdfs; do
     LIST_MEMBER($kdf, $available_kdfs)
     if test "$found" = "0"; then
        AC_MSG_ERROR([unsupported key derivation function specified])
     fi
 done
 AC_MSG_RESULT([$enabled_kdfs])
 
 # Implementation of the --enable-random switch.
 AC_ARG_ENABLE(random,
 	      AS_HELP_STRING([--enable-random=name],
                              [select which random number generator to use]),
 	      [random=`echo $enableval | tr '[A-Z]' '[a-z]'`],
 	      [])
 if test "x$random" = "x" -o "$random" = "yes" -o "$random" = "no"; then
     random=default
 fi
 AC_MSG_CHECKING([which random module to use])
 if test "$random" != "default" -a "$random" != "auto"; then
     LIST_MEMBER($random, $available_random_modules)
     if test "$found" = "0"; then
        AC_MSG_ERROR([unsupported random module specified])
     fi
 fi
 AC_MSG_RESULT($random)
 
 # Implementation of the --disable-dev-random switch.
 AC_MSG_CHECKING([whether use of /dev/random is requested])
 AC_ARG_ENABLE(dev-random,
 [  --disable-dev-random    disable the use of dev random],
     try_dev_random=$enableval, try_dev_random=yes)
 AC_MSG_RESULT($try_dev_random)
 
 # Implementation of the --with-egd-socket switch.
 AC_ARG_WITH(egd-socket,
     [  --with-egd-socket=NAME  Use NAME for the EGD socket)],
             egd_socket_name="$withval", egd_socket_name="" )
 AC_DEFINE_UNQUOTED(EGD_SOCKET_NAME, "$egd_socket_name",
                    [Define if you don't want the default EGD socket name.
                     For details see cipher/rndegd.c])
 
 # Implementation of the --enable-random-daemon
 AC_MSG_CHECKING([whether the experimental random daemon is requested])
 AC_ARG_ENABLE([random-daemon],
               AS_HELP_STRING([--enable-random-daemon],
                              [Build and support the experimental gcryptrnd]),
               [use_random_daemon=$enableval],
               [use_random_daemon=no])
 AC_MSG_RESULT($use_random_daemon)
 if test x$use_random_daemon = xyes ; then
     AC_DEFINE(USE_RANDOM_DAEMON,1,
               [Define to support the experimental random daemon])
 fi
 AM_CONDITIONAL(USE_RANDOM_DAEMON, test x$use_random_daemon = xyes)
 
 
 # Implementation of --disable-asm.
 AC_MSG_CHECKING([whether MPI and cipher assembler modules are requested])
 AC_ARG_ENABLE([asm],
               AS_HELP_STRING([--disable-asm],
                              [Disable MPI and cipher assembler modules]),
               [try_asm_modules=$enableval],
               [try_asm_modules=yes])
 AC_MSG_RESULT($try_asm_modules)
 
 # Implementation of the --enable-m-guard switch.
 AC_MSG_CHECKING([whether memory guard is requested])
 AC_ARG_ENABLE(m-guard,
               AS_HELP_STRING([--enable-m-guard],
                              [Enable memory guard facility]),
               [use_m_guard=$enableval], [use_m_guard=no])
 AC_MSG_RESULT($use_m_guard)
 if test "$use_m_guard" = yes ; then
     AC_DEFINE(M_GUARD,1,[Define to use the (obsolete) malloc guarding feature])
 fi
 
 # Implementation of the --enable-large-data-tests switch.
 AC_MSG_CHECKING([whether to run large data tests])
 AC_ARG_ENABLE(large-data-tests,
               AS_HELP_STRING([--enable-large-data-tests],
                  [Enable the real long ruinning large data tests]),
 	      large_data_tests=$enableval,large_data_tests=no)
 AC_MSG_RESULT($large_data_tests)
 AC_SUBST(RUN_LARGE_DATA_TESTS, $large_data_tests)
 
 # Implementation of --enable-force-soft-hwfeatures
 AC_MSG_CHECKING([whether 'soft' HW feature bits are forced on])
 AC_ARG_ENABLE([force-soft-hwfeatures],
               AS_HELP_STRING([--enable-force-soft-hwfeatures],
                              [Enable forcing 'soft' HW feature bits on]),
               [force_soft_hwfeatures=$enableval],
               [force_soft_hwfeatures=no])
 AC_MSG_RESULT($force_soft_hwfeatures)
 
 
 # Implementation of the --with-capabilities switch.
 # Check whether we want to use Linux capabilities
 AC_MSG_CHECKING([whether use of capabilities is requested])
 AC_ARG_WITH(capabilities,
             AS_HELP_STRING([--with-capabilities],
                            [Use linux capabilities [default=no]]),
             [use_capabilities="$withval"],[use_capabilities=no])
 AC_MSG_RESULT($use_capabilities)
 
 # Implementation of the --enable-hmac-binary-check.
 AC_MSG_CHECKING([whether a HMAC binary check is requested])
 AC_ARG_ENABLE(hmac-binary-check,
               AS_HELP_STRING([--enable-hmac-binary-check],
                              [Enable library integrity check]),
               [use_hmac_binary_check=$enableval],
               [use_hmac_binary_check=no])
 AC_MSG_RESULT($use_hmac_binary_check)
 if test "$use_hmac_binary_check" = yes ; then
     AC_DEFINE(ENABLE_HMAC_BINARY_CHECK,1,
               [Define to support an HMAC based integrity check])
 fi
 
 
 # Implementation of the --disable-jent-support switch.
 AC_MSG_CHECKING([whether jitter entropy support is requested])
 AC_ARG_ENABLE(jent-support,
               AS_HELP_STRING([--disable-jent-support],
                         [Disable support for the Jitter entropy collector]),
 	      jentsupport=$enableval,jentsupport=yes)
 AC_MSG_RESULT($jentsupport)
 
 # Implementation of the --disable-padlock-support switch.
 AC_MSG_CHECKING([whether padlock support is requested])
 AC_ARG_ENABLE(padlock-support,
               AS_HELP_STRING([--disable-padlock-support],
                         [Disable support for the PadLock Engine of VIA processors]),
 	      padlocksupport=$enableval,padlocksupport=yes)
 AC_MSG_RESULT($padlocksupport)
 
 # Implementation of the --disable-aesni-support switch.
 AC_MSG_CHECKING([whether AESNI support is requested])
 AC_ARG_ENABLE(aesni-support,
               AS_HELP_STRING([--disable-aesni-support],
                  [Disable support for the Intel AES-NI instructions]),
 	      aesnisupport=$enableval,aesnisupport=yes)
 AC_MSG_RESULT($aesnisupport)
 
 # Implementation of the --disable-shaext-support switch.
 AC_MSG_CHECKING([whether SHAEXT support is requested])
 AC_ARG_ENABLE(shaext-support,
               AS_HELP_STRING([--disable-shaext-support],
                  [Disable support for the Intel SHAEXT instructions]),
               shaextsupport=$enableval,shaextsupport=yes)
 AC_MSG_RESULT($shaextsupport)
 
 # Implementation of the --disable-pclmul-support switch.
 AC_MSG_CHECKING([whether PCLMUL support is requested])
 AC_ARG_ENABLE(pclmul-support,
               AS_HELP_STRING([--disable-pclmul-support],
                  [Disable support for the Intel PCLMUL instructions]),
 	      pclmulsupport=$enableval,pclmulsupport=yes)
 AC_MSG_RESULT($pclmulsupport)
 
 # Implementation of the --disable-sse41-support switch.
 AC_MSG_CHECKING([whether SSE4.1 support is requested])
 AC_ARG_ENABLE(sse41-support,
               AS_HELP_STRING([--disable-sse41-support],
                  [Disable support for the Intel SSE4.1 instructions]),
 	      sse41support=$enableval,sse41support=yes)
 AC_MSG_RESULT($sse41support)
 
 # Implementation of the --disable-drng-support switch.
 AC_MSG_CHECKING([whether DRNG support is requested])
 AC_ARG_ENABLE(drng-support,
               AS_HELP_STRING([--disable-drng-support],
                  [Disable support for the Intel DRNG (RDRAND instruction)]),
 	      drngsupport=$enableval,drngsupport=yes)
 AC_MSG_RESULT($drngsupport)
 
 # Implementation of the --disable-avx-support switch.
 AC_MSG_CHECKING([whether AVX support is requested])
 AC_ARG_ENABLE(avx-support,
               AS_HELP_STRING([--disable-avx-support],
                  [Disable support for the Intel AVX instructions]),
 	      avxsupport=$enableval,avxsupport=yes)
 AC_MSG_RESULT($avxsupport)
 
 # Implementation of the --disable-avx2-support switch.
 AC_MSG_CHECKING([whether AVX2 support is requested])
 AC_ARG_ENABLE(avx2-support,
               AS_HELP_STRING([--disable-avx2-support],
                  [Disable support for the Intel AVX2 instructions]),
 	      avx2support=$enableval,avx2support=yes)
 AC_MSG_RESULT($avx2support)
 
 # Implementation of the --disable-neon-support switch.
 AC_MSG_CHECKING([whether NEON support is requested])
 AC_ARG_ENABLE(neon-support,
               AS_HELP_STRING([--disable-neon-support],
                  [Disable support for the ARM NEON instructions]),
 	      neonsupport=$enableval,neonsupport=yes)
 AC_MSG_RESULT($neonsupport)
 
 # Implementation of the --disable-arm-crypto-support switch.
 AC_MSG_CHECKING([whether ARMv8 Crypto Extension support is requested])
 AC_ARG_ENABLE(arm-crypto-support,
               AS_HELP_STRING([--disable-arm-crypto-support],
                  [Disable support for the ARMv8 Crypto Extension instructions]),
 	      armcryptosupport=$enableval,armcryptosupport=yes)
 AC_MSG_RESULT($armcryptosupport)
 
 # Implementation of the --disable-ppc-crypto-support switch.
 AC_MSG_CHECKING([whether PPC crypto support is requested])
 AC_ARG_ENABLE(ppc-crypto-support,
               AS_HELP_STRING([--disable-ppc-crypto-support],
                  [Disable support for the PPC crypto instructions introduced in POWER 8 (PowerISA 2.07)]),
               ppccryptosupport=$enableval,ppccryptosupport=yes)
 AC_MSG_RESULT($ppccryptosupport)
 
 # Implementation of the --disable-O-flag-munging switch.
 AC_MSG_CHECKING([whether a -O flag munging is requested])
 AC_ARG_ENABLE([O-flag-munging],
               AS_HELP_STRING([--disable-O-flag-munging],
                  [Disable modification of the cc -O flag]),
               [enable_o_flag_munging=$enableval],
               [enable_o_flag_munging=yes])
 AC_MSG_RESULT($enable_o_flag_munging)
 AM_CONDITIONAL(ENABLE_O_FLAG_MUNGING, test "$enable_o_flag_munging" = "yes")
 
 # Implementation of the --disable-instrumentation-munging switch.
 AC_MSG_CHECKING([whether a instrumentation (-fprofile, -fsanitize) munging is requested])
 AC_ARG_ENABLE([instrumentation-munging],
               AS_HELP_STRING([--disable-instrumentation-munging],
                  [Disable modification of the cc instrumentation options]),
               [enable_instrumentation_munging=$enableval],
               [enable_instrumentation_munging=yes])
 AC_MSG_RESULT($enable_instrumentation_munging)
 AM_CONDITIONAL(ENABLE_INSTRUMENTATION_MUNGING,
 	       test "$enable_instrumentation_munging" = "yes")
 
 # Implementation of the --disable-amd64-as-feature-detection switch.
 AC_MSG_CHECKING([whether to enable AMD64 as(1) feature detection])
 AC_ARG_ENABLE(amd64-as-feature-detection,
               AS_HELP_STRING([--disable-amd64-as-feature-detection],
                  [Disable the auto-detection of AMD64 as(1) features]),
 	      amd64_as_feature_detection=$enableval,
               amd64_as_feature_detection=yes)
 AC_MSG_RESULT($amd64_as_feature_detection)
 
 
 AC_DEFINE_UNQUOTED(PRINTABLE_OS_NAME, "$PRINTABLE_OS_NAME",
                    [A human readable text with the name of the OS])
 
 # For some systems we know that we have ld_version scripts.
 # Use it then as default.
 have_ld_version_script=no
 case "${host}" in
     *-*-linux*)
 	have_ld_version_script=yes
         ;;
     *-*-gnu*)
 	have_ld_version_script=yes
         ;;
 esac
 AC_ARG_ENABLE([ld-version-script],
               AS_HELP_STRING([--enable-ld-version-script],
                              [enable/disable use of linker version script.
                               (default is system dependent)]),
               [have_ld_version_script=$enableval],
               [ : ] )
 AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
 
 AC_DEFINE_UNQUOTED(NAME_OF_DEV_RANDOM, "$NAME_OF_DEV_RANDOM",
                    [defined to the name of the strong random device])
 AC_DEFINE_UNQUOTED(NAME_OF_DEV_URANDOM, "$NAME_OF_DEV_URANDOM",
                    [defined to the name of the weaker random device])
 
 
 ###############################
 #### Checks for libraries. ####
 ###############################
 
 #
 # gpg-error is required.
 #
 AM_PATH_GPG_ERROR("$NEED_GPG_ERROR_VERSION")
 if test "x$GPG_ERROR_LIBS" = "x"; then
   AC_MSG_ERROR([libgpg-error is needed.
                 See ftp://ftp.gnupg.org/gcrypt/libgpg-error/ .])
 fi
 
 AC_DEFINE(GPG_ERR_SOURCE_DEFAULT, GPG_ERR_SOURCE_GCRYPT,
           [The default error source for libgcrypt.])
 
