diff --git a/configure.ac b/configure.ac index c4d7e5f9..efcbc521 100644 --- a/configure.ac +++ b/configure.ac @@ -1,2079 +1,2078 @@ # 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, 2013 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 . # (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_version_major, [1]) m4_define(mym4_version_minor, [6]) m4_define(mym4_version_micro, [4]) # Below is m4 magic to extract and compute the revision number, the # decimalized short revision number, a beta version string, and a flag # indicating a development version (mym4_isgit). Note that the m4 # processing is done by autoconf and not during the configure run. m4_define(mym4_version, [mym4_version_major.mym4_version_minor.mym4_version_micro]) m4_define([mym4_revision], m4_esyscmd([git rev-parse --short HEAD | tr -d '\n\r'])) m4_define([mym4_revision_dec], m4_esyscmd_s([echo $((0x$(echo ]mym4_revision[|head -c 4)))])) m4_define([mym4_betastring], m4_esyscmd_s([git describe --match 'libgcrypt-[0-9].*[0-9]' --long|\ awk -F- '$3!=0{print"-beta"$3}'])) m4_define([mym4_isgit],m4_if(mym4_betastring,[],[no],[yes])) m4_define([mym4_full_version],[mym4_version[]mym4_betastring]) AC_INIT([libgcrypt],[mym4_full_version],[http://bugs.gnupg.org]) # LT Version numbers, remember to change them just *before* a release. # (Interfaces removed: CURRENT++, AGE=0, REVISION=0) # (Interfaces added: CURRENT++, AGE++, REVISION=0) # (No interfaces changed: REVISION++) LIBGCRYPT_LT_CURRENT=20 LIBGCRYPT_LT_AGE=0 LIBGCRYPT_LT_REVISION=3 # If the API is changed in an incompatible way: increment the next counter. # # 1.6: ABI and API change but the change is to most users irrelevant # and thus the API version number has not been incremented. LIBGCRYPT_CONFIG_API_VERSION=1 # If you change the required gpg-error version, please remove # unnecessary error code defines in src/gcrypt-int.h. NEED_GPG_ERROR_VERSION=1.11 PACKAGE=$PACKAGE_NAME VERSION=$PACKAGE_VERSION AC_CONFIG_AUX_DIR([build-aux]) AC_CONFIG_SRCDIR([src/libgcrypt.vers]) AM_INIT_AUTOMAKE([serial-tests dist-bzip2]) AC_CONFIG_HEADER(config.h) AC_CONFIG_MACRO_DIR([m4]) AC_CONFIG_LIBOBJ_DIR([compat]) AC_CANONICAL_HOST AM_MAINTAINER_MODE AM_SILENT_RULES AH_TOP([ #ifndef _GCRYPT_CONFIG_H_INCLUDED #define _GCRYPT_CONFIG_H_INCLUDED /* Enable gpg-error's strerror macro for W32CE. */ #define GPG_ERR_ENABLE_ERRNO_MACROS 1 ]) AH_BOTTOM([ #define _GCRYPT_IN_LIBGCRYPT 1 /* If the configure check for endianness has been disabled, get it from OS macros. This is intended for making fat binary builds on OS X. */ #ifdef DISABLED_ENDIAN_CHECK # if defined(__BIG_ENDIAN__) # define WORDS_BIGENDIAN 1 # elif defined(__LITTLE_ENDIAN__) # undef WORDS_BIGENDIAN # else # error "No endianness found" # endif #endif /*DISABLED_ENDIAN_CHECK*/ /* We basically use the original Camellia source. Make sure the symbols properly prefixed. */ #define CAMELLIA_EXT_SYM_PREFIX _gcry_ #endif /*_GCRYPT_CONFIG_H_INCLUDED*/ ]) AH_VERBATIM([_REENTRANT], [/* To allow the use of Libgcrypt in multithreaded programs we have to use special features from the library. */ #ifndef _REENTRANT # define _REENTRANT 1 #endif ]) AC_SUBST(LIBGCRYPT_LT_CURRENT) AC_SUBST(LIBGCRYPT_LT_AGE) AC_SUBST(LIBGCRYPT_LT_REVISION) AC_SUBST(PACKAGE) AC_SUBST(VERSION) AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of this package]) AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version of this package]) VERSION_NUMBER=m4_esyscmd(printf "0x%02x%02x%02x" mym4_version_major \ mym4_version_minor mym4_version_micro) AC_SUBST(VERSION_NUMBER) ###################### ## 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, $missing_dir) AC_PROG_CC AC_PROG_CPP AM_PROG_CC_C_O AM_PROG_AS AC_ISC_POSIX AC_PROG_INSTALL AC_PROG_AWK AC_GNU_SOURCE # We need to compile and run a program on the build machine. A # comment in libgpg-error says that the AC_PROG_CC_FOR_BUILD macro in # the AC archive is broken for autoconf 2.57. Given that there is no # newer version of that macro, we assume that it is also broken for # autoconf 2.61 and thus we use a simple but usually sufficient # approach. AC_MSG_CHECKING(for cc for build) if test "$cross_compiling" = "yes"; then CC_FOR_BUILD="${CC_FOR_BUILD-cc}" else CC_FOR_BUILD="${CC_FOR_BUILD-$CC}" fi AC_MSG_RESULT($CC_FOR_BUILD) AC_ARG_VAR(CC_FOR_BUILD,[build system C compiler]) 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" 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 md4 md5 rmd160 sha1 sha256" available_digests_64="sha512 tiger whirlpool stribog" enabled_digests="" # Definitions for kdfs (optional ones) available_kdfs="s2k pkdf2" available_kdfs_64="scrypt" enabled_kdfs="" # Definitions for random modules. available_random_modules="linux egd unix" auto_random_modules="$available_random_modules" # Supported thread backends. LIBGCRYPT_THREAD_MODULES="" # Other definitions. print_egd_notice=no have_w32_system=no have_w32ce_system=no have_pthread=no # Setup some stuff depending on host. case "${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="$CFLAGS -w" fi ;; m68k-atari-mint) ;; *) ;; esac if test "$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 # # Figure out the name of the random device # case "${host}" in *-openbsd*) NAME_OF_DEV_RANDOM="/dev/srandom" NAME_OF_DEV_URANDOM="/dev/urandom" ;; *) NAME_OF_DEV_RANDOM="/dev/random" NAME_OF_DEV_URANDOM="/dev/urandom" ;; esac AC_ARG_ENABLE(endian-check, AC_HELP_STRING([--disable-endian-check], [disable the endian check and trust the OS provided macros]), endiancheck=$enableval,endiancheck=yes) if test x"$endiancheck" = xyes ; then AC_C_BIGENDIAN else AC_DEFINE(DISABLED_ENDIAN_CHECK,1,[configure did not test for endianess]) fi AC_CHECK_SIZEOF(unsigned short, 2) AC_CHECK_SIZEOF(unsigned int, 4) AC_CHECK_SIZEOF(unsigned long, 4) AC_CHECK_SIZEOF(unsigned long long, 0) AC_TYPE_UINTPTR_T if test "$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 # 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_WARN([No 64-bit types. Disabling TIGER/192, SCRYPT, SHA-384, \ SHA-512 and GOST R 34.11-12]) else available_digests="$available_digests $available_digests_64" available_kdfs="$available_kdfs $available_kdfs_64" fi # If not specified otherwise, all available algorithms will be # included. default_ciphers="$available_ciphers" default_pubkey_ciphers="$available_pubkey_ciphers" default_digests="$available_digests" default_kdfs="$available_kdfs" # 