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	# configure.ac for GPGME
	# Copyright (C) 2000 Werner Koch (dd9jn)
	# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
	# 2009, 2010, 2011, 2012, 2013 g10 Code GmbH
	#
	# This file is part of GPGME.
	#
	# GPGME 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.
	#
	# GPGME 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 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_PREREQ(2.59)
	min_automake_version="1.11"

	# To build a release you need to create a tag with the version number
	# (git tag -s gpgme-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, [4])
	m4_define(mym4_version_micro, [1])

	# 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 'gpgme-[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([gpgme],[mym4_full_version],[http://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/changed: AGE=0)
	#
	LIBGPGME_LT_CURRENT=20
	# Subtract 2 from this value if you want to make the LFS transition an
	# ABI break. [Note to self: Remove this comment with the next regular break.]
	LIBGPGME_LT_AGE=9
	LIBGPGME_LT_REVISION=1

	# If the API is changed in an incompatible way: increment the next counter.
	GPGME_CONFIG_API_VERSION=1
	##############################################

	NEED_GPG_ERROR_VERSION=1.8
	NEED_LIBASSUAN_API=2
	NEED_LIBASSUAN_VERSION=2.0.2


	PACKAGE=$PACKAGE_NAME
	VERSION=$PACKAGE_VERSION

	AC_CONFIG_AUX_DIR([build-aux])
	AC_CONFIG_MACRO_DIR([m4])
	AC_CONFIG_SRCDIR(src/gpgme.h.in)
	AC_CONFIG_HEADER(config.h)
	AM_INIT_AUTOMAKE
	AM_MAINTAINER_MODE
	AC_CANONICAL_HOST

	# Enable GNU extensions on systems that have them.
	AC_GNU_SOURCE

	AH_VERBATIM([_REENTRANT],
	[/* To allow the use of GPGME in multithreaded programs we have to use
	special features from the library.
	IMPORTANT: gpgme is not yet fully reentrant and you should use it
	only from one thread. */
	#ifndef _REENTRANT
	# define _REENTRANT 1
	#endif])

	AC_PROG_CC
	AC_PROG_CXX

	# Note: A suitable gitlog-to-changelog script can be found in GnuPG master.
	AC_CHECK_PROGS(GITLOG_TO_CHANGELOG, gitlog-to-changelog, [gitlog-to-changelog])

	AC_SUBST(LIBGPGME_LT_CURRENT)
	AC_SUBST(LIBGPGME_LT_AGE)
	AC_SUBST(LIBGPGME_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)

	# Don't default to build static libs.
	LT_PREREQ([2.2.6])
	LT_INIT([win32-dll disable-static])
	LT_LANG([Windows Resource])

	# For now we hardcode the use of version scripts. It would be better
	# to write a test for this or even implement this within libtool.
	have_ld_version_script=no
	case "${host}" in
	--linux*)
	have_ld_version_script=yes
	;;
	--gnu*)
	have_ld_version_script=yes
	;;
	-apple-darwin)
	AC_DEFINE(_XOPEN_SOURCE, 500, Activate POSIX interface on MacOS X)
	;;
	esac

	AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")

	GPG_DEFAULT=no
	GPGSM_DEFAULT=no
	GPGCONF_DEFAULT=no
	G13_DEFAULT=no
	component_system=None
	have_dosish_system=no
	have_android_system=no
	have_w32_system=no
	have_w64_system=no
	build_w32_glib=no
	build_w32_qt=no
	case "${host}" in
	x86_64-mingw32)
	have_w64_system=yes
	;;
	-mingw32ce)
	have_w32ce_system=yes
	;;
	*-linux-androideabi)
	have_android_system=yes
	;;
	esac
	case "${host}" in
	-mingw32ce\|-mingw32)
	have_dosish_system=yes
	have_w32_system=yes
	GPG_DEFAULT='c:\\gnupg\\gpg.exe'
	GPGSM_DEFAULT='c:\\gnupg\\gpgsm.exe'
	GPGCONF_DEFAULT='c:\\gnupg\\gpgconf.exe'
	G13_DEFAULT='c:\\gnupg\\g13.exe'
	#component_system='COM+'

	AM_PATH_GLIB_2_0
	AC_ARG_ENABLE(w32-glib,
	AC_HELP_STRING([--enable-w32-glib], [build GPGME Glib for W32]),
	build_w32_glib=$enableval)

	# Check disabled, because the qt-dev packages in gpg4win do
	# not provide any support for cross compilation.
	# PKG_CHECK_MODULES(QT4_CORE, QtCore)