 #
 # Check whether the GNU Pth library is available.  We require this
 # to build the optional gcryptrnd program.
 #
 AC_ARG_WITH(pth-prefix,
             AS_HELP_STRING([--with-pth-prefix=PFX],
                            [prefix where GNU Pth is installed (optional)]),
      pth_config_prefix="$withval", pth_config_prefix="")
 if test x$pth_config_prefix != x ; then
    PTH_CONFIG="$pth_config_prefix/bin/pth-config"
 fi
 if test "$use_random_daemon" = "yes"; then
   AC_PATH_PROG(PTH_CONFIG, pth-config, no)
   if test "$PTH_CONFIG" = "no"; then
     AC_MSG_WARN([[
 ***
 *** To build the Libgcrypt's random number daemon
 *** we need the support of the GNU Portable Threads Library.
 *** Download it from ftp://ftp.gnu.org/gnu/pth/
 *** On a Debian GNU/Linux system you might want to try
 ***   apt-get install libpth-dev
 ***]])
   else
     GNUPG_PTH_VERSION_CHECK([1.3.7])
     if test $have_pth = yes; then
        PTH_CFLAGS=`$PTH_CONFIG --cflags`
        PTH_LIBS=`$PTH_CONFIG --ldflags`
        PTH_LIBS="$PTH_LIBS `$PTH_CONFIG --libs --all`"
        AC_DEFINE(USE_GNU_PTH, 1,
                 [Defined if the GNU Portable Thread Library should be used])
        AC_DEFINE(HAVE_PTH, 1,
                 [Defined if the GNU Pth is available])
     fi
   fi
 fi
 AC_SUBST(PTH_CFLAGS)
 AC_SUBST(PTH_LIBS)
 
 #
 # Check whether pthreads is available
 #
 if test "$have_w32_system" != yes; then
   AC_CHECK_LIB(pthread,pthread_create,have_pthread=yes)
   if test "$have_pthread" = yes; then
     AC_DEFINE(HAVE_PTHREAD, 1 ,[Define if we have pthread.])
   fi
 fi
 
 
 # Solaris needs -lsocket and -lnsl. Unisys system includes
 # gethostbyname in libsocket but needs libnsl for socket.
 AC_SEARCH_LIBS(setsockopt, [socket], ,
 	[AC_SEARCH_LIBS(setsockopt, [socket], , , [-lnsl])])
 AC_SEARCH_LIBS(setsockopt, [nsl])
 
 ##################################
 #### Checks for header files. ####
 ##################################
 
 AC_HEADER_STDC
 AC_CHECK_HEADERS(unistd.h sys/select.h sys/msg.h sys/auxv.h)
 INSERT_SYS_SELECT_H=
 if test x"$ac_cv_header_sys_select_h" = xyes; then
   INSERT_SYS_SELECT_H=" include <sys/select.h>"
 fi
 AC_SUBST(INSERT_SYS_SELECT_H)
 
 
 ##########################################
 #### Checks for typedefs, structures, ####
 ####  and compiler characteristics.   ####
 ##########################################
 
 AC_C_CONST
 AC_C_INLINE
 AC_TYPE_SIZE_T
 AC_TYPE_PID_T
 
 AC_CHECK_TYPES([byte, ushort, u16, u32, u64])
 
 gl_TYPE_SOCKLEN_T
 case "${host}" in
   *-*-mingw32*)
     # socklen_t may or may not be defined depending on what headers
     # are included.  To be safe we use int as this is the actual type.
     FALLBACK_SOCKLEN_T="typedef int gcry_socklen_t;"
     ;;
   *)
     if test ".$gl_cv_socklen_t_equiv" = "."; then
       FALLBACK_SOCKLEN_T="typedef socklen_t gcry_socklen_t;"
     else
       FALLBACK_SOCKLEN_T="typedef ${gl_cv_socklen_t_equiv} gcry_socklen_t;"
     fi
 esac
 AC_SUBST(FALLBACK_SOCKLEN_T)
 
 
 #
 # Check for __builtin_bswap32 intrinsic.
 #
 AC_CACHE_CHECK(for __builtin_bswap32,
        [gcry_cv_have_builtin_bswap32],
        [gcry_cv_have_builtin_bswap32=no
         AC_LINK_IFELSE([AC_LANG_PROGRAM([],
           [int x = 0; int y = __builtin_bswap32(x); return y;])],
           [gcry_cv_have_builtin_bswap32=yes])])
 if test "$gcry_cv_have_builtin_bswap32" = "yes" ; then
    AC_DEFINE(HAVE_BUILTIN_BSWAP32,1,
              [Defined if compiler has '__builtin_bswap32' intrinsic])
 fi
 
 
 #
 # Check for __builtin_bswap64 intrinsic.
 #
 AC_CACHE_CHECK(for __builtin_bswap64,
        [gcry_cv_have_builtin_bswap64],
        [gcry_cv_have_builtin_bswap64=no
         AC_LINK_IFELSE([AC_LANG_PROGRAM([],
           [long long x = 0; long long y = __builtin_bswap64(x); return y;])],
           [gcry_cv_have_builtin_bswap64=yes])])
 if test "$gcry_cv_have_builtin_bswap64" = "yes" ; then
    AC_DEFINE(HAVE_BUILTIN_BSWAP64,1,
              [Defined if compiler has '__builtin_bswap64' intrinsic])
 fi
 
 
 #
 # Check for __builtin_ctz intrinsic.
 #
 AC_CACHE_CHECK(for __builtin_ctz,
        [gcry_cv_have_builtin_ctz],
        [gcry_cv_have_builtin_ctz=no
         AC_LINK_IFELSE([AC_LANG_PROGRAM([],
           [unsigned int x = 0; int y = __builtin_ctz(x); return y;])],
           [gcry_cv_have_builtin_ctz=yes])])
 if test "$gcry_cv_have_builtin_ctz" = "yes" ; then
    AC_DEFINE(HAVE_BUILTIN_CTZ, 1,
              [Defined if compiler has '__builtin_ctz' intrinsic])
 fi
 
 
 #
 # Check for __builtin_ctzl intrinsic.
 #
 AC_CACHE_CHECK(for __builtin_ctzl,
        [gcry_cv_have_builtin_ctzl],
        [gcry_cv_have_builtin_ctzl=no
         AC_LINK_IFELSE([AC_LANG_PROGRAM([],
           [unsigned long x = 0; long y = __builtin_ctzl(x); return y;])],
           [gcry_cv_have_builtin_ctzl=yes])])
 if test "$gcry_cv_have_builtin_ctzl" = "yes" ; then
    AC_DEFINE(HAVE_BUILTIN_CTZL, 1,
              [Defined if compiler has '__builtin_ctzl' intrinsic])
 fi
 
 
 #
 # Check for __builtin_clz intrinsic.
 #
 AC_CACHE_CHECK(for __builtin_clz,
        [gcry_cv_have_builtin_clz],
        [gcry_cv_have_builtin_clz=no
         AC_LINK_IFELSE([AC_LANG_PROGRAM([],
           [unsigned int x = 0; int y = __builtin_clz(x); return y;])],
           [gcry_cv_have_builtin_clz=yes])])
 if test "$gcry_cv_have_builtin_clz" = "yes" ; then
    AC_DEFINE(HAVE_BUILTIN_CLZ, 1,
              [Defined if compiler has '__builtin_clz' intrinsic])
 fi
 
 
 #
 # Check for __builtin_clzl intrinsic.
 #
 AC_CACHE_CHECK(for __builtin_clzl,
        [gcry_cv_have_builtin_clzl],
        [gcry_cv_have_builtin_clzl=no
         AC_LINK_IFELSE([AC_LANG_PROGRAM([],
           [unsigned long x = 0; long y = __builtin_clzl(x); return y;])],
           [gcry_cv_have_builtin_clzl=yes])])
 if test "$gcry_cv_have_builtin_clzl" = "yes" ; then
    AC_DEFINE(HAVE_BUILTIN_CLZL, 1,
              [Defined if compiler has '__builtin_clzl' intrinsic])
 fi
 
 
 #
 # Check for __sync_synchronize intrinsic.
 #
 AC_CACHE_CHECK(for __sync_synchronize,
        [gcry_cv_have_sync_synchronize],
        [gcry_cv_have_sync_synchronize=no
         AC_LINK_IFELSE([AC_LANG_PROGRAM([],
           [__sync_synchronize(); return 0;])],
           [gcry_cv_have_sync_synchronize=yes])])
 if test "$gcry_cv_have_sync_synchronize" = "yes" ; then
    AC_DEFINE(HAVE_SYNC_SYNCHRONIZE, 1,
              [Defined if compiler has '__sync_synchronize' intrinsic])
 fi
 
 
 #
 # Check for VLA support (variable length arrays).
 #
 AC_CACHE_CHECK(whether the variable length arrays are supported,
        [gcry_cv_have_vla],
        [gcry_cv_have_vla=no
         AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[void f1(char *, int);
             char foo(int i) {
               char b[(i < 0 ? 0 : i) + 1];
               f1(b, sizeof b); return b[0];}]])],
           [gcry_cv_have_vla=yes])])
 if test "$gcry_cv_have_vla" = "yes" ; then
    AC_DEFINE(HAVE_VLA,1, [Defined if variable length arrays are supported])
 fi
 
 
 #
 # Check for ELF visibility support.
 #
 AC_CACHE_CHECK(whether the visibility attribute is supported,
        gcry_cv_visibility_attribute,
        [gcry_cv_visibility_attribute=no
         AC_LANG_CONFTEST([AC_LANG_SOURCE(
           [[int foo __attribute__ ((visibility ("hidden"))) = 1;
             int bar __attribute__ ((visibility ("protected"))) = 1;
           ]])])
 
         if ${CC-cc} -Werror -S conftest.c -o conftest.s \
                   1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD ; then
             if grep '\.hidden.*foo' conftest.s >/dev/null 2>&1 ; then
                 if grep '\.protected.*bar' conftest.s >/dev/null 2>&1; then
                     gcry_cv_visibility_attribute=yes
                 fi
             fi
         fi
        ])
 if test "$gcry_cv_visibility_attribute" = "yes"; then
     AC_CACHE_CHECK(for broken visibility attribute,
        gcry_cv_broken_visibility_attribute,
        [gcry_cv_broken_visibility_attribute=yes
         AC_LANG_CONFTEST([AC_LANG_SOURCE(
           [[int foo (int x);
             int bar (int x) __asm__ ("foo")
                             __attribute__ ((visibility ("hidden")));
             int bar (int x) { return x; }
           ]])])
 
         if ${CC-cc} -Werror -S conftest.c -o conftest.s \
                   1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD ; then
            if grep '\.hidden@<:@ 	_@:>@foo' conftest.s >/dev/null 2>&1;
             then
                gcry_cv_broken_visibility_attribute=no
            fi
         fi
        ])
 fi
 if test "$gcry_cv_visibility_attribute" = "yes"; then
     AC_CACHE_CHECK(for broken alias attribute,
        gcry_cv_broken_alias_attribute,
        [gcry_cv_broken_alias_attribute=yes
         AC_LANG_CONFTEST([AC_LANG_SOURCE(
           [[extern int foo (int x) __asm ("xyzzy");
             int bar (int x) { return x; }
             extern __typeof (bar) foo __attribute ((weak, alias ("bar")));
             extern int dfoo;
             extern __typeof (dfoo) dfoo __asm ("abccb");
             int dfoo = 1;
           ]])])
 
         if ${CC-cc} -Werror -S conftest.c -o conftest.s \
                   1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD ; then
            if grep 'xyzzy' conftest.s >/dev/null 2>&1 && \
               grep 'abccb' conftest.s >/dev/null 2>&1; then
               gcry_cv_broken_alias_attribute=no
            fi
         fi
         ])
 fi
 if test "$gcry_cv_visibility_attribute" = "yes"; then
     AC_CACHE_CHECK(if gcc supports -fvisibility=hidden,
        gcry_cv_gcc_has_f_visibility,
        [gcry_cv_gcc_has_f_visibility=no
         _gcc_cflags_save=$CFLAGS
         CFLAGS="-fvisibility=hidden"
         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
                           gcry_cv_gcc_has_f_visibility=yes)
         CFLAGS=$_gcc_cflags_save;
        ])
 fi
 if test "$gcry_cv_visibility_attribute" = "yes" \
    && test "$gcry_cv_broken_visibility_attribute" != "yes" \
    && test "$gcry_cv_broken_alias_attribute" != "yes" \
    && test "$gcry_cv_gcc_has_f_visibility" = "yes"
  then
    AC_DEFINE(GCRY_USE_VISIBILITY, 1,
                [Define to use the GNU C visibility attribute.])
    CFLAGS="$CFLAGS -fvisibility=hidden"
 fi
 
 
 # Following attribute tests depend on warnings to cause compile to fail,
 # so set -Werror temporarily.
 _gcc_cflags_save=$CFLAGS
 CFLAGS="$CFLAGS -Werror"
 
 
 #
 # Check whether the compiler supports the GCC style aligned attribute
 #
 AC_CACHE_CHECK([whether the GCC style aligned attribute is supported],
        [gcry_cv_gcc_attribute_aligned],
        [gcry_cv_gcc_attribute_aligned=no
         AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[struct { int a; } foo __attribute__ ((aligned (16)));]])],
           [gcry_cv_gcc_attribute_aligned=yes])])
 if test "$gcry_cv_gcc_attribute_aligned" = "yes" ; then
    AC_DEFINE(HAVE_GCC_ATTRIBUTE_ALIGNED,1,
      [Defined if a GCC style "__attribute__ ((aligned (n))" is supported])
 fi
 