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, AC_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, AC_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, AC_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, AC_HELP_STRING([--enable-kdfs=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, AC_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, "$egd_socket_name", [Define if you don't want the default EGD socket name. For details see cipher/rndegd.c]) # Implementation of the --enable-random-daemon AC_MSG_CHECKING([whether the experimental random daemon is requested]) AC_ARG_ENABLE([random-daemon], AC_HELP_STRING([--enable-random-daemon], [Build and support the experimental gcryptrnd]), [use_random_daemon=$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$use_random_daemon = xyes) # Implementation of --disable-asm. AC_MSG_CHECKING([whether MPI assembler modules are requested]) AC_ARG_ENABLE([asm], AC_HELP_STRING([--disable-asm], [Disable MPI assembler modules]), [try_asm_modules=$enableval], [try_asm_modules=yes]) AC_MSG_RESULT($try_asm_modules) # Implementation of the --enable-m-guard switch. AC_MSG_CHECKING([whether memory guard is requested]) AC_ARG_ENABLE(m-guard, AC_HELP_STRING([--enable-m-guard], [Enable memory guard facility]), [use_m_guard=$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, AC_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, $large_data_tests) # Implementation of the --with-capabilities switch. # Check whether we want to use Linux capabilities AC_MSG_CHECKING([whether use of capabilities is requested]) AC_ARG_WITH(capabilities, AC_HELP_STRING([--with-capabilities], [Use linux capabilities [default=no]]), [use_capabilities="$withval"],[use_capabilities=no]) AC_MSG_RESULT($use_capabilities) # Implementation of the --enable-hmac-binary-check. AC_MSG_CHECKING([whether a HMAC binary check is requested]) AC_ARG_ENABLE(hmac-binary-check, AC_HELP_STRING([--enable-hmac-binary-check], [Enable library integrity check]), [use_hmac_binary_check=$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-padlock-support switch. AC_MSG_CHECKING([whether padlock support is requested]) AC_ARG_ENABLE(padlock-support, AC_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, AC_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-pclmul-support switch. AC_MSG_CHECKING([whether PCLMUL support is requested]) AC_ARG_ENABLE(pclmul-support, AC_HELP_STRING([--disable-pclmul-support], [Disable support for the Intel PCLMUL instructions]), pclmulsupport=$enableval,pclmulsupport=yes) AC_MSG_RESULT($pclmulsupport) # Implementation of the --disable-drng-support switch. AC_MSG_CHECKING([whether DRNG support is requested]) AC_ARG_ENABLE(drng-support, AC_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, AC_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, AC_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, AC_HELP_STRING([--disable-neon-support], [Disable support for the ARM NEON instructions]), neonsupport=$enableval,neonsupport=yes) AC_MSG_RESULT($neonsupport) # Implementation of the --disable-O-flag-munging switch. AC_MSG_CHECKING([whether a -O flag munging is requested]) AC_ARG_ENABLE([O-flag-munging], AC_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 "$enable_o_flag_munging" = "yes") # Implementation of the --disable-amd64-as-feature-detection switch. AC_MSG_CHECKING([whether to enable AMD64 as(1) feature detection]) AC_ARG_ENABLE(amd64-as-feature-detection, AC_HELP_STRING([--disable-amd64-as-feature-detection], [Disable the auto-detection of AMD64 as(1) features]), amd64_as_feature_detection=$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 "${host}" in *-*-linux*) have_ld_version_script=yes ;; *-*-gnu*) have_ld_version_script=yes ;; esac AC_ARG_ENABLE([ld-version-script], AC_HELP_STRING([--enable-ld-version-script], [enable/disable use of linker version script. (default is system dependent)]), [have_ld_version_script=$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$GPG_ERROR_LIBS" = "x"; then AC_MSG_ERROR([libgpg-error is needed. See ftp://ftp.gnupg.org/gcrypt/libgpg-error/ .]) fi AC_DEFINE(GPG_ERR_SOURCE_DEFAULT, GPG_ERR_SOURCE_GCRYPT, [The default error source for libgcrypt.]) # # Check whether the GNU Pth library is available. We require this # to build the optional gcryptrnd program. # AC_ARG_WITH(pth-prefix, AC_HELP_STRING([--with-pth-prefix=PFX], [prefix where GNU Pth is installed (optional)]), pth_config_prefix="$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 `$PTH_CONFIG --libs --all`" AC_DEFINE(USE_GNU_PTH, 1, [Defined if the GNU Portable Thread Library should be used]) AC_DEFINE(HAVE_PTH, 1, [Defined if the GNU Pth is available]) fi fi fi AC_SUBST(PTH_CFLAGS) AC_SUBST(PTH_LIBS) # # See which thread system we have # # Windows has always thread support; thus we don't bother to test for # it as it may lead to false results when cross building. if test "$have_w32_system" = yes; then AC_DEFINE([USE_WINDOWS_THREADS], [1]) LIBTHREAD= LTLIBTHREAD= LIBMULTITHREAD= LTLIBMULTITHREAD= THREADLIB_CPPFLAGS="" AC_SUBST([LIBTHREAD]) AC_SUBST([LTLIBTHREAD]) AC_SUBST([LIBMULTITHREAD]) AC_SUBST([LTLIBMULTITHREAD]) else gl_LOCK 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) INSERT_SYS_SELECT_H= if test x"$ac_cv_header_sys_select_h" = xyes; then INSERT_SYS_SELECT_H=" include " fi AC_SUBST(INSERT_SYS_SELECT_H) ########################################## #### Checks for typedefs, structures, #### #### and compiler characteristics. #### ########################################## AC_C_CONST AC_C_INLINE AC_TYPE_SIZE_T AC_TYPE_SIGNAL AC_DECL_SYS_SIGLIST AC_TYPE_PID_T GNUPG_CHECK_TYPEDEF(byte, HAVE_BYTE_TYPEDEF) GNUPG_CHECK_TYPEDEF(ushort, HAVE_USHORT_TYPEDEF) GNUPG_CHECK_TYPEDEF(ulong, HAVE_ULONG_TYPEDEF) GNUPG_CHECK_TYPEDEF(u16, HAVE_U16_TYPEDEF) GNUPG_CHECK_TYPEDEF(u32, HAVE_U32_TYPEDEF) gl_TYPE_SOCKLEN_T case "${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 "$gcry_cv_have_builtin_bswap64" = "yes" ; then AC_DEFINE(HAVE_BUILTIN_BSWAP64,1, [Defined if compiler has '__builtin_bswap64' intrinsic]) fi # # Check for VLA support (variable length arrays). # AC_CACHE_CHECK(whether the variable length arrays are supported, [gcry_cv_have_vla], [gcry_cv_have_vla=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[void f1(char *, int); char foo(int i) { char b[(i < 0 ? 