	# Use it like this:
	# ./configure --enable-w32-qt QT4_CORE_CFLAGS="..." QT4_CORE_LIBS="..."
	AC_SUBST(QT4_CORE_CFLAGS)
	AC_SUBST(QT4_CORE_LIBS)
	AC_ARG_ENABLE(w32-qt,
	AC_HELP_STRING([--enable-w32-qt], [build GPGME Qt for W32]),
	build_w32_qt=$enableval)
	;;
	*)
	AC_CHECK_LIB(pthread,pthread_create,have_pthread=yes)
	if test "$have_pthread" = yes; then
	AC_DEFINE(HAVE_PTHREAD, ,[Define if we have pthread.])
	fi

	# XXX: Probably use exec-prefix here?
	# GPG_DEFAULT='/usr/bin/gpg'
	# GPGSM_DEFAULT='/usr/bin/gpgsm'
	# GPGCONF_DEFAULT='/usr/bin/gpgconf'
	# G13_DEFAULT='/usr/bin/g13'
	;;
	esac

	if test "$have_dosish_system" = yes; then
	AC_DEFINE(HAVE_DOSISH_SYSTEM,1,
	[Defined if we run on some of the PCDOS like systems
	(DOS, Windoze. OS/2) with special properties like
	no file modes])
	fi
	AM_CONDITIONAL(HAVE_DOSISH_SYSTEM, test "$have_dosish_system" = yes)

	if test "$have_w32_system" = yes; then
	AC_DEFINE(HAVE_W32_SYSTEM,1,
	[Defined if we run on any kind of W32 API based system])
	fi
	AM_CONDITIONAL(HAVE_W32_SYSTEM, test "$have_w32_system" = yes)

	if test "$have_w64_system" = yes; then
	AC_DEFINE(HAVE_W64_SYSTEM,1,
	[Defined if we run on a 64 bit W32 API based system])
	fi
	AM_CONDITIONAL(HAVE_W64_SYSTEM, test "$have_w64_system" = yes)

	if test "$have_w32ce_system" = yes; then
	AC_DEFINE(HAVE_W32CE_SYSTEM,1,
	[Defined if we run on a W32 CE API based system])
	fi
	AM_CONDITIONAL(HAVE_W32CE_SYSTEM, test "$have_w32ce_system" = yes)

	if test "$have_android_system" = yes; then
	AC_DEFINE(HAVE_ANDROID_SYSTEM,1, [Defined if we build for an Android system])
	fi
	AM_CONDITIONAL(HAVE_ANDROID_SYSTEM, test "$have_android_system" = yes)

	AM_CONDITIONAL(BUILD_W32_GLIB, test "$build_w32_glib" = yes)
	AM_CONDITIONAL(BUILD_W32_QT, test "$build_w32_qt" = yes)

	AM_CONDITIONAL(HAVE_PTHREAD, test "$have_pthread" = "yes")


	#
	# 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 "$PACKAGE_VERSION"\|sed 's/$[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])




	# Checks for header files.
	AC_CHECK_HEADERS_ONCE([locale.h sys/select.h sys/uio.h argp.h
	unistd.h sys/time.h sys/types.h sys/stat.h])


	# Type checks.
	AC_C_INLINE
	AC_CHECK_SIZEOF(unsigned int)
	AC_SYS_LARGEFILE
	AC_TYPE_OFF_T
	AC_TYPE_UINTPTR_T

	# A simple compile time check in gpgme.h for GNU/Linux systems that
	# prevents a file offset bits mismatch between gpgme and the application.
	NEED__FILE_OFFSET_BITS=0
	if test "$have_w32_system" != yes; then
	case "$ac_cv_sys_file_offset_bits" in
	"" \| no \| unknown) ;;
	*)
	NEED__FILE_OFFSET_BITS=$ac_cv_sys_file_offset_bits
	;;
	esac
	fi
	AC_SUBST(NEED__FILE_OFFSET_BITS)

	# Figure out platform dependent typedefs for gpgme.h
	if test "$have_w32_system" = yes; then
	if test "$have_w64_system" = yes; then
	INSERT__TYPEDEFS_FOR_GPGME_H="/* Typedefs for the 64 bit W32 API. */
	#include <basetsd.h>
	typedef long off_t;
	typedef __int64 ssize_t;"
	else
	INSERT__TYPEDEFS_FOR_GPGME_H="/* Typedefs for the 32 bit W32 API. */
	#ifndef _OFF_T_DEFINED /* Defined by newer mingw32 toolkits. */
	typedef long off_t;
	#endif
	#ifndef _SSIZE_T_DEFINED /* Defined by newer mingw32 toolkits. */
	typedef long ssize_t;
	#endif"
	fi
	else
	INSERT__TYPEDEFS_FOR_GPGME_H="#include <sys/types.h>"
	fi
	AC_SUBST(INSERT__TYPEDEFS_FOR_GPGME_H)
	AM_SUBST_NOTMAKE(INSERT__TYPEDEFS_FOR_GPGME_H)