 
 #
 # Check whether the compiler supports the GCC style packed attribute
 #
 AC_CACHE_CHECK([whether the GCC style packed attribute is supported],
        [gcry_cv_gcc_attribute_packed],
        [gcry_cv_gcc_attribute_packed=no
         AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[struct foolong_s { long b; } __attribute__ ((packed));
             struct foo_s { char a; struct foolong_s b; }
               __attribute__ ((packed));
             enum bar {
               FOO = 1 / (sizeof(struct foo_s) == (sizeof(char) + sizeof(long))),
             };]])],
           [gcry_cv_gcc_attribute_packed=yes])])
 if test "$gcry_cv_gcc_attribute_packed" = "yes" ; then
    AC_DEFINE(HAVE_GCC_ATTRIBUTE_PACKED,1,
      [Defined if a GCC style "__attribute__ ((packed))" is supported])
 fi
 
 
 #
 # Check whether the compiler supports the GCC style may_alias attribute
 #
 AC_CACHE_CHECK([whether the GCC style may_alias attribute is supported],
        [gcry_cv_gcc_attribute_may_alias],
        [gcry_cv_gcc_attribute_may_alias=no
         AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[typedef struct foo_s { int a; }
             __attribute__ ((may_alias)) foo_t;]])],
           [gcry_cv_gcc_attribute_may_alias=yes])])
 if test "$gcry_cv_gcc_attribute_may_alias" = "yes" ; then
    AC_DEFINE(HAVE_GCC_ATTRIBUTE_MAY_ALIAS,1,
      [Defined if a GCC style "__attribute__ ((may_alias))" is supported])
 fi
 
 
 # Restore flags.
 CFLAGS=$_gcc_cflags_save;
 
 
 #
 # Check whether the compiler supports 'asm' or '__asm__' keyword for
 # assembler blocks.
 #
 AC_CACHE_CHECK([whether 'asm' assembler keyword is supported],
        [gcry_cv_have_asm],
        [gcry_cv_have_asm=no
         AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[void a(void) { asm("":::"memory"); }]])],
           [gcry_cv_have_asm=yes])])
 AC_CACHE_CHECK([whether '__asm__' assembler keyword is supported],
        [gcry_cv_have___asm__],
        [gcry_cv_have___asm__=no
         AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[void a(void) { __asm__("":::"memory"); }]])],
           [gcry_cv_have___asm__=yes])])
 if test "$gcry_cv_have_asm" = "no" ; then
    if test "$gcry_cv_have___asm__" = "yes" ; then
       AC_DEFINE(asm,__asm__,
         [Define to supported assembler block keyword, if plain 'asm' was not
          supported])
    fi
 fi
 
 
 #
 # Check whether the compiler supports inline assembly memory barrier.
 #
 if test "$gcry_cv_have_asm" = "no" ; then
    if test "$gcry_cv_have___asm__" = "yes" ; then
       AC_CACHE_CHECK([whether inline assembly memory barrier is supported],
           [gcry_cv_have_asm_volatile_memory],
           [gcry_cv_have_asm_volatile_memory=no
            AC_COMPILE_IFELSE([AC_LANG_SOURCE(
              [[void a(int x)
                {
                  __asm__ volatile("":::"memory");
                  __asm__ volatile("":"+r"(x)::"memory");
                }]])],
              [gcry_cv_have_asm_volatile_memory=yes])])
    fi
 else
    AC_CACHE_CHECK([whether inline assembly memory barrier is supported],
        [gcry_cv_have_asm_volatile_memory],
        [gcry_cv_have_asm_volatile_memory=no
         AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[void a(int x)
             {
               asm volatile("":::"memory");
               asm volatile("":"+r"(x)::"memory"); }]])],
           [gcry_cv_have_asm_volatile_memory=yes])])
 fi
 if test "$gcry_cv_have_asm_volatile_memory" = "yes" ; then
    AC_DEFINE(HAVE_GCC_ASM_VOLATILE_MEMORY,1,
      [Define if inline asm memory barrier is supported])
 fi
 
 
 #
 # Check whether GCC assembler supports features needed for our ARM
 # implementations.  This needs to be done before setting up the
 # assembler stuff.
 #
 AC_CACHE_CHECK([whether GCC assembler is compatible for ARM assembly implementations],
        [gcry_cv_gcc_arm_platform_as_ok],
        [if test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_arm_platform_as_ok="n/a"
         else
           gcry_cv_gcc_arm_platform_as_ok=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
             [[__asm__(
                 /* Test if assembler supports UAL syntax.  */
                 ".syntax unified\n\t"
                 ".arm\n\t" /* our assembly code is in ARM mode  */
                 ".text\n\t"
                 /* Following causes error if assembler ignored '.syntax unified'.  */
                 "asmfunc:\n\t"
                 "add %r0, %r0, %r4, ror #12;\n\t"
 
                 /* Test if '.type' and '.size' are supported.  */
                 ".size asmfunc,.-asmfunc;\n\t"
                 ".type asmfunc,%function;\n\t"
               );]], [ asmfunc(); ] )],
             [gcry_cv_gcc_arm_platform_as_ok=yes])
         fi])
 if test "$gcry_cv_gcc_arm_platform_as_ok" = "yes" ; then
    AC_DEFINE(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS,1,
      [Defined if underlying assembler is compatible with ARM assembly implementations])
 fi
 
 
 #
 # Check whether GCC assembler supports features needed for our ARMv8/Aarch64
 # implementations.  This needs to be done before setting up the
 # assembler stuff.
 #
 AC_CACHE_CHECK([whether GCC assembler is compatible for ARMv8/Aarch64 assembly implementations],
        [gcry_cv_gcc_aarch64_platform_as_ok],
        [if test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_aarch64_platform_as_ok="n/a"
         else
           gcry_cv_gcc_aarch64_platform_as_ok=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
             [[__asm__(
                 ".text\n\t"
                 "asmfunc:\n\t"
                 "eor x0, x0, x30, ror #12;\n\t"
                 "add x0, x0, x30, asr #12;\n\t"
                 "eor v0.16b, v0.16b, v31.16b;\n\t"
               );]], [ asmfunc(); ] )],
             [gcry_cv_gcc_aarch64_platform_as_ok=yes])
         fi])
 if test "$gcry_cv_gcc_aarch64_platform_as_ok" = "yes" ; then
    AC_DEFINE(HAVE_COMPATIBLE_GCC_AARCH64_PLATFORM_AS,1,
      [Defined if underlying assembler is compatible with ARMv8/Aarch64 assembly implementations])
 fi
 
 #
 # Check whether GCC assembler supports for CFI directives.
 #
 AC_CACHE_CHECK([whether GCC assembler supports for CFI directives],
        [gcry_cv_gcc_asm_cfi_directives],
        [gcry_cv_gcc_asm_cfi_directives=no
         AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(
                 ".text\n\t"
                 "ac_test:\n\t"
                 ".cfi_startproc\n\t"
                 ".cfi_remember_state\n\t"
                 ".cfi_adjust_cfa_offset 8\n\t"
                 ".cfi_rel_offset 0, 8\n\t"
                 ".cfi_def_cfa_register 1\n\t"
                 ".cfi_register 2, 3\n\t"
                 ".cfi_restore 2\n\t"
                 ".cfi_escape 0x0f, 0x02, 0x11, 0x00\n\t"
                 ".cfi_restore_state\n\t"
                 ".long 0\n\t"
                 ".cfi_endproc\n\t"
             );]])],
           [gcry_cv_gcc_asm_cfi_directives=yes])])
 if test "$gcry_cv_gcc_asm_cfi_directives" = "yes" ; then
    AC_DEFINE(HAVE_GCC_ASM_CFI_DIRECTIVES,1,
              [Defined if underlying assembler supports for CFI directives])
 fi
 
 
 #
 # Check whether GCC assembler supports for ELF directives.
 #
 AC_CACHE_CHECK([whether GCC assembler supports for ELF directives],
        [gcry_cv_gcc_asm_elf_directives],
        [gcry_cv_gcc_asm_elf_directives=no
         AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(
                 /* Test if ELF directives '.type' and '.size' are supported. */
                 ".text\n\t"
                 "asmfunc:\n\t"
                 ".size asmfunc,.-asmfunc;\n\t"
                 ".type asmfunc,STT_FUNC;\n\t"
             );]])],
           [gcry_cv_gcc_asm_elf_directives=yes])])
 if test "$gcry_cv_gcc_asm_elf_directives" = "yes" ; then
    AC_DEFINE(HAVE_GCC_ASM_ELF_DIRECTIVES,1,
              [Defined if underlying assembler supports for ELF directives])
 fi
 
 
 #
 # Check whether underscores in symbols are required.  This needs to be
 # done before setting up the assembler stuff.
 #
 GNUPG_SYS_SYMBOL_UNDERSCORE()
 
 
 #################################
 ####                         ####
 #### Setup assembler stuff.  ####
 #### Define mpi_cpu_arch.    ####
 ####                         ####
 #################################
 AC_ARG_ENABLE(mpi-path,
               AS_HELP_STRING([--enable-mpi-path=EXTRA_PATH],
               [prepend EXTRA_PATH to list of CPU specific optimizations]),
 	      mpi_extra_path="$enableval",mpi_extra_path="")
 AC_MSG_CHECKING(architecture and mpi assembler functions)
 if test -f $srcdir/mpi/config.links ; then
     . $srcdir/mpi/config.links
     AC_CONFIG_LINKS("$mpi_ln_list")
     ac_cv_mpi_sflags="$mpi_sflags"
     AC_MSG_RESULT($mpi_cpu_arch)
 else
     AC_MSG_RESULT(failed)
     AC_MSG_ERROR([mpi/config.links missing!])
 fi
 MPI_SFLAGS="$ac_cv_mpi_sflags"
 AC_SUBST(MPI_SFLAGS)
 
 AM_CONDITIONAL(MPI_MOD_ASM_MPIH_ADD1, test "$mpi_mod_asm_mpih_add1" = yes)
 AM_CONDITIONAL(MPI_MOD_ASM_MPIH_SUB1, test "$mpi_mod_asm_mpih_sub1" = yes)
 AM_CONDITIONAL(MPI_MOD_ASM_MPIH_MUL1, test "$mpi_mod_asm_mpih_mul1" = yes)
 AM_CONDITIONAL(MPI_MOD_ASM_MPIH_MUL2, test "$mpi_mod_asm_mpih_mul2" = yes)
 AM_CONDITIONAL(MPI_MOD_ASM_MPIH_MUL3, test "$mpi_mod_asm_mpih_mul3" = yes)
 AM_CONDITIONAL(MPI_MOD_ASM_MPIH_LSHIFT, test "$mpi_mod_asm_mpih_lshift" = yes)
 AM_CONDITIONAL(MPI_MOD_ASM_MPIH_RSHIFT, test "$mpi_mod_asm_mpih_rshift" = yes)
 AM_CONDITIONAL(MPI_MOD_ASM_UDIV, test "$mpi_mod_asm_udiv" = yes)
 AM_CONDITIONAL(MPI_MOD_ASM_UDIV_QRNND, test "$mpi_mod_asm_udiv_qrnnd" = yes)
 AM_CONDITIONAL(MPI_MOD_C_MPIH_ADD1, test "$mpi_mod_c_mpih_add1" = yes)
 AM_CONDITIONAL(MPI_MOD_C_MPIH_SUB1, test "$mpi_mod_c_mpih_sub1" = yes)
 AM_CONDITIONAL(MPI_MOD_C_MPIH_MUL1, test "$mpi_mod_c_mpih_mul1" = yes)
 AM_CONDITIONAL(MPI_MOD_C_MPIH_MUL2, test "$mpi_mod_c_mpih_mul2" = yes)
 AM_CONDITIONAL(MPI_MOD_C_MPIH_MUL3, test "$mpi_mod_c_mpih_mul3" = yes)
 AM_CONDITIONAL(MPI_MOD_C_MPIH_LSHIFT, test "$mpi_mod_c_mpih_lshift" = yes)
 AM_CONDITIONAL(MPI_MOD_C_MPIH_RSHIFT, test "$mpi_mod_c_mpih_rshift" = yes)
 AM_CONDITIONAL(MPI_MOD_C_UDIV, test "$mpi_mod_c_udiv" = yes)
 AM_CONDITIONAL(MPI_MOD_C_UDIV_QRNND, test "$mpi_mod_c_udiv_qrnnd" = yes)
 
 # Reset non applicable feature flags.
 if test "$mpi_cpu_arch" != "x86" ; then
    aesnisupport="n/a"
    shaextsupport="n/a"
    pclmulsupport="n/a"
    sse41support="n/a"
    avxsupport="n/a"
    avx2support="n/a"
    padlocksupport="n/a"
    drngsupport="n/a"
 fi
 
 if test "$mpi_cpu_arch" != "arm" ; then
    if test "$mpi_cpu_arch" != "aarch64" ; then
      neonsupport="n/a"
      armcryptosupport="n/a"
    fi
 fi
 
 if test "$mpi_cpu_arch" != "ppc"; then
    ppccryptosupport="n/a"
 fi
 
 #############################################
 ####                                     ####
 #### Platform specific compiler checks.  ####
 ####                                     ####
 #############################################
 