0 : i) + 1]; f1(b, sizeof b); return b[0];}]])], [gcry_cv_have_vla=yes])]) if test "$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="$CFLAGS -fvisibility=hidden" fi # # Check whether the compiler supports the GCC style aligned attribute # AC_CACHE_CHECK([whether the GCC style aligned attribute is supported], [gcry_cv_gcc_attribute_aligned], [gcry_cv_gcc_attribute_aligned=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[struct { int a; } foo __attribute__ ((aligned (16)));]])], [gcry_cv_gcc_attribute_aligned=yes])]) if test "$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 '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(void) { __asm__ volatile("":::"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(void) { asm volatile("":::"memory"); }]])], [gcry_cv_have_asm_volatile_memory=yes])]) fi if test "$gcry_cv_have_asm_volatile_memory" = "yes" ; then AC_DEFINE(HAVE_GCC_ASM_VOLATILE_MEMORY,1, [Define if inline asm memory barrier is supported]) fi # # Check whether GCC assembler supports features needed for our ARM # implementations. This needs to be done before setting up the # assembler stuff. # AC_CACHE_CHECK([whether GCC assembler is compatible for ARM assembly implementations], [gcry_cv_gcc_arm_platform_as_ok], [gcry_cv_gcc_arm_platform_as_ok=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[__asm__( /* Test if assembler supports UAL syntax. */ ".syntax unified\n\t" ".arm\n\t" /* our assembly code is in ARM mode */ /* Following causes error if assembler ignored '.syntax unified'. */ "asmfunc:\n\t" "add %r0, %r0, %r4, ror #12;\n\t" /* Test if '.type' and '.size' are supported. */ ".size asmfunc,.-asmfunc;\n\t" ".type asmfunc,%function;\n\t" );]])], [gcry_cv_gcc_arm_platform_as_ok=yes])]) if test "$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 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, AC_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" pclmulsupport="n/a" avxsupport="n/a" avx2support="n/a" padlocksupport="n/a" drngsupport="n/a" fi if test "$mpi_cpu_arch" != "arm" ; then neonsupport="n/a" fi ############################################# #### #### #### Platform specific compiler checks. #### #### #### ############################################# # # Check whether GCC inline assembler supports SSSE3 instructions # This is required for the AES-NI instructions. # AC_CACHE_CHECK([whether GCC inline assembler supports SSSE3 instructions], [gcry_cv_gcc_inline_asm_ssse3], [if test "$mpi_cpu_arch" != "x86" ; then gcry_cv_gcc_inline_asm_ssse3="n/a" else gcry_cv_gcc_inline_asm_ssse3=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[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):); }]])], [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" ; then gcry_cv_gcc_inline_asm_pclmul="n/a" else gcry_cv_gcc_inline_asm_pclmul=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[void a(void) { __asm__("pclmulqdq \$0, %%xmm1, %%xmm3\n\t":::"cc"); }]])], [gcry_cv_gcc_inline_asm_pclmul=yes]) fi]) if test "$gcry_cv_gcc_inline_asm_pclmul" = "yes" ; then AC_DEFINE(HAVE_GCC_INLINE_ASM_PCLMUL,1, [Defined if inline assembler supports PCLMUL instructions]) fi # # Check whether GCC inline assembler supports AVX instructions # AC_CACHE_CHECK([whether GCC inline assembler supports AVX instructions], [gcry_cv_gcc_inline_asm_avx], [if test "$mpi_cpu_arch" != "x86" ; then gcry_cv_gcc_inline_asm_avx="n/a" else gcry_cv_gcc_inline_asm_avx=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[void a(void) { __asm__("xgetbv; vaesdeclast (%[mem]),%%xmm0,%%xmm7\n\t"::[mem]"r"(0):); }]])], [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" ; then gcry_cv_gcc_inline_asm_avx2="n/a" else gcry_cv_gcc_inline_asm_avx2=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[void a(void) { __asm__("xgetbv; vpbroadcastb %%xmm7,%%ymm1\n\t":::"cc"); }]])], [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" ; then gcry_cv_gcc_inline_asm_bmi2="n/a" else gcry_cv_gcc_inline_asm_bmi2=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[void a(void) { __asm__("rorxl \$23, %%eax, %%edx\\n\\t":::"memory"); }]])], [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 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" ; then gcry_cv_gcc_amd64_platform_as_ok="n/a" else gcry_cv_gcc_amd64_platform_as_ok=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[__asm__( /* Test if '.type' and '.size' are supported. */ /* These work only on ELF targets. */ /* TODO: add COFF (mingw64, cygwin64) support to assembly * implementations. Mingw64/cygwin64 also require additional * work because they use different calling convention. */ "asmfunc:\n\t" ".size asmfunc,.-asmfunc;\n\t" ".type asmfunc,@function;\n\t" );]])], [gcry_cv_gcc_amd64_platform_as_ok=yes]) fi]) if test "$gcry_cv_gcc_amd64_platform_as_ok" = "yes" ; then AC_DEFINE(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS,1, [Defined if underlying assembler is compatible with amd64 assembly implementations]) fi fi # # Check whether GCC assembler supports features needed for assembly # implementations that use Intel syntax # AC_CACHE_CHECK([whether GCC assembler is compatible for Intel syntax assembly implementations], [gcry_cv_gcc_platform_as_ok_for_intel_syntax], [if test "$mpi_cpu_arch" != "x86" ; then gcry_cv_gcc_platform_as_ok_for_intel_syntax="n/a" else gcry_cv_gcc_platform_as_ok_for_intel_syntax=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[__asm__( ".intel_syntax noprefix\n\t" "pxor xmm1, xmm7;\n\t" /* Intel syntax implementation also use GAS macros, so check * for them here. */ "VAL_A = xmm4\n\t" "VAL_B = xmm2\n\t" ".macro SET_VAL_A p1\n\t" " VAL_A = \\\\p1 \n\t" ".endm\n\t" ".macro SET_VAL_B p1\n\t" " VAL_B = \\\\p1 \n\t" ".endm\n\t" "vmovdqa VAL_A, VAL_B;\n\t" "SET_VAL_A eax\n\t" "SET_VAL_B ebp\n\t" "add VAL_A, VAL_B;\n\t" "add VAL_B, 0b10101;\n\t" );]])], [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" ; 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" ; then gcry_cv_gcc_inline_asm_neon="n/a" else gcry_cv_gcc_inline_asm_neon=no AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[__asm__( ".syntax unified\n\t" ".thumb\n\t" ".fpu neon\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" ); ]])], [gcry_cv_gcc_inline_asm_neon=yes]) fi]) if test "$gcry_cv_gcc_inline_asm_neon" = "yes" ; then AC_DEFINE(HAVE_GCC_INLINE_ASM_NEON,1, [Defined if inline assembler supports NEON instructions]) fi ####################################### #### Checks for library functions. #### ####################################### AC_FUNC_VPRINTF # We have replacements for these in src/missing-string.c AC_CHECK_FUNCS(stpcpy strcasecmp) # We have replacements for these in src/g10lib.h AC_CHECK_FUNCS(strtoul memmove stricmp atexit raise) # Other checks AC_CHECK_FUNCS(strerror rand mmap getpagesize sysconf waitpid wait4) AC_CHECK_FUNCS(gettimeofday getrusage gethrtime clock_gettime syslog) AC_CHECK_FUNCS(fcntl ftruncate