	# Checks for compiler features.
	if test "$GCC" = yes; then
	CFLAGS="$CFLAGS -Wall -Wcast-align -Wshadow -Wstrict-prototypes"
	if test "$have_w32_system" = yes; then
	CFLAGS="$CFLAGS -mms-bitfields"
	fi
	fi

	# Only used for debugging, so no serious test needed (for actual
	# functionality you have to test libc as well, this only tests the
	# compiler).
	AC_CACHE_CHECK([for __thread],[gpgme_cv_tls_works],
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([__thread int foo;])],
	gpgme_cv_tls_works=yes,gpgme_cv_tls_works=no))
	if test "$gpgme_cv_tls_works" = yes; then
	AC_DEFINE(HAVE_TLS, [1], [Define if __thread is supported])
	fi


	# Checks for library functions.
	AC_MSG_NOTICE([checking for libraries])

	AC_FUNC_FSEEKO

	AC_REPLACE_FUNCS(vasprintf)
	if test "$ac_cv_func_vasprintf" != yes; then
	GNUPG_CHECK_VA_COPY
	fi

	# Try to find a thread-safe version of ttyname().
	gnupg_REPLACE_TTYNAME_R
	if test "$ac_cv_func_ttyname_r" != yes; then
	AC_MSG_WARN([
	***
	*** ttyname() is not thread-safe and ttyname_r() does not exist
	***])
	fi

	# Try to find a thread-safe version of getenv().
	have_thread_safe_getenv=no
	jm_GLIBC21
	if test $GLIBC21 = yes; then
	have_thread_safe_getenv=yes
	fi
	if test $have_thread_safe_getenv = yes; then
	AC_DEFINE(HAVE_THREAD_SAFE_GETENV, [1], [Define if getenv() is thread-safe])
	fi
	have_getenv_r=no
	AC_CHECK_FUNCS(getenv_r, have_getenv_r=yes)
	if test $have_getenv_r = no && test $have_thread_safe_getenv = no; then
	AC_MSG_WARN([
	***
	*** getenv() is not thread-safe and getenv_r() does not exist
	***])
	fi

	# For converting time strings to seconds since Epoch, we need the timegm
	# function.
	AC_CHECK_FUNCS(timegm)
	if test "$ac_cv_func_timegm" != yes; then
	AC_MSG_WARN([
	***
	*** timegm() not available - a non-thread-safe kludge will be used
	*** and the TZ variable might be changed at runtime.
	***])
	fi

	AC_CHECK_FUNCS(setlocale)

	# Checking for libgpg-error.
	have_gpg_error=no
	AM_PATH_GPG_ERROR("$NEED_GPG_ERROR_VERSION",
	have_gpg_error=yes, have_gpg_error=no)
	AC_DEFINE(GPG_ERR_SOURCE_DEFAULT, GPG_ERR_SOURCE_GPGME,
	[The default error source for GPGME.])

	# And for libassuan.
	have_libassuan=no
	AM_PATH_LIBASSUAN("$NEED_LIBASSUAN_API:$NEED_LIBASSUAN_VERSION",
	have_libassuan=yes, have_libassuan=no)
	if test "$have_libassuan" = "yes"; then
	AC_DEFINE_UNQUOTED(GPGME_LIBASSUAN_VERSION, "$libassuan_version",
	[version of the libassuan library])
	fi
	AM_CONDITIONAL(HAVE_ASSUAN, test "$have_libassuan" = "yes")
	if test "$have_libassuan" = "yes"; then
	AC_DEFINE(ENABLE_ASSUAN,1,[Whether Assuan support is enabled])
	fi