 
 # Following tests depend on warnings to cause compile to fail, so set -Werror
 # temporarily.
 _gcc_cflags_save=$CFLAGS
 CFLAGS="$CFLAGS -Werror"
 
 
 #
 # Check whether compiler supports 'ms_abi' function attribute.
 #
 AC_CACHE_CHECK([whether compiler supports 'ms_abi' function attribute],
        [gcry_cv_gcc_attribute_ms_abi],
        [gcry_cv_gcc_attribute_ms_abi=no
         AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[int __attribute__ ((ms_abi)) proto(int);]])],
           [gcry_cv_gcc_attribute_ms_abi=yes])])
 if test "$gcry_cv_gcc_attribute_ms_abi" = "yes" ; then
    AC_DEFINE(HAVE_GCC_ATTRIBUTE_MS_ABI,1,
      [Defined if compiler supports "__attribute__ ((ms_abi))" function attribute])
 fi
 
 
 #
 # Check whether compiler supports 'sysv_abi' function attribute.
 #
 AC_CACHE_CHECK([whether compiler supports 'sysv_abi' function attribute],
        [gcry_cv_gcc_attribute_sysv_abi],
        [gcry_cv_gcc_attribute_sysv_abi=no
         AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[int __attribute__ ((sysv_abi)) proto(int);]])],
           [gcry_cv_gcc_attribute_sysv_abi=yes])])
 if test "$gcry_cv_gcc_attribute_sysv_abi" = "yes" ; then
    AC_DEFINE(HAVE_GCC_ATTRIBUTE_SYSV_ABI,1,
      [Defined if compiler supports "__attribute__ ((sysv_abi))" function attribute])
 fi
 
 
 #
 # Check whether default calling convention is 'ms_abi'.
 #
 if test "$gcry_cv_gcc_attribute_ms_abi" = "yes" ; then
    AC_CACHE_CHECK([whether default calling convention is 'ms_abi'],
           [gcry_cv_gcc_default_abi_is_ms_abi],
           [gcry_cv_gcc_default_abi_is_ms_abi=no
            AC_COMPILE_IFELSE([AC_LANG_SOURCE(
              [[void *test(void) {
                  void *(*def_func)(void) = test;
                  void *__attribute__((ms_abi))(*msabi_func)(void);
                  /* warning on SysV abi targets, passes on Windows based targets */
                  msabi_func = def_func;
                  return msabi_func;
              }]])],
              [gcry_cv_gcc_default_abi_is_ms_abi=yes])])
    if test "$gcry_cv_gcc_default_abi_is_ms_abi" = "yes" ; then
       AC_DEFINE(HAVE_GCC_DEFAULT_ABI_IS_MS_ABI,1,
         [Defined if default calling convention is 'ms_abi'])
    fi
 fi
 
 
 #
 # Check whether default calling convention is 'sysv_abi'.
 #
 if test "$gcry_cv_gcc_attribute_sysv_abi" = "yes" ; then
    AC_CACHE_CHECK([whether default calling convention is 'sysv_abi'],
           [gcry_cv_gcc_default_abi_is_sysv_abi],
           [gcry_cv_gcc_default_abi_is_sysv_abi=no
            AC_COMPILE_IFELSE([AC_LANG_SOURCE(
              [[void *test(void) {
                  void *(*def_func)(void) = test;
                  void *__attribute__((sysv_abi))(*sysvabi_func)(void);
                  /* warning on MS ABI targets, passes on SysV ABI targets */
                  sysvabi_func = def_func;
                  return sysvabi_func;
              }]])],
              [gcry_cv_gcc_default_abi_is_sysv_abi=yes])])
    if test "$gcry_cv_gcc_default_abi_is_sysv_abi" = "yes" ; then
       AC_DEFINE(HAVE_GCC_DEFAULT_ABI_IS_SYSV_ABI,1,
         [Defined if default calling convention is 'sysv_abi'])
    fi
 fi
 
 
 # Restore flags.
 CFLAGS=$_gcc_cflags_save;
 
 
 #
 # Check whether GCC inline assembler supports SSSE3 instructions
 # This is required for the AES-NI instructions.
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports SSSE3 instructions],
        [gcry_cv_gcc_inline_asm_ssse3],
        [if test "$mpi_cpu_arch" != "x86" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_ssse3="n/a"
         else
           gcry_cv_gcc_inline_asm_ssse3=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[static unsigned char be_mask[16] __attribute__ ((aligned (16))) =
               { 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 };
             void a(void) {
               __asm__("pshufb %[mask], %%xmm2\n\t"::[mask]"m"(*be_mask):);
             }]], [ a(); ] )],
           [gcry_cv_gcc_inline_asm_ssse3=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_ssse3" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_SSSE3,1,
      [Defined if inline assembler supports SSSE3 instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports PCLMUL instructions.
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports PCLMUL instructions],
        [gcry_cv_gcc_inline_asm_pclmul],
        [if test "$mpi_cpu_arch" != "x86" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_pclmul="n/a"
         else
           gcry_cv_gcc_inline_asm_pclmul=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[void a(void) {
               __asm__("pclmulqdq \$0, %%xmm1, %%xmm3\n\t":::"cc");
             }]], [ a(); ] )],
           [gcry_cv_gcc_inline_asm_pclmul=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_pclmul" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_PCLMUL,1,
      [Defined if inline assembler supports PCLMUL instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports SHA Extensions instructions.
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports SHA Extensions instructions],
        [gcry_cv_gcc_inline_asm_shaext],
        [if test "$mpi_cpu_arch" != "x86" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_shaext="n/a"
         else
           gcry_cv_gcc_inline_asm_shaext=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[void a(void) {
               __asm__("sha1rnds4 \$0, %%xmm1, %%xmm3\n\t":::"cc");
               __asm__("sha1nexte %%xmm1, %%xmm3\n\t":::"cc");
               __asm__("sha1msg1 %%xmm1, %%xmm3\n\t":::"cc");
               __asm__("sha1msg2 %%xmm1, %%xmm3\n\t":::"cc");
               __asm__("sha256rnds2 %%xmm0, %%xmm1, %%xmm3\n\t":::"cc");
               __asm__("sha256msg1 %%xmm1, %%xmm3\n\t":::"cc");
               __asm__("sha256msg2 %%xmm1, %%xmm3\n\t":::"cc");
             }]], [ a(); ] )],
           [gcry_cv_gcc_inline_asm_shaext=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_shaext" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_SHAEXT,1,
      [Defined if inline assembler supports SHA Extensions instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports SSE4.1 instructions.
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports SSE4.1 instructions],
        [gcry_cv_gcc_inline_asm_sse41],
        [if test "$mpi_cpu_arch" != "x86" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_sse41="n/a"
         else
           gcry_cv_gcc_inline_asm_sse41=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[void a(void) {
               int i;
               __asm__("pextrd \$2, %%xmm0, %[out]\n\t" : [out] "=m" (i));
             }]], [ a(); ] )],
           [gcry_cv_gcc_inline_asm_sse41=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_sse41" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_SSE41,1,
      [Defined if inline assembler supports SSE4.1 instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports AVX instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports AVX instructions],
        [gcry_cv_gcc_inline_asm_avx],
        [if test "$mpi_cpu_arch" != "x86" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_avx="n/a"
         else
           gcry_cv_gcc_inline_asm_avx=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[void a(void) {
               __asm__("xgetbv; vaesdeclast (%[mem]),%%xmm0,%%xmm7\n\t"::[mem]"r"(0):);
             }]], [ a(); ] )],
           [gcry_cv_gcc_inline_asm_avx=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_avx" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_AVX,1,
      [Defined if inline assembler supports AVX instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports AVX2 instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports AVX2 instructions],
        [gcry_cv_gcc_inline_asm_avx2],
        [if test "$mpi_cpu_arch" != "x86" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_avx2="n/a"
         else
           gcry_cv_gcc_inline_asm_avx2=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[void a(void) {
               __asm__("xgetbv; vpbroadcastb %%xmm7,%%ymm1\n\t":::"cc");
             }]], [ a(); ] )],
           [gcry_cv_gcc_inline_asm_avx2=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_avx2" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_AVX2,1,
      [Defined if inline assembler supports AVX2 instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports BMI2 instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports BMI2 instructions],
        [gcry_cv_gcc_inline_asm_bmi2],
        [if test "$mpi_cpu_arch" != "x86" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_bmi2="n/a"
         else
           gcry_cv_gcc_inline_asm_bmi2=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[unsigned int a(unsigned int x, unsigned int y) {
               unsigned int tmp1, tmp2;
               asm ("rorxl %2, %1, %0"
                    : "=r" (tmp1)
                    : "rm0" (x), "J" (32 - ((23) & 31)));
               asm ("andnl %2, %1, %0"
                    : "=r" (tmp2)
                    : "r0" (x), "rm" (y));
               return tmp1 + tmp2;
             }]], [ a(1, 2); ] )],
           [gcry_cv_gcc_inline_asm_bmi2=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_bmi2" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_BMI2,1,
      [Defined if inline assembler supports BMI2 instructions])
 fi
 
 
 #
 # Check whether GCC assembler needs "-Wa,--divide" to correctly handle
 # constant division
 #
 if test $amd64_as_feature_detection = yes; then
   AC_CACHE_CHECK([whether GCC assembler handles division correctly],
        [gcry_cv_gcc_as_const_division_ok],
        [gcry_cv_gcc_as_const_division_ok=no
         AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(".text\n\tfn:\n\t xorl \$(123456789/12345678), %ebp;\n\t");]],
             [fn();])],
           [gcry_cv_gcc_as_const_division_ok=yes])])
   if test "$gcry_cv_gcc_as_const_division_ok" = "no" ; then
     #
     # Add '-Wa,--divide' to CPPFLAGS and try check again.
     #
     _gcc_cppflags_save="$CPPFLAGS"
     CPPFLAGS="$CPPFLAGS -Wa,--divide"
     AC_CACHE_CHECK([whether GCC assembler handles division correctly with "-Wa,--divide"],
          [gcry_cv_gcc_as_const_division_with_wadivide_ok],
          [gcry_cv_gcc_as_const_division_with_wadivide_ok=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
             [[__asm__(".text\n\tfn:\n\t xorl \$(123456789/12345678), %ebp;\n\t");]],
               [fn();])],
             [gcry_cv_gcc_as_const_division_with_wadivide_ok=yes])])
     if test "$gcry_cv_gcc_as_const_division_with_wadivide_ok" = "no" ; then
       # '-Wa,--divide' did not work, restore old flags.
       CPPFLAGS="$_gcc_cppflags_save"
     fi
   fi
 fi
 
 
 #
 # Check whether GCC assembler supports features needed for our amd64
 # implementations
 #
 if test $amd64_as_feature_detection = yes; then
   AC_CACHE_CHECK([whether GCC assembler is compatible for amd64 assembly implementations],
        [gcry_cv_gcc_amd64_platform_as_ok],
        [if test "$mpi_cpu_arch" != "x86" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_amd64_platform_as_ok="n/a"
         else
           gcry_cv_gcc_amd64_platform_as_ok=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(
                 /* Test if '.type' and '.size' are supported.  */
                 /* These work only on ELF targets. */
                 ".text\n\t"
 		"asmfunc:\n\t"
                 ".size asmfunc,.-asmfunc;\n\t"
                 ".type asmfunc,@function;\n\t"
 		/* Test if assembler allows use of '/' for constant division
 		 * (Solaris/x86 issue). If previous constant division check
 		 * and "-Wa,--divide" workaround failed, this causes assembly
 		 * to be disable on this machine. */
 		"xorl \$(123456789/12345678), %ebp;\n\t"
             );]], [ asmfunc(); ])],
           [gcry_cv_gcc_amd64_platform_as_ok=yes])
         fi])
   if test "$gcry_cv_gcc_amd64_platform_as_ok" = "yes" ; then
      AC_DEFINE(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS,1,
               [Defined if underlying assembler is compatible with amd64 assembly implementations])
   fi
   if test "$gcry_cv_gcc_amd64_platform_as_ok" = "no" &&
      test "$gcry_cv_gcc_attribute_sysv_abi" = "yes" &&
      test "$gcry_cv_gcc_default_abi_is_ms_abi" = "yes"; then
     AC_CACHE_CHECK([whether GCC assembler is compatible for WIN64 assembly implementations],
       [gcry_cv_gcc_win64_platform_as_ok],
       [gcry_cv_gcc_win64_platform_as_ok=no
       AC_LINK_IFELSE([AC_LANG_PROGRAM(
         [[__asm__(
               ".text\n\t"
               ".globl asmfunc\n\t"
               "asmfunc:\n\t"
               "xorq \$(1234), %rbp;\n\t"
           );]], [ asmfunc(); ])],
         [gcry_cv_gcc_win64_platform_as_ok=yes])])
     if test "$gcry_cv_gcc_win64_platform_as_ok" = "yes" ; then
       AC_DEFINE(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS,1,
                 [Defined if underlying assembler is compatible with WIN64 assembly implementations])
     fi
   fi
 fi
 