flockfile) GNUPG_CHECK_MLOCK # # Replacement functions. # AC_REPLACE_FUNCS([getpid clock]) # # Check wether it is necessary to link against libdl. # DL_LIBS="" if test "$use_hmac_binary_check" = yes ; then _gcry_save_libs="$LIBS" LIBS="" AC_SEARCH_LIBS(dlopen, c dl,,,) DL_LIBS=$LIBS LIBS="$_gcry_save_libs" LIBGCRYPT_CONFIG_LIBS="${LIBGCRYPT_CONFIG_LIBS} ${DL_LIBS}" fi AC_SUBST(DL_LIBS) # # Check whether we need to link with a pthreads library. # if test "x$LIBTHREAD" != x; then LIBGCRYPT_CONFIG_LIBS="${LIBGCRYPT_CONFIG_LIBS} ${LIBTHREAD}" fi # # Check whether we can use Linux capabilities as requested. # if test "$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, AC_HELP_STRING([--disable-optimization], [disable compiler optimization]), [if test $enableval = no ; then CFLAGS=`echo $CFLAGS | sed 's/-O[[0-9]]//'` fi]) # CFLAGS mangling when using gcc. if test "$GCC" = yes; then 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 "$gcry_cv_gcc_inline_asm_ssse3" != "yes" ; then aesnisupport="no (unsupported by compiler)" fi fi if test x"$pclmulsupport" = xyes ; then if test "$gcry_cv_gcc_inline_asm_pclmul" != "yes" ; then pclmulsupport="no (unsupported by compiler)" fi fi if test x"$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 "$gcry_cv_gcc_inline_asm_neon" != "yes" ; then neonsupport="no (unsupported by compiler)" fi fi if test x"$aesnisupport" = xyes ; then AC_DEFINE(ENABLE_AESNI_SUPPORT, 1, [Enable support for Intel AES-NI instructions.]) fi if test x"$pclmulsupport" = xyes ; then AC_DEFINE(ENABLE_PCLMUL_SUPPORT, 1, [Enable support for Intel PCLMUL instructions.]) fi if test x"$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"$padlocksupport" = xyes ; then AC_DEFINE(ENABLE_PADLOCK_SUPPORT, 1, [Enable support for the PadLock engine.]) fi if test x"$drngsupport" = xyes ; then AC_DEFINE(ENABLE_DRNG_SUPPORT, 1, [Enable support for Intel DRNG (RDRAND instruction).]) fi # 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]) 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]) 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="$GCRYPT_CIPHERS rijndael-amd64.lo" ;; arm*-*-*) # Build with the assembly implementation GCRYPT_CIPHERS="$GCRYPT_CIPHERS rijndael-arm.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="$GCRYPT_CIPHERS twofish-amd64.lo" ;; arm*-*-*) # Build with the assembly implementation GCRYPT_CIPHERS="$GCRYPT_CIPHERS twofish-arm.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="$GCRYPT_CIPHERS camellia-arm.lo" ;; esac if test x"$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(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-ecdsa.lo ecc-eddsa.lo ecc-gost.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]) 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(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(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" ;; 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="$GCRYPT_DIGESTS sha512-avx2-bmi2-amd64.lo" ;; esac if test x"$neonsupport" = xyes ; then # Build with the NEON implementation GCRYPT_DIGESTS="$GCRYPT_DIGESTS sha512-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="$GCRYPT_DIGESTS whirlpool.lo" AC_DEFINE(USE_WHIRLPOOL, 1, [Defined if this module should be included]) fi # rmd160 and sha1 should be included always. GCRYPT_DIGESTS="$GCRYPT_DIGESTS rmd160.lo sha1.lo" AC_DEFINE(USE_RMD160, 1, [Defined if this module should be included]) 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" ;; esac 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.]) print_egd_notice=yes 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="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]) ;; arm) AC_DEFINE(HAVE_CPU_ARCH_ARM, 1, [Defined for ARM platforms]) GCRYPT_HWF_MODULES="hwf-arm.lo" ;; esac AC_SUBST([GCRYPT_HWF_MODULES]) # # Provide information about the build. # BUILD_REVISION="mym4_revision" AC_SUBST(BUILD_REVISION) AC_DEFINE_UNQUOTED(BUILD_REVISION, "$BUILD_REVISION", [GIT commit id revision used to build this package]) changequote(,)dnl BUILD_FILEVERSION=`echo "$VERSION" | sed 's/\([0-9.]*\).*/\1./;s/\./,/g'` changequote([,])dnl BUILD_FILEVERSION="${BUILD_FILEVERSION}mym4_revision_dec" AC_SUBST(BUILD_FILEVERSION) BUILD_TIMESTAMP=`date -u +%Y-%m-%dT%H:%M+0000 2>/dev/null || date` AC_SUBST(BUILD_TIMESTAMP) AC_DEFINE_UNQUOTED(BUILD_TIMESTAMP, "$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/versioninfo.rc tests/Makefile ]) AC_CONFIG_FILES([tests/hashtest-256g], [chmod +x tests/hashtest-256g]) 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: ],[$random]) GCRY_MSG_SHOW([Using linux capabilities: ],[$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 PCLMUL: ],[$pclmulsupport]) GCRY_MSG_SHOW([Try using DRNG (RDRAND): ],[$drngsupport]) GCRY_MSG_SHOW([Try using Intel AVX: ],[$avxsupport]) GCRY_MSG_SHOW([Try using Intel AVX2: ],[$avx2support]) GCRY_MSG_SHOW([Try using ARM NEON: ],[$neonsupport]) GCRY_MSG_SHOW([],[]) if test "$print_egd_notice" = "yes"; then cat < to allow them to be added to the baseline version of the code. ALTERNATIVELY, the code may be distributed under the terms of the GNU Lesser General Public License, version 2.1 or any later version published by the Free Software Foundation, in which case the provisions of the GNU LGPL are required INSTEAD OF the above restrictions. Although not required under the terms of the LGPL, it would still be nice if you could make any changes available to the author to allow a consistent code base to be maintained. */ /************************************************************************* The above alternative was changed from GPL to LGPL on 2007-08-22 with permission from Peter Gutmann: ========== From: pgut001 Subject: Re: LGPL for the windows entropy gatherer To: wk@gnupg.org Date: Wed, 22 Aug 2007 03:05:42 +1200 Hi, >As of now libgcrypt is GPL under Windows due to that module and some people >would really like to see it under LGPL too. Can you do such a license change >to LGPL version 2? Note that LGPL give the user the option to relicense it >under GPL, so the change would be pretty easy and backwar compatible. Sure. I assumed that since GPG was GPLd, you'd prefer the GPL for the entropy code as well, but Ian asked for LGPL as an option so as of the next release I'll have LGPL in there. You can consider it to be retroactive, so your current version will be LGPLd as well. Peter. ========== From: pgut001 Subject: Re: LGPL for the windows entropy gatherer To: wk@gnupg.org Date: Wed, 22 Aug 2007 20:50:08 +1200 >Would you mind to extend this also to the