	# Checks for system services
	NEED_GPG_VERSION_DEFAULT=1.4.0
	NEED_GPGSM_VERSION_DEFAULT=1.9.6
	NEED_GPGCONF_VERSION_DEFAULT=2.0.4
	NEED_G13_VERSION_DEFAULT=2.1.0
	NEED_GPG_VERSION="$NEED_GPG_VERSION_DEFAULT"
	NEED_GPGSM_VERSION="$NEED_GPGSM_VERSION_DEFAULT"
	NEED_GPGCONF_VERSION="$NEED_GPGCONF_VERSION_DEFAULT"
	NEED_G13_VERSION="$NEED_G13_VERSION_DEFAULT"
	AC_ARG_WITH(gpg-version,
	AC_HELP_STRING([--with-gpg-version=VER], [require GnuPG version VER]),
	NEED_GPG_VERSION=$withval)
	if test "$NEED_GPG_VERSION" = "yes"; then
	NEED_GPG_VERSION="$NEED_GPG_VERSION_DEFAULT"
	fi
	if test "$NEED_GPG_VERSION" = "no"; then
	NEED_GPG_VERSION=0.0.0
	fi
	AC_ARG_WITH(gpgsm-version,
	AC_HELP_STRING([--with-gpgsm-version=VER], [require GPGSM version VER]),
	NEED_GPGSM_VERSION=$withval)
	if test "$NEED_GPGSM_VERSION" = "yes"; then
	NEED_GPGSM_VERSION="$NEED_GPGSM_VERSION_DEFAULT"
	fi
	if test "$NEED_GPGSM_VERSION" = "no"; then
	NEED_GPGSM_VERSION=0.0.0
	fi
	AC_ARG_WITH(gpgconf-version,
	AC_HELP_STRING([--with-gpgconf-version=VER], [require GPGCONF version VER]),
	NEED_GPGCONF_VERSION=$withval)
	if test "$NEED_GPGCONF_VERSION" = "yes"; then
	NEED_GPGCONF_VERSION="$NEED_GPGCONF_VERSION_DEFAULT"
	fi
	if test "$NEED_GPGCONF_VERSION" = "no"; then
	NEED_GPGCONF_VERSION=0.0.0
	fi
	AC_ARG_WITH(g13-version,
	AC_HELP_STRING([--with-g13-version=VER], [require G13 version VER]),
	NEED_G13_VERSION=$withval)
	if test "$NEED_G13_VERSION" = "yes"; then
	NEED_G13_VERSION="$NEED_G13_VERSION_DEFAULT"
	fi
	if test "$NEED_G13_VERSION" = "no"; then
	NEED_G13_VERSION=0.0.0
	fi

	AC_DEFINE_UNQUOTED(NEED_GPG_VERSION, "$NEED_GPG_VERSION",
	[Min. needed GnuPG version.])
	AC_DEFINE_UNQUOTED(NEED_GPGSM_VERSION, "$NEED_GPGSM_VERSION",
	[Min. needed GPGSM version.])
	AC_DEFINE_UNQUOTED(NEED_GPGCONF_VERSION, "$NEED_GPGCONF_VERSION",
	[Min. needed GPGCONF version.])
	AC_DEFINE_UNQUOTED(NEED_G13_VERSION, "$NEED_G13_VERSION",
	[Min. needed G13 version.])


	NO_OVERRIDE=no
	AC_ARG_WITH(gpg,
	AC_HELP_STRING([--with-gpg=PATH], [use GnuPG binary at PATH]),
	GPG=$withval, NO_OVERRIDE=yes)
	if test "$NO_OVERRIDE" = "yes" \|\| test "$GPG" = "yes"; then
	GPG=
	NO_OVERRIDE=yes
	if test "$cross_compiling" != "yes"; then
	AC_PATH_PROG(GPG, gpg)
	fi
	if test -z "$GPG"; then
	GPG="$GPG_DEFAULT"
	fi
	fi
	if test "$GPG" = no; then
	if test "$NO_OVERRIDE" = "yes"; then
	if test "$cross_compiling" != "yes"; then
	AC_MSG_WARN([
	***
	*** Could not find GnuPG, install GnuPG or use --with-gpg=PATH to enable it
	***])
	else
	AC_MSG_ERROR([
	***
	*** Can not determine path to GnuPG when cross-compiling, use --with-gpg=PATH
	***])
	fi
	fi
	else
	AC_DEFINE_UNQUOTED(GPG_PATH, "$GPG", [Path to the GnuPG binary.])
	AC_SUBST(GPG)
	fi
	dnl Check for GnuPG version requirement.
	GPG_VERSION=unknown
	ok=maybe
	if test -z "$GPG" -o "x$GPG" = "xno"; then
	ok=no
	else
	if test "$cross_compiling" = "yes"; then
	AC_MSG_WARN([GnuPG version can not be checked when cross compiling])
	ok=no
	else
	if test ! -x "$GPG"; then
	AC_MSG_WARN([GnuPG not executable, version check disabled])
	ok=no
	fi
	fi
	fi
	if test "$ok" = "maybe"; then
	AC_MSG_CHECKING(for GPG >= $NEED_GPG_VERSION)
	req_major=`echo $NEED_GPG_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\1/'`
	req_minor=`echo $NEED_GPG_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\2/'`
	req_micro=`echo $NEED_GPG_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\3/'`
	GPG_VERSION=`$GPG --version \| sed -n '1 s/[[^0-9]]$.$/\1/p'`
	major=`echo $GPG_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\1/'`
	minor=`echo $GPG_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\2/'`
	micro=`echo $GPG_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\3/'`