 
 #
 # Check whether GCC assembler supports features needed for assembly
 # implementations that use Intel syntax
 #
 AC_CACHE_CHECK([whether GCC assembler is compatible for Intel syntax assembly implementations],
        [gcry_cv_gcc_platform_as_ok_for_intel_syntax],
        [if test "$mpi_cpu_arch" != "x86" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_platform_as_ok_for_intel_syntax="n/a"
         else
           gcry_cv_gcc_platform_as_ok_for_intel_syntax=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(
                 ".intel_syntax noprefix\n\t"
                 ".text\n\t"
                 "actest:\n\t"
                 "pxor xmm1, xmm7;\n\t"
                 "vperm2i128 ymm2, ymm3, ymm0, 1;\n\t"
                 "add eax, ebp;\n\t"
                 "rorx eax, ebp, 1;\n\t"
                 "sub eax, [esp + 4];\n\t"
                 "add dword ptr [esp + eax], 0b10101;\n\t"
                 ".att_syntax prefix\n\t"
             );]], [ actest(); ])],
           [gcry_cv_gcc_platform_as_ok_for_intel_syntax=yes])
         fi])
 if test "$gcry_cv_gcc_platform_as_ok_for_intel_syntax" = "yes" ; then
   AC_DEFINE(HAVE_INTEL_SYNTAX_PLATFORM_AS,1,
             [Defined if underlying assembler is compatible with Intel syntax assembly implementations])
 fi
 
 
 #
 # Check whether compiler is configured for ARMv6 or newer architecture
 #
 AC_CACHE_CHECK([whether compiler is configured for ARMv6 or newer architecture],
        [gcry_cv_cc_arm_arch_is_v6],
        [if test "$mpi_cpu_arch" != "arm" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_cc_arm_arch_is_v6="n/a"
         else
           gcry_cv_cc_arm_arch_is_v6=no
           AC_COMPILE_IFELSE([AC_LANG_SOURCE(
           [[
            #if defined(__arm__) && \
              ((defined(__ARM_ARCH) && __ARM_ARCH >= 6) \
              || defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
              || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) \
              || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__) \
              || defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
              || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
              || defined(__ARM_ARCH_7EM__))
              /* empty */
            #else
              /* fail compile if not ARMv6. */
              not_armv6 not_armv6 = (not_armv6)not_armv6;
            #endif
           ]])],
           [gcry_cv_cc_arm_arch_is_v6=yes])
         fi])
 if test "$gcry_cv_cc_arm_arch_is_v6" = "yes" ; then
    AC_DEFINE(HAVE_ARM_ARCH_V6,1,
      [Defined if ARM architecture is v6 or newer])
 fi
 
 
 #
 # Check whether GCC inline assembler supports NEON instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports NEON instructions],
        [gcry_cv_gcc_inline_asm_neon],
        [if test "$mpi_cpu_arch" != "arm" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_neon="n/a"
         else
           gcry_cv_gcc_inline_asm_neon=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(
                 ".syntax unified\n\t"
                 ".arm\n\t"
                 ".fpu neon\n\t"
                 ".text\n\t"
                 "testfn:\n\t"
                 "vld1.64 {%q0-%q1}, [%r0]!;\n\t"
                 "vrev64.8 %q0, %q3;\n\t"
                 "vadd.u64 %q0, %q1;\n\t"
                 "vadd.s64 %d3, %d2, %d3;\n\t"
                 );
             ]], [ testfn(); ])],
           [gcry_cv_gcc_inline_asm_neon=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_neon" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_NEON,1,
      [Defined if inline assembler supports NEON instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports AArch32 Crypto Extension instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports AArch32 Crypto Extension instructions],
        [gcry_cv_gcc_inline_asm_aarch32_crypto],
        [if test "$mpi_cpu_arch" != "arm" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_aarch32_crypto="n/a"
         else
           gcry_cv_gcc_inline_asm_aarch32_crypto=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(
                 ".syntax unified\n\t"
                 ".arch armv8-a\n\t"
                 ".arm\n\t"
                 ".fpu crypto-neon-fp-armv8\n\t"
                 ".text\n\t"
 
                 "testfn:\n\t"
                 "sha1h.32 q0, q0;\n\t"
                 "sha1c.32 q0, q0, q0;\n\t"
                 "sha1p.32 q0, q0, q0;\n\t"
                 "sha1su0.32 q0, q0, q0;\n\t"
                 "sha1su1.32 q0, q0;\n\t"
 
                 "sha256h.32 q0, q0, q0;\n\t"
                 "sha256h2.32 q0, q0, q0;\n\t"
                 "sha1p.32 q0, q0, q0;\n\t"
                 "sha256su0.32 q0, q0;\n\t"
                 "sha256su1.32 q0, q0, q15;\n\t"
 
                 "aese.8 q0, q0;\n\t"
                 "aesd.8 q0, q0;\n\t"
                 "aesmc.8 q0, q0;\n\t"
                 "aesimc.8 q0, q0;\n\t"
 
                 "vmull.p64 q0, d0, d0;\n\t"
                 );
             ]], [ testfn(); ])],
           [gcry_cv_gcc_inline_asm_aarch32_crypto=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_aarch32_crypto" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_AARCH32_CRYPTO,1,
      [Defined if inline assembler supports AArch32 Crypto Extension instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports AArch64 NEON instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports AArch64 NEON instructions],
        [gcry_cv_gcc_inline_asm_aarch64_neon],
        [if test "$mpi_cpu_arch" != "aarch64" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_aarch64_neon="n/a"
         else
           gcry_cv_gcc_inline_asm_aarch64_neon=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(
                 ".cpu generic+simd\n\t"
                 ".text\n\t"
                 "testfn:\n\t"
                 "mov w0, \#42;\n\t"
                 "dup v0.8b, w0;\n\t"
                 "ld4 {v0.8b,v1.8b,v2.8b,v3.8b},[x0],\#32;\n\t"
                 );
             ]], [ testfn(); ])],
           [gcry_cv_gcc_inline_asm_aarch64_neon=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_aarch64_neon" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_AARCH64_NEON,1,
      [Defined if inline assembler supports AArch64 NEON instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports AArch64 Crypto Extension instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports AArch64 Crypto Extension instructions],
        [gcry_cv_gcc_inline_asm_aarch64_crypto],
        [if test "$mpi_cpu_arch" != "aarch64" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_aarch64_crypto="n/a"
         else
           gcry_cv_gcc_inline_asm_aarch64_crypto=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(
                 ".cpu generic+simd+crypto\n\t"
                 ".text\n\t"
                 "testfn:\n\t"
                 "mov w0, \#42;\n\t"
                 "dup v0.8b, w0;\n\t"
                 "ld4 {v0.8b,v1.8b,v2.8b,v3.8b},[x0],\#32;\n\t"
 
                 "sha1h s0, s0;\n\t"
                 "sha1c q0, s0, v0.4s;\n\t"
                 "sha1p q0, s0, v0.4s;\n\t"
                 "sha1su0 v0.4s, v0.4s, v0.4s;\n\t"
                 "sha1su1 v0.4s, v0.4s;\n\t"
 
                 "sha256h q0, q0, v0.4s;\n\t"
                 "sha256h2 q0, q0, v0.4s;\n\t"
                 "sha1p q0, s0, v0.4s;\n\t"
                 "sha256su0 v0.4s, v0.4s;\n\t"
                 "sha256su1 v0.4s, v0.4s, v31.4s;\n\t"
 
                 "aese v0.16b, v0.16b;\n\t"
                 "aesd v0.16b, v0.16b;\n\t"
                 "aesmc v0.16b, v0.16b;\n\t"
                 "aesimc v0.16b, v0.16b;\n\t"
 
                 "pmull v0.1q, v0.1d, v31.1d;\n\t"
                 "pmull2 v0.1q, v0.2d, v31.2d;\n\t"
                 );
             ]], [ testfn(); ])],
           [gcry_cv_gcc_inline_asm_aarch64_crypto=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_aarch64_crypto" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_AARCH64_CRYPTO,1,
      [Defined if inline assembler supports AArch64 Crypto Extension instructions])
 fi
 
 
 #
 # Check whether PowerPC AltiVec/VSX intrinsics
 #
 AC_CACHE_CHECK([whether compiler supports PowerPC AltiVec/VSX intrinsics],
       [gcry_cv_cc_ppc_altivec],
       [if test "$mpi_cpu_arch" != "ppc" ||
 	  test "$try_asm_modules" != "yes" ; then
 	gcry_cv_cc_ppc_altivec="n/a"
       else
 	gcry_cv_cc_ppc_altivec=no
 	AC_COMPILE_IFELSE([AC_LANG_SOURCE(
 	[[#include <altivec.h>
 	  typedef vector unsigned char block;
 	  typedef vector unsigned int vecu32;
 	  block fn(block in)
 	  {
 	    block t = vec_perm (in, in, vec_vsx_ld (0, (unsigned char*)0));
 	    vecu32 y = vec_vsx_ld (0, (unsigned int*)0);
 	    return vec_cipher_be (t, in) ^ (block)y;
 	  }
 	  ]])],
 	[gcry_cv_cc_ppc_altivec=yes])
       fi])
 if test "$gcry_cv_cc_ppc_altivec" = "yes" ; then
     AC_DEFINE(HAVE_COMPATIBLE_CC_PPC_ALTIVEC,1,
 	    [Defined if underlying compiler supports PowerPC AltiVec/VSX/crypto intrinsics])
 fi
 
 _gcc_cflags_save=$CFLAGS
 CFLAGS="$CFLAGS -maltivec -mvsx -mcrypto"
 
 if test "$gcry_cv_cc_ppc_altivec" = "no" &&
     test "$mpi_cpu_arch" = "ppc" &&
     test "$try_asm_modules" == "yes" ; then
   AC_CACHE_CHECK([whether compiler supports PowerPC AltiVec/VSX/crypto intrinsics with extra GCC flags],
     [gcry_cv_cc_ppc_altivec_cflags],
     [gcry_cv_cc_ppc_altivec_cflags=no
     AC_COMPILE_IFELSE([AC_LANG_SOURCE(
       [[#include <altivec.h>
 	typedef vector unsigned char block;
 	typedef vector unsigned int vecu32;
 	block fn(block in)
 	{
 	  block t = vec_perm (in, in, vec_vsx_ld (0, (unsigned char*)0));
 	  vecu32 y = vec_vsx_ld (0, (unsigned int*)0);
 	  return vec_cipher_be (t, in) ^ (block)y;
 	}]])],
       [gcry_cv_cc_ppc_altivec_cflags=yes])])
   if test "$gcry_cv_cc_ppc_altivec_cflags" = "yes" ; then
     AC_DEFINE(HAVE_COMPATIBLE_CC_PPC_ALTIVEC,1,
 	      [Defined if underlying compiler supports PowerPC AltiVec/VSX/crypto intrinsics])
     AC_DEFINE(HAVE_COMPATIBLE_CC_PPC_ALTIVEC_WITH_CFLAGS,1,
 	      [Defined if underlying compiler supports PowerPC AltiVec/VSX/crypto intrinsics with extra GCC flags])
   fi
 fi
 
 AM_CONDITIONAL(ENABLE_PPC_VCRYPTO_EXTRA_CFLAGS,
 	       test "$gcry_cv_cc_ppc_altivec_cflags" = "yes")
 
 # Restore flags.
 CFLAGS=$_gcc_cflags_save;
 
 
 #
 # Check whether GCC inline assembler supports PowerPC AltiVec/VSX/crypto instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports PowerPC AltiVec/VSX/crypto instructions],
        [gcry_cv_gcc_inline_asm_ppc_altivec],
        [if test "$mpi_cpu_arch" != "ppc" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_ppc_altivec="n/a"
         else
           gcry_cv_gcc_inline_asm_ppc_altivec=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(".globl testfn;\n"
                     ".text\n\t"
 		    "testfn:\n"
 		    "stvx %v31,%r12,%r0;\n"
 		    "lvx  %v20,%r12,%r0;\n"
 		    "vcipher %v0, %v1, %v22;\n"
 		    "lxvw4x %vs32, %r0, %r1;\n"
 		    "vadduwm %v0, %v1, %v22;\n"
 		    "vshasigmaw %v0, %v1, 0, 15;\n"
 		    "vshasigmad %v0, %v1, 0, 15;\n"
 		    "vpmsumd %v11, %v11, %v11;\n"
 		  );
             ]], [ testfn(); ] )],
           [gcry_cv_gcc_inline_asm_ppc_altivec=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_ppc_altivec" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_PPC_ALTIVEC,1,
      [Defined if inline assembler supports PowerPC AltiVec/VSX/crypto instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports PowerISA 3.00 instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports PowerISA 3.00 instructions],
        [gcry_cv_gcc_inline_asm_ppc_arch_3_00],
        [if test "$mpi_cpu_arch" != "ppc" ||
            test "$try_asm_modules" != "yes" ; then
           gcry_cv_gcc_inline_asm_ppc_arch_3_00="n/a"
         else
           gcry_cv_gcc_inline_asm_ppc_arch_3_00=no
           AC_LINK_IFELSE([AC_LANG_PROGRAM(
           [[__asm__(".text\n\t"
 		    ".globl testfn;\n"
 		    "testfn:\n"
 		    "stxvb16x %r1,%v12,%v30;\n"
 		  );
             ]], [ testfn(); ])],
           [gcry_cv_gcc_inline_asm_ppc_arch_3_00=yes])
         fi])
 if test "$gcry_cv_gcc_inline_asm_ppc_arch_3_00" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_PPC_ARCH_3_00,1,
      [Defined if inline assembler supports PowerISA 3.00 instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports zSeries instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports zSeries instructions],
       [gcry_cv_gcc_inline_asm_s390x],
       [if test "$mpi_cpu_arch" != "s390x" ||
 	  test "$try_asm_modules" != "yes" ; then
 	  gcry_cv_gcc_inline_asm_s390x="n/a"
 	else
 	  gcry_cv_gcc_inline_asm_s390x=no
 	  AC_LINK_IFELSE([AC_LANG_PROGRAM(
 	  [[typedef unsigned int u128_t __attribute__ ((mode (TI)));
 	    unsigned int testfunc(unsigned int x, void *y, unsigned int z)
 	    {
 	      unsigned long fac[8];
 	      register unsigned long reg0 asm("0") = 0;
 	      register unsigned long reg1 asm("1") = x;
 	      u128_t r1 = ((u128_t)(unsigned long)y << 64) | (unsigned long)z;
 	      u128_t r2 = 0;
 	      u128_t r3 = 0;
 	      asm volatile (".insn rre,0xb92e << 16, %[r1], %[r2]\n\t"
 			    : [r1] "+a" (r1), [r2] "+a" (r2)
 			    : "r" (reg0), "r" (reg1)
 			    : "cc", "memory");
 	      asm volatile (".insn rrf,0xb929 << 16, %[r1], %[r2], %[r3], 0\n\t"
 			    : [r1] "+a" (r1), [r2] "+a" (r2), [r3] "+a" (r3)
 			    : "r" (reg0), "r" (reg1)
 			    : "cc", "memory");
 	      reg0 = 8 - 1;
 	      asm ("stfle %1\n\t"
 	           : "+d" (reg0), "=Q" (fac[0])
 	           :
 	           : "cc", "memory");
 	      asm volatile ("mvc 0(16, %0), 0(%1)\n\t"
 			    :
 			    : "a" (y), "a" (fac)
 			    : "memory");
 	      asm volatile ("xc 0(16, %0), 0(%0)\n\t"
 			    :
 			    : "a" (fac)
 			    : "memory");
 	      asm volatile ("risbgn %%r11, %%r11, 0, 129, 0\n\t"
 			    :
 			    :
 			    : "memory", "r11");
 	      asm volatile ("algrk %%r14, %%r14, %%r14\n\t"
 			    :
 			    :
 			    : "memory", "r14");
 	      return (unsigned int)r1 ^ reg0;
 	    }
 	    ]] , [ testfunc(0, 0, 0); ])],
 	  [gcry_cv_gcc_inline_asm_s390x=yes])
 	fi])
 if test "$gcry_cv_gcc_inline_asm_s390x" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_S390X,1,
      [Defined if inline assembler supports zSeries instructions])
 fi
 