Unix entropy gatherer which is >still used on systems without /dev/random and when EGD is not installed? That >would be the last GPLed piece in Libgcrypt. Sure, it covers the entire entropy-gathering subsystem. Peter. ========= */ /* General includes */ #include #include #include #include /* OS-specific includes */ #ifdef __osf__ /* Somewhere in the morass of system-specific cruft which OSF/1 pulls in * via the following includes are various endianness defines, so we * undefine the cryptlib ones, which aren't really needed for this module * anyway */ #undef BIG_ENDIAN #undef LITTLE_ENDIAN #endif /* __osf__ */ #include #include #include #ifndef __QNX__ #include #include #endif /* __QNX__ */ #include /* SCO and SunOS need this before resource.h */ #ifndef __QNX__ #include #endif /* __QNX__ */ #if defined( _AIX ) || defined( __QNX__ ) #include #endif /* _AIX */ #ifndef __QNX__ #include #include #include #endif /* __QNX__ */ #include #include /* Verschiedene komische Typen */ #if defined( __hpux ) && ( OS_VERSION == 9 ) #include #endif /* __hpux 9.x, after that it's in unistd.h */ #include /* #include */ #ifdef __QNX__ #include #include #endif /* __QNX__ */ #include #include "types.h" /* for byte and u32 typedefs */ #include "g10lib.h" #include "rand-internal.h" #ifndef EAGAIN #define EAGAIN EWOULDBLOCK #endif #ifndef STDIN_FILENO #define STDIN_FILENO 0 #endif #ifndef STDOUT_FILENO #define STDOUT_FILENO 1 #endif +#ifndef STDERR_FILENO +#define STDERR_FILENO 2 +#endif #define GATHER_BUFSIZE 49152 /* Usually about 25K are filled */ /* The structure containing information on random-data sources. Each * record contains the source and a relative estimate of its usefulness * (weighting) which is used to scale the number of kB of output from the * source (total = data_bytes / usefulness). Usually the weighting is in the * range 1-3 (or 0 for especially useless sources), resulting in a usefulness * rating of 1...3 for each kB of source output (or 0 for the useless * sources). * * If the source is constantly changing (certain types of network statistics * have this characteristic) but the amount of output is small, the weighting * is given as a negative value to indicate that the output should be treated * as if a minimum of 1K of output had been obtained. If the source produces * a lot of output then the scale factor is fractional, resulting in a * usefulness rating of < 1 for each kB of source output. * * In order to provide enough randomness to satisfy the requirements for a * slow poll, we need to accumulate at least 20 points of usefulness (a * typical system should get about 30 points). * * Some potential options are missed out because of special considerations. * pstat -i and pstat -f can produce amazing amounts of output (the record * is 600K on an Oracle server) which floods the buffer and doesn't yield * anything useful (apart from perhaps increasing the entropy of the vmstat * output a bit), so we don't bother with this. pstat in general produces * quite a bit of output, but it doesn't change much over time, so it gets * very low weightings. netstat -s produces constantly-changing output but * also produces quite a bit of it, so it only gets a weighting of 2 rather * than 3. The same holds for netstat -in, which gets 1 rather than 2. * * Some binaries are stored in different locations on different systems so * alternative paths are given for them. The code sorts out which one to * run by itself, once it finds an exectable somewhere it moves on to the * next source. The sources are arranged roughly in their order of * usefulness, occasionally sources which provide a tiny amount of * relatively useless data are placed ahead of ones which provide a large * amount of possibly useful data because another 100 bytes can't hurt, and * it means the buffer won't be swamped by one or two high-output sources. * All the high-output sources are clustered towards the end of the list * for this reason. Some binaries are checked for in a certain order, for * example under Slowaris /usr/ucb/ps understands aux as an arg, but the * others don't. Some systems have conditional defines enabling alternatives * to commands which don't understand the usual options but will provide * enough output (in the form of error messages) to look like they're the * real thing, causing alternative options to be skipped (we can't check the * return either because some commands return peculiar, non-zero status even * when they're working correctly). * * In order to maximise use of the buffer, the code performs a form of run- * length compression on its input where a repeated sequence of bytes is * replaced by the occurrence count mod 256. Some commands output an awful * lot of whitespace, this measure greatly increases the amount of data we * can fit in the buffer. * * When we scale the weighting using the SC() macro, some preprocessors may * give a division by zero warning for the most obvious expression * 'weight ? 1024 / weight : 0' (and gcc 2.7.2.2 dies with a division by zero * trap), so we define a value SC_0 which evaluates to zero when fed to * '1024 / SC_0' */ #define SC( weight ) ( 1024 / weight ) /* Scale factor */ #define SC_0 16384 /* SC( SC_0 ) evaluates to 0 */ static struct RI { const char *path; /* Path to check for existence of source */ const char *arg; /* Args for source */ const int usefulness; /* Usefulness of source */ FILE *pipe; /* Pipe to source as FILE * */ int pipeFD; /* Pipe to source as FD */ pid_t pid; /* pid of child for waitpid() */ int length; /* Quantity of output produced */ const int hasAlternative; /* Whether source has alt.location */ } dataSources[] = { { "/bin/vmstat", "-s", SC(-3), NULL, 0, 0, 0, 1 }, { "/usr/bin/vmstat", "-s", SC(-3), NULL, 0, 0, 0, 0}, { "/bin/vmstat", "-c", SC(-3), NULL, 0, 0, 0, 1 }, { "/usr/bin/vmstat", "-c", SC(-3), NULL, 0, 0, 0, 0}, { "/usr/bin/pfstat", NULL, SC(-2), NULL, 0, 0, 0, 0}, { "/bin/vmstat", "-i", SC(-2), NULL, 0, 0, 0, 1 }, { "/usr/bin/vmstat", "-i", SC(-2), NULL, 0, 0, 0, 0}, { "/usr/ucb/netstat", "-s", SC(2), NULL, 0, 0, 0, 1 }, { "/usr/bin/netstat", "-s", SC(2), NULL, 0, 0, 0, 1 }, { "/usr/sbin/netstat", "-s", SC(2), NULL, 0, 0, 0, 1}, { "/usr/etc/netstat", "-s", SC(2), NULL, 0, 0, 0, 0}, { "/usr/bin/nfsstat", NULL, SC(2), NULL, 0, 0, 0, 0}, { "/usr/ucb/netstat", "-m", SC(-1), NULL, 0, 0, 0, 1 }, { "/usr/bin/netstat", "-m", SC(-1), NULL, 0, 0, 0, 1 }, { "/usr/sbin/netstat", "-m", SC(-1), NULL, 0, 0, 0, 1 }, { "/usr/etc/netstat", "-m", SC(-1), NULL, 0, 0, 0, 0 }, { "/bin/netstat", "-in", SC(-1), NULL, 