 
 #
 # Check whether GCC inline assembler supports zSeries vector instructions
 #
 AC_CACHE_CHECK([whether GCC inline assembler supports zSeries vector instructions],
       [gcry_cv_gcc_inline_asm_s390x_vx],
       [if test "$mpi_cpu_arch" != "s390x" ||
 	  test "$try_asm_modules" != "yes" ; then
 	  gcry_cv_gcc_inline_asm_s390x_vx="n/a"
 	else
 	  gcry_cv_gcc_inline_asm_s390x_vx=no
 	  if test "$gcry_cv_gcc_inline_asm_s390x" = "yes" ; then
 	    AC_LINK_IFELSE([AC_LANG_PROGRAM(
 	    [[void testfunc(void)
 	      {
 		asm volatile (".machine \"z13+vx\"\n\t"
 			      "vx %%v0, %%v1, %%v31\n\t"
 			      "verllf %%v11, %%v11, (16)(0)\n\t"
 			      :
 			      :
 			      : "memory");
 	      }
 	      ]], [ testfunc(); ])],
 	    [gcry_cv_gcc_inline_asm_s390x_vx=yes])
 	  fi
 	fi])
 if test "$gcry_cv_gcc_inline_asm_s390x_vx" = "yes" ; then
    AC_DEFINE(HAVE_GCC_INLINE_ASM_S390X_VX,1,
      [Defined if inline assembler supports zSeries vector instructions])
 fi
 
 
 #######################################
 #### Checks for library functions. ####
 #######################################
 
 AC_FUNC_VPRINTF
 # We have replacements for these in src/missing-string.c
 AC_CHECK_FUNCS(stpcpy strcasecmp)
 # We have replacements for these in src/g10lib.h
 AC_CHECK_FUNCS(strtoul memmove stricmp atexit raise)
 # Other checks
 AC_CHECK_FUNCS(strerror rand mmap getpagesize sysconf waitpid wait4)
 AC_CHECK_FUNCS(gettimeofday getrusage gethrtime clock_gettime syslog)
 AC_CHECK_FUNCS(syscall fcntl ftruncate flockfile getauxval elf_aux_info)
 AC_CHECK_FUNCS(explicit_bzero explicit_memset getentropy)
 
 GNUPG_CHECK_MLOCK
 
 #
 # Replacement functions.
 #
 AC_REPLACE_FUNCS([getpid clock])
 
 
 #
 # Check whether it is necessary to link against libdl.
 #
 DL_LIBS=""
 if test "$use_hmac_binary_check" = yes ; then
   _gcry_save_libs="$LIBS"
   LIBS=""
   AC_SEARCH_LIBS(dlopen, c dl,,,)
   DL_LIBS=$LIBS
   LIBS="$_gcry_save_libs"
 fi
 AC_SUBST(DL_LIBS)
 
 
 #
 # Check whether we can use Linux capabilities as requested.
 #
 if test "$use_capabilities" = "yes" ; then
 use_capabilities=no
 AC_CHECK_HEADERS(sys/capability.h)
 if test "$ac_cv_header_sys_capability_h" = "yes" ; then
   AC_CHECK_LIB(cap, cap_init, ac_need_libcap=1)
   if test "$ac_cv_lib_cap_cap_init" = "yes"; then
      AC_DEFINE(USE_CAPABILITIES,1,
                [define if capabilities should be used])
      LIBS="$LIBS -lcap"
      use_capabilities=yes
   fi
 fi
 if test "$use_capabilities" = "no" ; then
     AC_MSG_WARN([[
 ***
 *** The use of capabilities on this system is not possible.
 *** You need a recent Linux kernel and some patches:
 ***   fcaps-2.2.9-990610.patch      (kernel patch for 2.2.9)
 ***   fcap-module-990613.tar.gz     (kernel module)
 ***   libcap-1.92.tar.gz            (user mode library and utilities)
 *** And you have to configure the kernel with CONFIG_VFS_CAP_PLUGIN
 *** set (filesystems menu). Be warned: This code is *really* ALPHA.
 ***]])
 fi
 fi
 
 # Check whether a random device is available.
 if test "$try_dev_random" = yes ; then
     AC_CACHE_CHECK(for random device, ac_cv_have_dev_random,
     [if test -r "$NAME_OF_DEV_RANDOM" && test -r "$NAME_OF_DEV_URANDOM" ; then
       ac_cv_have_dev_random=yes; else ac_cv_have_dev_random=no; fi])
     if test "$ac_cv_have_dev_random" = yes; then
         AC_DEFINE(HAVE_DEV_RANDOM,1,
                  [defined if the system supports a random device] )
     fi
 else
     AC_MSG_CHECKING(for random device)
     ac_cv_have_dev_random=no
     AC_MSG_RESULT(has been disabled)
 fi
 
 # Figure out the random modules for this configuration.
 if test "$random" = "default"; then
 
     # Select default value.
     if test "$ac_cv_have_dev_random" = yes; then
         # Try Linuxish random device.
         random_modules="linux"
     else
         case "${host}" in
         *-*-mingw32ce*)
           # WindowsCE random device.
           random_modules="w32ce"
           ;;
         *-*-mingw32*|*-*-cygwin*)
           # Windows random device.
           random_modules="w32"
           ;;
         *)
           # Build everything, allow to select at runtime.
           random_modules="$auto_random_modules"
           ;;
         esac
     fi
 else
     if test "$random" = "auto"; then
         # Build everything, allow to select at runtime.
         random_modules="$auto_random_modules"
     else
         random_modules="$random"
     fi
 fi
 
 
 #
 # Other defines
 #
 if test mym4_isgit = "yes"; then
     AC_DEFINE(IS_DEVELOPMENT_VERSION,1,
               [Defined if this is not a regular release])
 fi
 
 
 AM_CONDITIONAL(CROSS_COMPILING, test x$cross_compiling = xyes)
 
 
 # This is handy for debugging so the compiler doesn't rearrange
 # things and eliminate variables.
 AC_ARG_ENABLE(optimization,
        AS_HELP_STRING([--disable-optimization],
                       [disable compiler optimization]),
                       [if test $enableval = no ; then
                          CFLAGS=`echo $CFLAGS | sed 's/-O[[0-9]]//'`
                        fi])
 
 AC_MSG_NOTICE([checking for cc features])
 # CFLAGS mangling when using gcc.
 if test "$GCC" = yes; then
     AC_MSG_CHECKING([if gcc supports -fno-delete-null-pointer-checks])
     _gcc_cflags_save=$CFLAGS
     CFLAGS="-fno-delete-null-pointer-checks"
     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],_gcc_wopt=yes,_gcc_wopt=no)
     AC_MSG_RESULT($_gcc_wopt)
     CFLAGS=$_gcc_cflags_save;
     if test x"$_gcc_wopt" = xyes ; then
        CFLAGS="$CFLAGS -fno-delete-null-pointer-checks"
     fi
 
     CFLAGS="$CFLAGS -Wall"
     if test "$USE_MAINTAINER_MODE" = "yes"; then
         CFLAGS="$CFLAGS -Wcast-align -Wshadow -Wstrict-prototypes"
         CFLAGS="$CFLAGS -Wformat -Wno-format-y2k -Wformat-security"
 
         # If -Wno-missing-field-initializers is supported we can enable a
         # a bunch of really useful warnings.
         AC_MSG_CHECKING([if gcc supports -Wno-missing-field-initializers])
         _gcc_cflags_save=$CFLAGS
         CFLAGS="-Wno-missing-field-initializers"
         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],_gcc_wopt=yes,_gcc_wopt=no)
         AC_MSG_RESULT($_gcc_wopt)
         CFLAGS=$_gcc_cflags_save;
         if test x"$_gcc_wopt" = xyes ; then
           CFLAGS="$CFLAGS -W -Wextra -Wbad-function-cast"
           CFLAGS="$CFLAGS -Wwrite-strings"
           CFLAGS="$CFLAGS -Wdeclaration-after-statement"
           CFLAGS="$CFLAGS -Wno-missing-field-initializers"
           CFLAGS="$CFLAGS -Wno-sign-compare"
         fi
 
         AC_MSG_CHECKING([if gcc supports -Wpointer-arith])
         _gcc_cflags_save=$CFLAGS
         CFLAGS="-Wpointer-arith"
         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],_gcc_wopt=yes,_gcc_wopt=no)
         AC_MSG_RESULT($_gcc_wopt)
         CFLAGS=$_gcc_cflags_save;
         if test x"$_gcc_wopt" = xyes ; then
           CFLAGS="$CFLAGS -Wpointer-arith"
         fi
     fi
 fi
 
 # Check whether as(1) supports a noeexecstack feature.  This test
 # includes an override option.
 CL_AS_NOEXECSTACK
 
 
 AC_SUBST(LIBGCRYPT_CONFIG_API_VERSION)
 AC_SUBST(LIBGCRYPT_CONFIG_LIBS)
 AC_SUBST(LIBGCRYPT_CONFIG_CFLAGS)
 AC_SUBST(LIBGCRYPT_CONFIG_HOST)
 AC_SUBST(LIBGCRYPT_THREAD_MODULES)
 
 AC_CONFIG_COMMANDS([gcrypt-conf],[[
 chmod +x src/libgcrypt-config
 ]],[[
 prefix=$prefix
 exec_prefix=$exec_prefix
 libdir=$libdir
 datadir=$datadir
 DATADIRNAME=$DATADIRNAME
 ]])
 