0, 0, 0, 1 }, { "/usr/ucb/netstat", "-in", SC(-1), NULL, 0, 0, 0, 1 }, { "/usr/bin/netstat", "-in", SC(-1), NULL, 0, 0, 0, 1 }, { "/usr/sbin/netstat", "-in", SC(-1), NULL, 0, 0, 0, 1}, { "/usr/etc/netstat", "-in", SC(-1), NULL, 0, 0, 0, 0}, { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.7.1.0", SC(-1), NULL, 0, 0, 0, 0 }, /* UDP in */ { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.7.4.0", SC(-1), NULL, 0, 0, 0, 0 }, /* UDP out */ { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.4.3.0", SC(-1), NULL, 0, 0, 0, 0 }, /* IP ? */ { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.6.10.0", SC(-1), NULL, 0, 0, 0, 0 }, /* TCP ? */ { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.6.11.0", SC(-1), NULL, 0, 0, 0, 0 }, /* TCP ? */ { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.6.13.0", SC(-1), NULL, 0, 0, 0, 0 }, /* TCP ? */ { "/usr/bin/mpstat", NULL, SC(1), NULL, 0, 0, 0, 0 }, { "/usr/bin/w", NULL, SC(1), NULL, 0, 0, 0, 1 }, { "/usr/bsd/w", NULL, SC(1), NULL, 0, 0, 0, 0 }, { "/usr/bin/df", NULL, SC(1), NULL, 0, 0, 0, 1 }, { "/bin/df", NULL, SC(1), NULL, 0, 0, 0, 0 }, { "/usr/sbin/portstat", NULL, SC(1), NULL, 0, 0, 0, 0 }, { "/usr/bin/iostat", NULL, SC(SC_0), NULL, 0, 0, 0, 0 }, { "/usr/bin/uptime", NULL, SC(SC_0), NULL, 0, 0, 0, 1 }, { "/usr/bsd/uptime", NULL, SC(SC_0), NULL, 0, 0, 0, 0 }, { "/bin/vmstat", "-f", SC(SC_0), NULL, 0, 0, 0, 1 }, { "/usr/bin/vmstat", "-f", SC(SC_0), NULL, 0, 0, 0, 0 }, { "/bin/vmstat", NULL, SC(SC_0), NULL, 0, 0, 0, 1 }, { "/usr/bin/vmstat", NULL, SC(SC_0), NULL, 0, 0, 0, 0 }, { "/usr/ucb/netstat", "-n", SC(0.5), NULL, 0, 0, 0, 1 }, { "/usr/bin/netstat", "-n", SC(0.5), NULL, 0, 0, 0, 1 }, { "/usr/sbin/netstat", "-n", SC(0.5), NULL, 0, 0, 0, 1 }, { "/usr/etc/netstat", "-n", SC(0.5), NULL, 0, 0, 0, 0 }, #if defined( __sgi ) || defined( __hpux ) { "/bin/ps", "-el", SC(0.3), NULL, 0, 0, 0, 1 }, #endif /* __sgi || __hpux */ { "/usr/ucb/ps", "aux", SC(0.3), NULL, 0, 0, 0, 1 }, { "/usr/bin/ps", "aux", SC(0.3), NULL, 0, 0, 0, 1 }, { "/bin/ps", "aux", SC(0.3), NULL, 0, 0, 0, 0 }, { "/bin/ps", "-A", SC(0.3), NULL, 0, 0, 0, 0 }, /*QNX*/ { "/usr/bin/ipcs", "-a", SC(0.5), NULL, 0, 0, 0, 1 }, { "/bin/ipcs", "-a", SC(0.5), NULL, 0, 0, 0, 0 }, /* Unreliable source, depends on system usage */ { "/etc/pstat", "-p", SC(0.5), NULL, 0, 0, 0, 1 }, { "/bin/pstat", "-p", SC(0.5), NULL, 0, 0, 0, 0 }, { "/etc/pstat", "-S", SC(0.2), NULL, 0, 0, 0, 1 }, { "/bin/pstat", "-S", SC(0.2), NULL, 0, 0, 0, 0 }, { "/etc/pstat", "-v", SC(0.2), NULL, 0, 0, 0, 1 }, { "/bin/pstat", "-v", SC(0.2), NULL, 0, 0, 0, 0 }, { "/etc/pstat", "-x", SC(0.2), NULL, 0, 0, 0, 1 }, { "/bin/pstat", "-x", SC(0.2), NULL, 0, 0, 0, 0 }, { "/etc/pstat", "-t", SC(0.1), NULL, 0, 0, 0, 1 }, { "/bin/pstat", "-t", SC(0.1), NULL, 0, 0, 0, 0 }, /* pstat is your friend */ { "/usr/bin/last", "-n 50", SC(0.3), NULL, 0, 0, 0, 1 }, #ifdef __sgi { "/usr/bsd/last", "-50", SC(0.3), NULL, 0, 0, 0, 0 }, #endif /* __sgi */ #ifdef __hpux { "/etc/last", "-50", SC(0.3), NULL, 0, 0, 0, 0 }, #endif /* __hpux */ { "/usr/bsd/last", "-n 50", SC(0.3), NULL, 0, 0, 0, 0 }, { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.5.1.0", SC(0.1), NULL, 0, 0, 0, 0 }, /* ICMP ? */ { "/usr/sbin/snmp_request", "localhost public get 1.3.6.1.2.1.5.3.0", SC(0.1), NULL, 0, 0, 0, 0 }, /* ICMP ? */ { "/etc/arp", "-a", SC(0.1), NULL, 0, 0, 0, 1 }, { "/usr/etc/arp", "-a", SC(0.1), NULL, 0, 0, 0, 1 }, { "/usr/bin/arp", "-a", SC(0.1), NULL, 0, 0, 0, 1 }, { "/usr/sbin/arp", "-a", SC(0.1), NULL, 0, 0, 0, 0 }, { "/usr/sbin/ripquery", "-nw 1 127.0.0.1", SC(0.1), NULL, 0, 0, 0, 0 }, { "/bin/lpstat", "-t", SC(0.1), NULL, 0, 0, 0, 1 }, { "/usr/bin/lpstat", "-t", SC(0.1), NULL, 0, 0, 0, 1 }, { "/usr/ucb/lpstat", "-t", SC(0.1), NULL, 0, 0, 0, 0 }, { "/usr/bin/tcpdump", "-c 5 -efvvx", SC(1), NULL, 0, 0, 0, 0 }, /* This is very environment-dependant. If network traffic is low, it'll * probably time out before delivering 5 packets, which is OK because * it'll probably be fixed stuff like ARP anyway */ { "/usr/sbin/advfsstat", "-b usr_domain", SC(SC_0), NULL, 0, 0, 0, 0}, { "/usr/sbin/advfsstat", "-l 2 usr_domain", SC(0.5), NULL, 0, 0, 0, 0}, { "/usr/sbin/advfsstat", "-p usr_domain", SC(SC_0), NULL, 0, 0, 0, 0}, /* This is a complex and screwball program. Some systems have things * like rX_dmn, x = integer, for RAID systems, but the statistics are * pretty dodgy */ #ifdef __QNXNTO__ { "/bin/pidin", "-F%A%B%c%d%E%I%J%K%m%M%n%N%p%P%S%s%T", SC(0.3), NULL, 0, 0, 0, 0 }, #endif #if 0 /* The following aren't enabled since they're somewhat slow and not very * unpredictable, however they give an indication of the sort of sources * you can use (for example the finger might be more useful on a * firewalled internal network) */ { "/usr/bin/finger", "@ml.media.mit.edu", SC(0.9), NULL, 0, 0, 0, 0 }, { "/usr/local/bin/wget", "-O - http://lavarand.sgi.com/block.html", SC(0.9), NULL, 0, 0, 0, 0 }, { "/bin/cat", "/usr/spool/mqueue/syslog", SC(0.9), NULL, 0, 0, 0, 0 }, #endif /* 0 */ { NULL, NULL, 0, NULL, 0, 0, 0, 0 } }; static byte *gather_buffer; /* buffer for gathering random noise */ static int gather_buffer_size; /* size of the memory buffer */ static uid_t gatherer_uid; /* The message structure used to communicate with the parent */ typedef struct { int usefulness; /* usefulness of data */ int ndata; /* valid bytes in data */ char data[500]; /* gathered data */ } GATHER_MSG; #ifndef HAVE_WAITPID static pid_t waitpid(pid_t pid, int *statptr, int options) { #ifdef HAVE_WAIT4 return wait4(pid, statptr, options, NULL); #else /* If wait4 is also not available, try wait3 for SVR3 variants */ /* Less ideal because can't actually request a specific pid */ /* For that reason, first check to see if pid is for an */ /* existing process. */ int tmp_pid, dummystat;; if (kill(pid, 0) == -1) { errno = ECHILD; return -1; } if (statptr == NULL) statptr = &dummystat; while (((tmp_pid = wait3(statptr, options, 0)) != pid) && (tmp_pid != -1) && (tmp_pid != 0) && (pid != -1)) ; return tmp_pid; #endif } #endif /* Under SunOS popen() doesn't record the pid of the child process. When * pclose() is called, instead of calling waitpid() for the correct child, it * calls wait() repeatedly until the right child is reaped. The problem is * that this reaps any other children that happen to have died at that * moment, and when their pclose() comes along, the process hangs forever. * The fix is to use a wrapper for popen()/pclose() which saves the pid in * the dataSources structure (code adapted from GNU-libc's popen() call). * * Aut viam