 #####################
 #### Conclusion. ####
 #####################
 
 # Check that requested feature can actually be used and define
 # ENABLE_foo_SUPPORT macros.
 
 if test x"$aesnisupport" = xyes ; then
   if test "$gcry_cv_gcc_inline_asm_ssse3" != "yes" ; then
     aesnisupport="no (unsupported by compiler)"
   fi
 fi
 if test x"$shaextsupport" = xyes ; then
   if test "$gcry_cv_gcc_inline_asm_shaext" != "yes" ; then
     shaextsupport="no (unsupported by compiler)"
   fi
 fi
 if test x"$pclmulsupport" = xyes ; then
   if test "$gcry_cv_gcc_inline_asm_pclmul" != "yes" ; then
     pclmulsupport="no (unsupported by compiler)"
   fi
 fi
 if test x"$sse41support" = xyes ; then
   if test "$gcry_cv_gcc_inline_asm_sse41" != "yes" ; then
     sse41support="no (unsupported by compiler)"
   fi
 fi
 if test x"$avxsupport" = xyes ; then
   if test "$gcry_cv_gcc_inline_asm_avx" != "yes" ; then
     avxsupport="no (unsupported by compiler)"
   fi
 fi
 if test x"$avx2support" = xyes ; then
   if test "$gcry_cv_gcc_inline_asm_avx2" != "yes" ; then
     avx2support="no (unsupported by compiler)"
   fi
 fi
 if test x"$neonsupport" = xyes ; then
   if test "$gcry_cv_gcc_inline_asm_neon" != "yes" ; then
     if test "$gcry_cv_gcc_inline_asm_aarch64_neon" != "yes" ; then
       neonsupport="no (unsupported by compiler)"
     fi
   fi
 fi
 if test x"$armcryptosupport" = xyes ; then
   if test "$gcry_cv_gcc_inline_asm_aarch32_crypto" != "yes" ; then
     if test "$gcry_cv_gcc_inline_asm_aarch64_crypto" != "yes" ; then
       neonsupport="no (unsupported by compiler)"
     fi
   fi
 fi
 
 if test x"$aesnisupport" = xyes ; then
   AC_DEFINE(ENABLE_AESNI_SUPPORT, 1,
             [Enable support for Intel AES-NI instructions.])
 fi
 if test x"$shaextsupport" = xyes ; then
   AC_DEFINE(ENABLE_SHAEXT_SUPPORT, 1,
             [Enable support for Intel SHAEXT instructions.])
 fi
 if test x"$pclmulsupport" = xyes ; then
   AC_DEFINE(ENABLE_PCLMUL_SUPPORT, 1,
             [Enable support for Intel PCLMUL instructions.])
 fi
 if test x"$sse41support" = xyes ; then
   AC_DEFINE(ENABLE_SSE41_SUPPORT, 1,
             [Enable support for Intel SSE4.1 instructions.])
 fi
 if test x"$avxsupport" = xyes ; then
   AC_DEFINE(ENABLE_AVX_SUPPORT,1,
             [Enable support for Intel AVX instructions.])
 fi
 if test x"$avx2support" = xyes ; then
   AC_DEFINE(ENABLE_AVX2_SUPPORT,1,
             [Enable support for Intel AVX2 instructions.])
 fi
 if test x"$neonsupport" = xyes ; then
   AC_DEFINE(ENABLE_NEON_SUPPORT,1,
             [Enable support for ARM NEON instructions.])
 fi
 if test x"$armcryptosupport" = xyes ; then
   AC_DEFINE(ENABLE_ARM_CRYPTO_SUPPORT,1,
             [Enable support for ARMv8 Crypto Extension instructions.])
 fi
 if test x"$ppccryptosupport" = xyes ; then
   AC_DEFINE(ENABLE_PPC_CRYPTO_SUPPORT,1,
             [Enable support for POWER 8 (PowerISA 2.07) crypto extension.])
 fi
 if test x"$jentsupport" = xyes ; then
   AC_DEFINE(ENABLE_JENT_SUPPORT, 1,
             [Enable support for the jitter entropy collector.])
 fi
 if test x"$padlocksupport" = xyes ; then
   AC_DEFINE(ENABLE_PADLOCK_SUPPORT, 1,
             [Enable support for the PadLock engine.])
 fi
 if test x"$drngsupport" = xyes ; then
   AC_DEFINE(ENABLE_DRNG_SUPPORT, 1,
             [Enable support for Intel DRNG (RDRAND instruction).])
 fi
 
 
 if test x"$force_soft_hwfeatures" = xyes ; then
   AC_DEFINE(ENABLE_FORCE_SOFT_HWFEATURES, 1,
             [Enable forcing 'soft' HW feature bits on (for testing).])
 fi
 
 # Define conditional sources and config.h symbols depending on the
 # selected ciphers, pubkey-ciphers, digests, kdfs, and random modules.
 
 LIST_MEMBER(arcfour, $enabled_ciphers)
 if test "$found" = "1"; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS arcfour.lo"
    AC_DEFINE(USE_ARCFOUR, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS arcfour-amd64.lo"
       ;;
    esac
 fi
 
 LIST_MEMBER(blowfish, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS blowfish.lo"
    AC_DEFINE(USE_BLOWFISH, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS blowfish-amd64.lo"
       ;;
       arm*-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS blowfish-arm.lo"
       ;;
    esac
 fi
 
 LIST_MEMBER(cast5, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS cast5.lo"
    AC_DEFINE(USE_CAST5, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS cast5-amd64.lo"
       ;;
       arm*-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS cast5-arm.lo"
       ;;
    esac
 fi
 
 LIST_MEMBER(des, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS des.lo"
    AC_DEFINE(USE_DES, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS des-amd64.lo"
       ;;
    esac
 fi
 
 LIST_MEMBER(aes, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael.lo"
    AC_DEFINE(USE_AES, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-amd64.lo"
 
          # Build with the SSSE3 implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-ssse3-amd64.lo"
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-ssse3-amd64-asm.lo"
       ;;
       arm*-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-arm.lo"
 
          # Build with the ARMv8/AArch32 CE implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-armv8-ce.lo"
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-armv8-aarch32-ce.lo"
       ;;
       aarch64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-aarch64.lo"
 
          # Build with the ARMv8/AArch64 CE implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-armv8-ce.lo"
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-armv8-aarch64-ce.lo"
       ;;
       powerpc64le-*-*)
          # Build with the crypto extension implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-ppc.lo"
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-ppc9le.lo"
       ;;
       powerpc64-*-*)
          # Big-Endian.
          # Build with the crypto extension implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-ppc.lo"
       ;;
       powerpc-*-*)
          # Big-Endian.
          # Build with the crypto extension implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-ppc.lo"
       ;;
       s390x-*-*)
          # Big-Endian.
          # Build with the crypto extension implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-s390x.lo"
       ;;
    esac
 
    case "$mpi_cpu_arch" in
      x86)
          # Build with the AES-NI implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-aesni.lo"
 
          # Build with the Padlock implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-padlock.lo"
       ;;
    esac
 fi
 
 LIST_MEMBER(twofish, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS twofish.lo"
    AC_DEFINE(USE_TWOFISH, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS twofish-amd64.lo"
 
          if test x"$avx2support" = xyes ; then
             # Build with the AVX2 implementation
             GCRYPT_CIPHERS="$GCRYPT_CIPHERS twofish-avx2-amd64.lo"
          fi
       ;;
       arm*-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS twofish-arm.lo"
       ;;
       aarch64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS twofish-aarch64.lo"
       ;;
    esac
 fi
 
 LIST_MEMBER(serpent, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS serpent.lo"
    AC_DEFINE(USE_SERPENT, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the SSE2 implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS serpent-sse2-amd64.lo"
       ;;
    esac
 
    if test x"$avx2support" = xyes ; then
       # Build with the AVX2 implementation
       GCRYPT_CIPHERS="$GCRYPT_CIPHERS serpent-avx2-amd64.lo"
    fi
 
    if test x"$neonsupport" = xyes ; then
       # Build with the NEON implementation
       GCRYPT_CIPHERS="$GCRYPT_CIPHERS serpent-armv7-neon.lo"
    fi
 fi
 
 LIST_MEMBER(rfc2268, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS rfc2268.lo"
    AC_DEFINE(USE_RFC2268, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(seed, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS seed.lo"
    AC_DEFINE(USE_SEED, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(camellia, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS camellia.lo camellia-glue.lo"
    AC_DEFINE(USE_CAMELLIA, 1, [Defined if this module should be included])
 
    case "${host}" in
       arm*-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS camellia-arm.lo"
       ;;
       aarch64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS camellia-aarch64.lo"
       ;;
    esac
 
    if test x"$avxsupport" = xyes ; then
       if test x"$aesnisupport" = xyes ; then
         # Build with the AES-NI/AVX implementation
         GCRYPT_CIPHERS="$GCRYPT_CIPHERS camellia-aesni-avx-amd64.lo"
       fi
    fi
 
    if test x"$avx2support" = xyes ; then
       if test x"$aesnisupport" = xyes ; then
         # Build with the AES-NI/AVX2 implementation
         GCRYPT_CIPHERS="$GCRYPT_CIPHERS camellia-aesni-avx2-amd64.lo"
       fi
    fi
 fi
 
 LIST_MEMBER(idea, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS idea.lo"
    AC_DEFINE(USE_IDEA, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(salsa20, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS salsa20.lo"
    AC_DEFINE(USE_SALSA20, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS salsa20-amd64.lo"
       ;;
    esac
 
    if test x"$neonsupport" = xyes ; then
      # Build with the NEON implementation
      GCRYPT_CIPHERS="$GCRYPT_CIPHERS salsa20-armv7-neon.lo"
    fi
 fi
 
 LIST_MEMBER(gost28147, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS gost28147.lo"
    AC_DEFINE(USE_GOST28147, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(chacha20, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20.lo"
    AC_DEFINE(USE_CHACHA20, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-amd64-ssse3.lo"
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-amd64-avx2.lo"
       ;;
       aarch64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-aarch64.lo"
       ;;
       powerpc64le-*-*)
          # Build with the ppc8 vector implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-ppc.lo"
       ;;
       powerpc64-*-*)
          # Build with the ppc8 vector implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-ppc.lo"
       ;;
       powerpc-*-*)
          # Build with the ppc8 vector implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-ppc.lo"
       ;;
       s390x-*-*)
          # Build with the s390x/zSeries vector implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-s390x.lo"
       ;;
    esac
 
    if test x"$neonsupport" = xyes ; then
      # Build with the NEON implementation
      GCRYPT_CIPHERS="$GCRYPT_CIPHERS chacha20-armv7-neon.lo"
    fi
 fi
 
 LIST_MEMBER(sm4, $enabled_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_CIPHERS="$GCRYPT_CIPHERS sm4.lo"
    AC_DEFINE(USE_SM4, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS sm4-aesni-avx-amd64.lo"
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS sm4-aesni-avx2-amd64.lo"
       ;;
    esac
 fi
 
 LIST_MEMBER(dsa, $enabled_pubkey_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_PUBKEY_CIPHERS="$GCRYPT_PUBKEY_CIPHERS dsa.lo"
    AC_DEFINE(USE_DSA, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(rsa, $enabled_pubkey_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_PUBKEY_CIPHERS="$GCRYPT_PUBKEY_CIPHERS rsa.lo"
    AC_DEFINE(USE_RSA, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(elgamal, $enabled_pubkey_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_PUBKEY_CIPHERS="$GCRYPT_PUBKEY_CIPHERS elgamal.lo"
    AC_DEFINE(USE_ELGAMAL, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(ecc, $enabled_pubkey_ciphers)
 if test "$found" = "1" ; then
    GCRYPT_PUBKEY_CIPHERS="$GCRYPT_PUBKEY_CIPHERS \
                           ecc.lo ecc-curves.lo ecc-misc.lo \
                           ecc-ecdh.lo ecc-ecdsa.lo ecc-eddsa.lo ecc-gost.lo \
                           ecc-sm2.lo"
    AC_DEFINE(USE_ECC, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(crc, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS crc.lo"
    AC_DEFINE(USE_CRC, 1, [Defined if this module should be included])
 
    case "${host}" in
       i?86-*-* | x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS crc-intel-pclmul.lo"
       ;;
       aarch64-*-*)
          # Build with the assembly implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS crc-armv8-ce.lo"
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS crc-armv8-aarch64-ce.lo"
       ;;
       powerpc64le-*-*)
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS crc-ppc.lo"
       ;;
       powerpc64-*-*)
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS crc-ppc.lo"
       ;;
       powerpc-*-*)
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS crc-ppc.lo"
       ;;
    esac
 fi
 
 LIST_MEMBER(gostr3411-94, $enabled_digests)
 if test "$found" = "1" ; then
    # GOST R 34.11-94 internally uses GOST 28147-89
    LIST_MEMBER(gost28147, $enabled_ciphers)
    if test "$found" = "1" ; then
       GCRYPT_DIGESTS="$GCRYPT_DIGESTS gostr3411-94.lo"
       AC_DEFINE(USE_GOST_R_3411_94, 1, [Defined if this module should be included])
    fi
 fi
 
 LIST_MEMBER(stribog, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS stribog.lo"
    AC_DEFINE(USE_GOST_R_3411_12, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(md2, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS md2.lo"
    AC_DEFINE(USE_MD2, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(md4, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS md4.lo"
    AC_DEFINE(USE_MD4, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(md5, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS md5.lo"
    AC_DEFINE(USE_MD5, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(rmd160, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS rmd160.lo"
    AC_DEFINE(USE_RMD160, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(sha256, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256.lo"
    AC_DEFINE(USE_SHA256, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-ssse3-amd64.lo"
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-avx-amd64.lo"
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-avx2-bmi2-amd64.lo"
       ;;
       arm*-*-*)
          # Build with the assembly implementation
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-armv8-aarch32-ce.lo"
       ;;
       aarch64-*-*)
          # Build with the assembly implementation
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-armv8-aarch64-ce.lo"
       ;;
       powerpc64le-*-*)
          # Build with the crypto extension implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS sha256-ppc.lo"
       ;;
       powerpc64-*-*)
          # Big-Endian.
          # Build with the crypto extension implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS sha256-ppc.lo"
       ;;
       powerpc-*-*)
          # Big-Endian.
          # Build with the crypto extension implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS sha256-ppc.lo"
    esac
 
    case "$mpi_cpu_arch" in
      x86)
        # Build with the SHAEXT implementation
        GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha256-intel-shaext.lo"
      ;;
    esac
 fi
 
 LIST_MEMBER(sha512, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512.lo"
    AC_DEFINE(USE_SHA512, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-ssse3-amd64.lo"
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-avx-amd64.lo"
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-avx2-bmi2-amd64.lo"
       ;;
       i?86-*-*)
          # Build with the assembly implementation
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-ssse3-i386.lo"
       ;;
       arm*-*-*)
          # Build with the assembly implementation
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-arm.lo"
       ;;
       powerpc64le-*-*)
          # Build with the crypto extension implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS sha512-ppc.lo"
       ;;
       powerpc64-*-*)
          # Big-Endian.
          # Build with the crypto extension implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS sha512-ppc.lo"
       ;;
       powerpc-*-*)
          # Big-Endian.
          # Build with the crypto extension implementation
          GCRYPT_CIPHERS="$GCRYPT_CIPHERS sha512-ppc.lo"
    esac
 
    if test x"$neonsupport" = xyes ; then
      # Build with the NEON implementation
      GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-armv7-neon.lo"
    fi
 fi
 
 LIST_MEMBER(sha3, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS keccak.lo"
    AC_DEFINE(USE_SHA3, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          :
       ;;
    esac
 
    if test x"$neonsupport" = xyes ; then
      # Build with the NEON implementation
      GCRYPT_DIGESTS="$GCRYPT_DIGESTS keccak-armv7-neon.lo"
    fi
 fi
 
 LIST_MEMBER(tiger, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS tiger.lo"
    AC_DEFINE(USE_TIGER, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(whirlpool, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS whirlpool.lo"
    AC_DEFINE(USE_WHIRLPOOL, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS whirlpool-sse2-amd64.lo"
       ;;
    esac
 fi
 
 LIST_MEMBER(blake2, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS blake2.lo"
    AC_DEFINE(USE_BLAKE2, 1, [Defined if this module should be included])
 
    case "${host}" in
       x86_64-*-*)
          # Build with the assembly implementation
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS blake2b-amd64-avx2.lo"
          GCRYPT_DIGESTS="$GCRYPT_DIGESTS blake2s-amd64-avx.lo"
       ;;
    esac
 fi
 
 # SHA-1 needs to be included always for example because it is used by
 # random-csprng.c.
 GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1.lo"
 AC_DEFINE(USE_SHA1, 1,   [Defined if this module should be included])
 
 case "${host}" in
   x86_64-*-*)
     # Build with the assembly implementation
     GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-ssse3-amd64.lo"
     GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-avx-amd64.lo"
     GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-avx-bmi2-amd64.lo"
     GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-avx2-bmi2-amd64.lo"
   ;;
   arm*-*-*)
     # Build with the assembly implementation
     GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-armv7-neon.lo"
     GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-armv8-aarch32-ce.lo"
   ;;
   aarch64-*-*)
     # Build with the assembly implementation
     GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-armv8-aarch64-ce.lo"
   ;;
 esac
 
 case "$mpi_cpu_arch" in
   x86)
     # Build with the SHAEXT implementation
     GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha1-intel-shaext.lo"
   ;;
 esac
 
 LIST_MEMBER(sm3, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS sm3.lo"
    AC_DEFINE(USE_SM3, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(scrypt, $enabled_kdfs)
 if test "$found" = "1" ; then
    GCRYPT_KDFS="$GCRYPT_KDFS scrypt.lo"
    AC_DEFINE(USE_SCRYPT, 1, [Defined if this module should be included])
 fi
 
 LIST_MEMBER(linux, $random_modules)
 if test "$found" = "1" ; then
    GCRYPT_RANDOM="$GCRYPT_RANDOM rndlinux.lo"
    AC_DEFINE(USE_RNDLINUX, 1, [Defined if the /dev/random RNG should be used.])
 fi
 
 LIST_MEMBER(unix, $random_modules)
 if test "$found" = "1" ; then
    GCRYPT_RANDOM="$GCRYPT_RANDOM rndunix.lo"
    AC_DEFINE(USE_RNDUNIX, 1, [Defined if the default Unix RNG should be used.])
 fi
 
 LIST_MEMBER(egd, $random_modules)
 if test "$found" = "1" ; then
    GCRYPT_RANDOM="$GCRYPT_RANDOM rndegd.lo"
    AC_DEFINE(USE_RNDEGD, 1, [Defined if the EGD based RNG should be used.])
 fi
 
 LIST_MEMBER(w32, $random_modules)
 if test "$found" = "1" ; then
    GCRYPT_RANDOM="$GCRYPT_RANDOM rndw32.lo"
    AC_DEFINE(USE_RNDW32, 1,
              [Defined if the Windows specific RNG should be used.])
 fi
 
 LIST_MEMBER(w32ce, $random_modules)
 if test "$found" = "1" ; then
    GCRYPT_RANDOM="$GCRYPT_RANDOM rndw32ce.lo"
    AC_DEFINE(USE_RNDW32CE, 1,
              [Defined if the WindowsCE specific RNG should be used.])
 fi
 
 AC_SUBST([GCRYPT_CIPHERS])
 AC_SUBST([GCRYPT_PUBKEY_CIPHERS])
 AC_SUBST([GCRYPT_DIGESTS])
 AC_SUBST([GCRYPT_KDFS])
 AC_SUBST([GCRYPT_RANDOM])
 
 AC_SUBST(LIBGCRYPT_CIPHERS, $enabled_ciphers)
 AC_SUBST(LIBGCRYPT_PUBKEY_CIPHERS, $enabled_pubkey_ciphers)
 AC_SUBST(LIBGCRYPT_DIGESTS, $enabled_digests)
 
 # For printing the configuration we need a colon separated list of
 # algorithm names.
 tmp=`echo "$enabled_ciphers" | tr ' ' : `
 AC_DEFINE_UNQUOTED(LIBGCRYPT_CIPHERS, "$tmp",
                    [List of available cipher algorithms])
 tmp=`echo "$enabled_pubkey_ciphers" | tr ' ' : `
 AC_DEFINE_UNQUOTED(LIBGCRYPT_PUBKEY_CIPHERS, "$tmp",
                    [List of available public key cipher algorithms])
 tmp=`echo "$enabled_digests" | tr ' ' : `
 AC_DEFINE_UNQUOTED(LIBGCRYPT_DIGESTS, "$tmp",
                    [List of available digest algorithms])
 tmp=`echo "$enabled_kdfs" | tr ' ' : `
 AC_DEFINE_UNQUOTED(LIBGCRYPT_KDFS, "$tmp",
                    [List of available KDF algorithms])
 
 
 #
 # Define conditional sources depending on the used hardware platform.
 # Note that all possible modules must also be listed in
 # src/Makefile.am (EXTRA_libgcrypt_la_SOURCES).
 #
 GCRYPT_HWF_MODULES=
 case "$mpi_cpu_arch" in
      x86)
         AC_DEFINE(HAVE_CPU_ARCH_X86, 1,   [Defined for the x86 platforms])
         GCRYPT_HWF_MODULES="libgcrypt_la-hwf-x86.lo"
         ;;
      alpha)
         AC_DEFINE(HAVE_CPU_ARCH_ALPHA, 1, [Defined for Alpha platforms])
         ;;
      sparc)
         AC_DEFINE(HAVE_CPU_ARCH_SPARC, 1, [Defined for SPARC platforms])
         ;;
      mips)
         AC_DEFINE(HAVE_CPU_ARCH_MIPS, 1,  [Defined for MIPS platforms])
         ;;
      m68k)
         AC_DEFINE(HAVE_CPU_ARCH_M68K, 1,  [Defined for M68k platforms])
         ;;
      ppc)
         AC_DEFINE(HAVE_CPU_ARCH_PPC, 1,   [Defined for PPC platforms])
         GCRYPT_HWF_MODULES="libgcrypt_la-hwf-ppc.lo"
         ;;
      arm)
         AC_DEFINE(HAVE_CPU_ARCH_ARM, 1,   [Defined for ARM platforms])
         GCRYPT_HWF_MODULES="libgcrypt_la-hwf-arm.lo"
         ;;
      aarch64)
         AC_DEFINE(HAVE_CPU_ARCH_ARM, 1,   [Defined for ARM AArch64 platforms])
         GCRYPT_HWF_MODULES="libgcrypt_la-hwf-arm.lo"
         ;;
      s390x)
         AC_DEFINE(HAVE_CPU_ARCH_S390X, 1, [Defined for s390x/zSeries platforms])
         GCRYPT_HWF_MODULES="libgcrypt_la-hwf-s390x.lo"
         ;;
 esac
 AC_SUBST([GCRYPT_HWF_MODULES])
 
 
 #
 # Option to disable building of doc file
 #
 build_doc=yes
 AC_ARG_ENABLE([doc], AS_HELP_STRING([--disable-doc],
                                     [do not build the documentation]),
                      build_doc=$enableval, build_doc=yes)
 AM_CONDITIONAL([BUILD_DOC], [test "x$build_doc" != xno])
 
 
 #
 # Provide information about the build.
 #
 BUILD_REVISION="mym4_revision"
 AC_SUBST(BUILD_REVISION)
 AC_DEFINE_UNQUOTED(BUILD_REVISION, "$BUILD_REVISION",
                    [GIT commit id revision used to build this package])
 
 changequote(,)dnl
 BUILD_VERSION=`echo "$PACKAGE_VERSION" | sed 's/\([0-9.]*\).*/\1./'`
 changequote([,])dnl
 BUILD_VERSION="${BUILD_VERSION}mym4_revision_dec"
 BUILD_FILEVERSION=`echo "${BUILD_VERSION}" | tr . ,`
 AC_SUBST(BUILD_VERSION)
 AC_SUBST(BUILD_FILEVERSION)
 
 AC_ARG_ENABLE([build-timestamp],
   AS_HELP_STRING([--enable-build-timestamp],
                  [set an explicit build timestamp for reproducibility.
                   (default is the current time in ISO-8601 format)]),
      [if test "$enableval" = "yes"; then
         BUILD_TIMESTAMP=`date -u +%Y-%m-%dT%H:%M+0000 2>/dev/null || date`
       else
         BUILD_TIMESTAMP="$enableval"
       fi],
      [BUILD_TIMESTAMP="<none>"])
 AC_SUBST(BUILD_TIMESTAMP)
 AC_DEFINE_UNQUOTED(BUILD_TIMESTAMP, "$BUILD_TIMESTAMP",
                    [The time this package was configured for a build])
 
 
 # And create the files.
 AC_CONFIG_FILES([
 Makefile
 m4/Makefile
 compat/Makefile
 mpi/Makefile
 cipher/Makefile
 random/Makefile
 doc/Makefile
 src/Makefile
 src/gcrypt.h
 src/libgcrypt-config
 src/libgcrypt.pc
 src/versioninfo.rc
 tests/Makefile
 ])
 AC_CONFIG_FILES([tests/hashtest-256g], [chmod +x tests/hashtest-256g])
 AC_CONFIG_FILES([tests/basic-disable-all-hwf], [chmod +x tests/basic-disable-all-hwf])
 AC_OUTPUT
 
 
 detection_module="${GCRYPT_HWF_MODULES%.lo}"
 test -n "$detection_module" || detection_module="none"
 
 # Give some feedback
 GCRY_MSG_SHOW([],[])
 GCRY_MSG_SHOW([Libgcrypt],[v${VERSION} has been configured as follows:])
 GCRY_MSG_SHOW([],[])
 GCRY_MSG_SHOW([Platform:                 ],[$PRINTABLE_OS_NAME ($host)])
 GCRY_MSG_SHOW([Hardware detection module:],[$detection_module])
 GCRY_MSG_WRAP([Enabled cipher algorithms:],[$enabled_ciphers])
 GCRY_MSG_WRAP([Enabled digest algorithms:],[$enabled_digests])
 GCRY_MSG_WRAP([Enabled kdf algorithms:   ],[$enabled_kdfs])
 GCRY_MSG_WRAP([Enabled pubkey algorithms:],[$enabled_pubkey_ciphers])
 GCRY_MSG_SHOW([Random number generator:  ],[$random])
 GCRY_MSG_SHOW([Try using jitter entropy: ],[$jentsupport])
 GCRY_MSG_SHOW([Using linux capabilities: ],[$use_capabilities])
 GCRY_MSG_SHOW([Try using Padlock crypto: ],[$padlocksupport])
 GCRY_MSG_SHOW([Try using AES-NI crypto:  ],[$aesnisupport])
 GCRY_MSG_SHOW([Try using Intel SHAEXT:   ],[$shaextsupport])
 GCRY_MSG_SHOW([Try using Intel PCLMUL:   ],[$pclmulsupport])
 GCRY_MSG_SHOW([Try using Intel SSE4.1:   ],[$sse41support])
 GCRY_MSG_SHOW([Try using DRNG (RDRAND):  ],[$drngsupport])
 GCRY_MSG_SHOW([Try using Intel AVX:      ],[$avxsupport])
 GCRY_MSG_SHOW([Try using Intel AVX2:     ],[$avx2support])
 GCRY_MSG_SHOW([Try using ARM NEON:       ],[$neonsupport])
 GCRY_MSG_SHOW([Try using ARMv8 crypto:   ],[$armcryptosupport])
 GCRY_MSG_SHOW([Try using PPC crypto:     ],[$ppccryptosupport])
 GCRY_MSG_SHOW([],[])
 
 if test "x${gpg_config_script_warn}" != x; then
 cat <<G10EOF
         Mismatches between the target platform and the to
         be used libraries have been been detected for:
          ${gpg_config_script_warn}
         Please check above for warning messages.
 
 G10EOF
 fi
 
 if test "$gcry_cv_gcc_attribute_aligned" != "yes" ; then
 cat <<G10EOF
    Please not that your compiler does not support the GCC style
    aligned attribute. Using this software may evoke bus errors.
 
 G10EOF
 fi
 
 if test -n "$gpl"; then
   echo "Please note that you are building a version of Libgcrypt with"
   echo "  $gpl"
   echo "included.  These parts are licensed under the GPL and thus the"
   echo "use of this library has to comply with the conditions of the GPL."
   echo ""
 fi