inveniam aut faciam */ static FILE * my_popen(struct RI *entry) { int pipedes[2]; FILE *stream; /* Create the pipe */ if (pipe(pipedes) < 0) return (NULL); /* Fork off the child ("vfork() is like an OS orgasm. All OS's want to * do it, but most just end up faking it" - Chris Wedgwood). If your OS * supports it, you should try to use vfork() here because it's somewhat * more efficient */ #if defined( sun ) || defined( __ultrix__ ) || defined( __osf__ ) || \ defined(__hpux) entry->pid = vfork(); #else /* */ entry->pid = fork(); #endif /* Unixen which have vfork() */ if (entry->pid == (pid_t) - 1) { /* The fork failed */ close(pipedes[0]); close(pipedes[1]); return (NULL); } if (entry->pid == (pid_t) 0) { struct passwd *passwd; /* We are the child. Make the read side of the pipe be stdout */ if (dup2(pipedes[STDOUT_FILENO], STDOUT_FILENO) < 0) exit(127); /* Now that everything is set up, give up our permissions to make * sure we don't read anything sensitive. If the getpwnam() fails, * we default to -1, which is usually nobody */ if (gatherer_uid == (uid_t)-1 && \ (passwd = getpwnam("nobody")) != NULL) gatherer_uid = passwd->pw_uid; setuid(gatherer_uid); /* Close the pipe descriptors */ close(pipedes[STDIN_FILENO]); close(pipedes[STDOUT_FILENO]); /* Try and exec the program */ execl(entry->path, entry->path, entry->arg, NULL); /* Die if the exec failed */ exit(127); } /* We are the parent. Close the irrelevant side of the pipe and open * the relevant side as a new stream. Mark our side of the pipe to * close on exec, so new children won't see it */ close(pipedes[STDOUT_FILENO]); #ifdef FD_CLOEXEC fcntl(pipedes[STDIN_FILENO], F_SETFD, FD_CLOEXEC); #endif stream = fdopen(pipedes[STDIN_FILENO], "r"); if (stream == NULL) { int savedErrno = errno; /* The stream couldn't be opened or the child structure couldn't be * allocated. Kill the child and close the other side of the pipe */ kill(entry->pid, SIGKILL); if (stream == NULL) close(pipedes[STDOUT_FILENO]); else fclose(stream); waitpid(entry->pid, NULL, 0); entry->pid = 0; errno = savedErrno; return (NULL); } return (stream); } static int my_pclose(struct RI *entry) { int status = 0; if (fclose(entry->pipe)) return (-1); /* We ignore the return value from the process because some programs return funny values which would result in the input being discarded even if they executed successfully. This isn't a problem because the result data size threshold will filter out any programs which exit with a usage message without producing useful output. */ if (waitpid(entry->pid, NULL, 0) != entry->pid) status = -1; entry->pipe = NULL; entry->pid = 0; return (status); } /* Unix slow poll (without special support for Linux) * * If a few of the randomness sources create a large amount of output then * the slowPoll() stops once the buffer has been filled (but before all the * randomness sources have been sucked dry) so that the 'usefulness' factor * remains below the threshold. For this reason the gatherer buffer has to * be fairly sizeable on moderately loaded systems. This is something of a * bug since the usefulness should be influenced by the amount of output as * well as the source type */ static int slow_poll(FILE *dbgfp, int dbgall, size_t *nbytes ) { int moreSources; struct timeval tv; fd_set fds; #if defined( __hpux ) size_t maxFD = 0; #else int maxFD = 0; #endif /* OS-specific brokenness */ int bufPos, i, usefulness = 0; int last_so_far = 0; int any_need_entropy = 0; int delay; int rc; /* Fire up each randomness source */ FD_ZERO(&fds); for (i = 0; dataSources[i].path != NULL; i++) { /* Since popen() is a fairly heavy function, we check to see whether * the executable exists before we try to run it */ if (access(dataSources[i].path, X_OK)) { if( dbgfp && dbgall ) fprintf(dbgfp, "%s not present%s\n", dataSources[i].path, dataSources[i].hasAlternative ? ", has alternatives" : ""); dataSources[i].pipe = NULL; } else dataSources[i].pipe = my_popen(&dataSources[i]); if (dataSources[i].pipe != NULL) { dataSources[i].pipeFD = fileno(dataSources[i].pipe); if (dataSources[i].pipeFD > maxFD) maxFD = dataSources[i].pipeFD; #ifdef O_NONBLOCK /* Ohhh what a hack (used for Atari) */ fcntl(dataSources[i].pipeFD, F_SETFL, O_NONBLOCK); #else #error O_NONBLOCK is missing #endif /* FIXME: We need to make sure that the fd is less than FD_SETSIZE. */ FD_SET(dataSources[i].pipeFD, &fds); dataSources[i].length = 0; /* If there are alternatives for this command, don't try and * execute them */ while (dataSources[i].hasAlternative) { if( dbgfp && dbgall ) fprintf(dbgfp, "Skipping %s\n", dataSources[i + 1].path); i++; } } } /* Suck all the data we can get from each of the sources */ bufPos = 0; moreSources = 1; delay = 0; /* Return immediately (well, after 100ms) the first time. */ while (moreSources && bufPos <= gather_buffer_size) { /* Wait for data to become available from any of the sources, with a * timeout of 10 seconds. This adds even more randomness since data * becomes available in a nondeterministic fashion. Kudos to HP's QA * department for managing to ship a select() which breaks its own * prototype */ tv.tv_sec = delay; tv.tv_usec = delay? 0 : 100000; #if defined( __hpux ) && ( OS_VERSION == 9 ) rc = select(maxFD + 1, (int *)&fds, NULL, NULL, &tv); #else /* */ rc = select(maxFD + 1, &fds, NULL, NULL, &tv); #endif /* __hpux */ if (rc == -1) break; /* Ooops; select failed. */ if (!rc) { /* FIXME: Because we run several tools at once it is unlikely that we will see a block in select at all. */ if (!any_need_entropy || last_so_far != (gather_buffer_size - bufPos) ) { last_so_far = gather_buffer_size - bufPos; _gcry_random_progress ("need_entropy", 'X', last_so_far, gather_buffer_size); any_need_entropy = 1; } delay = 10; /* Use 10 seconds henceforth. */ /* Note that the fd_set is setup again at the end of this loop. */ } /* One of the sources has data available, read it into the buffer */ for (i = 0; dataSources[i].path != NULL; i++) { if( dataSources[i].pipe && FD_ISSET(dataSources[i].pipeFD, &fds)) { size_t noBytes; if ((noBytes = fread(gather_buffer + bufPos, 1, gather_buffer_size - bufPos, dataSources[i].pipe)) == 0) { if (my_pclose(&dataSources[i]) == 0) { int total = 0; /* Try and estimate how much entropy we're getting * from a data source */ if (dataSources[i].usefulness) { if (dataSources[i].usefulness < 0) total = (dataSources[i].length + 999) / -dataSources[i].usefulness; else total = dataSources[i].length / dataSources[i].usefulness; } if( dbgfp ) fprintf(dbgfp, "%s %s contributed %d bytes, " "usefulness = %d\n", dataSources[i].path, (dataSources[i].arg != NULL) ? dataSources[i].arg : "", dataSources[i].length, total); if( dataSources[i].length ) usefulness += total; } dataSources[i].pipe = NULL; } else { int currPos = bufPos; int endPos = bufPos + noBytes; /* Run-length compress the input byte sequence */ while (currPos < endPos) { int ch = gather_buffer[currPos]; /* If it's a single byte, just copy it over */ if (ch != gather_buffer[currPos + 1]) { gather_buffer[bufPos++] = ch; currPos++; } else { int count = 0; /* It's a run of repeated bytes, replace them * with the byte count mod 256 */ while ((ch == gather_buffer[currPos]) && currPos < endPos) { count++; currPos++; } gather_buffer[bufPos++] = count; noBytes -= count - 1; } } /* Remember the number of (compressed) bytes of input we * obtained */ dataSources[i].length += noBytes; } } } /* Check if there is more input available on any of the sources */ moreSources = 0; FD_ZERO(&fds); for (i = 0; dataSources[i].path != NULL; i++) { if (dataSources[i].pipe != NULL) { FD_SET(dataSources[i].pipeFD, &fds); moreSources = 1; } } } if (any_need_entropy) _gcry_random_progress ("need_entropy", 'X', gather_buffer_size, gather_buffer_size); if( dbgfp ) { fprintf(dbgfp, "Got %d bytes, usefulness = %d\n", bufPos, usefulness); fflush(dbgfp); } *nbytes = bufPos; return usefulness; } /**************** * Start the gatherer process which writes messages of * type GATHERER_MSG to pipedes */ static void start_gatherer( int pipefd ) { FILE *dbgfp = NULL; int dbgall; { const char *s = getenv("GNUPG_RNDUNIX_DBG"); if( s ) { dbgfp = (*s=='-' && !s[1])? stdout : fopen(s, "a"); if( !dbgfp ) log_info("can't open debug file `%s': %s\n", s, strerror(errno) ); else fprintf(dbgfp,"\nSTART RNDUNIX DEBUG pid=%d\n", (int)getpid()); } dbgall = !!getenv("GNUPG_RNDUNIX_DBGALL"); } /* close all files but the ones we need */ { int nmax, n1, n2, i; #ifdef _SC_OPEN_MAX if( (nmax=sysconf( _SC_OPEN_MAX )) < 0 ) { #ifdef _POSIX_OPEN_MAX nmax = _POSIX_OPEN_MAX; #else nmax = 20; /* assume a reasonable value */ #endif } #else /*!_SC_OPEN_MAX*/ nmax = 20; /* assume a reasonable value */ #endif /*!_SC_OPEN_MAX*/ n1 = fileno( stderr ); n2 = dbgfp? fileno( dbgfp ) : -1; for(i=0; i < nmax; i++ ) { if( i != n1 && i != n2 && i != pipefd ) close(i); } errno = 0; } /* Set up the buffer. Not ethat we use a plain standard malloc here. */ gather_buffer_size = GATHER_BUFSIZE; gather_buffer = malloc( gather_buffer_size ); if( !gather_buffer ) { log_error("out of core while allocating the gatherer buffer\n"); exit(2); } /* Reset the SIGC(H)LD handler to the system default. This is necessary * because if the program which cryptlib is a part of installs its own * SIGC(H)LD handler, it will end up reaping the cryptlib children before * cryptlib can. As a result, my_pclose() will call waitpid() on a * process which has already been reaped by the installed handler and * return an error, so the read data won't be added to the randomness * pool. There are two types of SIGC(H)LD naming, the SysV SIGCLD and * the BSD/Posix SIGCHLD, so we need to handle either possibility */ #ifdef SIGCLD signal(SIGCLD, SIG_DFL); #else signal(SIGCHLD, SIG_DFL); #endif fclose(stderr); /* Arrghh!! It's Stuart code!! */ + /* Mary goes to Berkeley: NetBSD emits warnings if the standard + descriptors are not open when running setuid program. Thus we + connect them to the bitbucket if they are not already open. */ + { + struct stat statbuf; + + if (fstat (STDIN_FILENO, &statbuf) == -1 && errno == EBADF) + open ("/dev/null",O_RDONLY); + if (fstat (STDOUT_FILENO, &statbuf) == -1 && errno == EBADF) + open ("/dev/null",O_WRONLY); + if (fstat (STDERR_FILENO, &statbuf) == -1 && errno == EBADF) + open ("/dev/null",O_WRONLY); + } + for(;;) { GATHER_MSG msg; size_t nbytes; const char *p; msg.usefulness = slow_poll( dbgfp, dbgall, &nbytes ); - p = gather_buffer; + p = (const char*)gather_buffer; while( nbytes ) { msg.ndata = nbytes > sizeof(msg.data)? sizeof(msg.data) : nbytes; memcpy( msg.data, p, msg.ndata ); nbytes -= msg.ndata; p += msg.ndata; while( write( pipefd, &msg, sizeof(msg) ) != sizeof(msg) ) { if( errno == EINTR ) continue; if( errno == EAGAIN ) { struct timeval tv; tv.tv_sec = 0; tv.tv_usec = 50000; select(0, NULL, NULL, NULL, &tv); continue; } if( errno == EPIPE ) /* parent has exited, so give up */ exit(0); /* we can't do very much here because stderr is closed */ if( dbgfp ) fprintf(dbgfp, "gatherer can't write to pipe: %s\n", strerror(errno) ); /* we start a new poll to give the system some time */ nbytes = 0; break; } } } /* we are killed when the parent dies */ } static int read_a_msg( int fd, GATHER_MSG *msg ) { char *buffer = (char*)msg; size_t length = sizeof( *msg ); int n; do { do { n = read(fd, buffer, length ); } while( n == -1 && errno == EINTR ); if( n == -1 ) return -1; buffer += n; length -= n; } while( length ); return 0; } /**************** * Using a level of 0 should never block and better add nothing * to the pool. So this is just a dummy for this gatherer. */ int _gcry_rndunix_gather_random (void (*add)(const void*, size_t, enum random_origins), enum random_origins origin, size_t length, int level ) { static pid_t gatherer_pid = 0; static int pipedes[2]; GATHER_MSG msg; size_t n; if( !level ) return 0; if( !gatherer_pid ) { /* Make sure we are not setuid. */ if ( getuid() != geteuid() ) BUG(); /* time to start the gatherer process */ if( pipe( pipedes ) ) { log_error("pipe() failed: %s\n", strerror(errno)); return -1; } gatherer_pid = fork(); if( gatherer_pid == -1 ) { log_error("can't for gatherer process: %s\n", strerror(errno)); return -1; } if( !gatherer_pid ) { start_gatherer( pipedes[1] ); /* oops, can't happen */ return -1; } } /* now read from the gatherer */ while( length ) { int goodness; ulong subtract; if( read_a_msg( pipedes[0], &msg ) ) { log_error("reading from gatherer pipe failed: %s\n", strerror(errno)); return -1; } if( level > 1 ) { if( msg.usefulness > 30 ) goodness = 100; else if ( msg.usefulness ) goodness = msg.usefulness * 100 / 30; else goodness = 0; } else if( level ) { if( msg.usefulness > 15 ) goodness = 100; else if ( msg.usefulness ) goodness = msg.usefulness * 100 / 15; else goodness = 0; } else goodness = 100; /* goodness of level 0 is always 100 % */ n = msg.ndata; if( n > length ) n = length; (*add)( msg.data, n, origin ); /* this is the trick how we cope with the goodness */ subtract = (ulong)n * goodness / 100; /* subtract at least 1 byte to avoid infinite loops */ length -= subtract ? subtract : 1; } return 0; }