	if test "$major" -gt "$req_major"; then
	ok=yes
	else
	if test "$major" -eq "$req_major"; then
	if test "$minor" -gt "$req_minor"; then
	ok=yes
	else
	if test "$minor" -eq "$req_minor"; then
	if test "$micro" -ge "$req_micro"; then
	ok=yes
	fi
	fi
	fi
	fi
	fi
	if test "$ok" = "yes"; then
	AC_MSG_RESULT(yes)
	else
	AC_MSG_RESULT(no)
	AC_MSG_WARN([GPG must be at least version $NEED_GPG_VERSION])
	fi
	fi
	run_gpg_test="$ok"
	AC_ARG_ENABLE(gpg-test,
	AC_HELP_STRING([--disable-gpg-test], [disable GPG run test]),
	run_gpg_test=$enableval)
	AM_CONDITIONAL(RUN_GPG_TESTS, test "$run_gpg_test" = "yes")
	AC_SUBST(GPG_PATH)

	NO_OVERRIDE=no
	AC_ARG_WITH(gpgsm,
	AC_HELP_STRING([--with-gpgsm=PATH], [use GpgSM binary at PATH]),
	GPGSM=$withval, NO_OVERRIDE=yes)
	if test "$NO_OVERRIDE" = "yes" \|\| test "$GPGSM" = "yes"; then
	GPGSM=
	NO_OVERRIDE=yes
	if test "$cross_compiling" != "yes"; then
	AC_PATH_PROG(GPGSM, gpgsm)
	fi
	if test -z "$GPGSM"; then
	GPGSM="$GPGSM_DEFAULT"
	fi
	fi
	if test "$GPGSM" = no; then
	if test "$NO_OVERRIDE" = "yes"; then
	if test "$cross_compiling" != "yes"; then
	AC_MSG_WARN([
	***
	*** Could not find GpgSM, install GpgSM or use --with-gpgsm=PATH to enable it
	***])
	else
	AC_MSG_ERROR([
	***
	*** Can not determine path to GpgSM when cross-compiling, use --with-gpgsm=PATH
	***])
	fi
	fi
	else
	AC_DEFINE_UNQUOTED(GPGSM_PATH, "$GPGSM", [Path to the GPGSM binary.])
	AC_DEFINE(ENABLE_GPGSM,1,[Whether GPGSM support is enabled])
	fi
	AM_CONDITIONAL(HAVE_GPGSM, test "$GPGSM" != "no")


	dnl Check for GPGSM version requirement.
	GPGSM_VERSION=unknown
	ok=maybe
	if test -z "$GPGSM" -o "x$GPGSM" = "xno"; then
	ok=no
	else
	if test "$cross_compiling" = "yes"; then
	AC_MSG_WARN([GPGSM version can not be checked when cross compiling])
	ok=no
	else
	if test ! -x "$GPGSM"; then
	AC_MSG_WARN([GPGSM not executable, version check disabled])
	ok=no
	fi
	fi
	fi
	if test "$ok" = "maybe"; then
	AC_MSG_CHECKING(for GPGSM >= $NEED_GPGSM_VERSION)
	req_major=`echo $NEED_GPGSM_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\1/'`
	req_minor=`echo $NEED_GPGSM_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\2/'`
	req_micro=`echo $NEED_GPGSM_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\3/'`
	GPGSM_VERSION=`$GPGSM --version \| sed -n '1 s/[[^0-9]]$.$/\1/p'`
	major=`echo $GPGSM_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\1/'`
	minor=`echo $GPGSM_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\2/'`
	micro=`echo $GPGSM_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\3/'`

	if test "$major" -gt "$req_major"; then
	ok=yes
	else
	if test "$major" -eq "$req_major"; then
	if test "$minor" -gt "$req_minor"; then
	ok=yes
	else
	if test "$minor" -eq "$req_minor"; then
	if test "$micro" -ge "$req_micro"; then
	ok=yes
	fi
	fi
	fi
	fi
	fi
	if test "$ok" = "yes"; then
	AC_MSG_RESULT(yes)
	else
	AC_MSG_RESULT(no)
	AC_MSG_WARN([GPGSM must be at least version $NEED_GPGSM_VERSION])
	fi
	fi
	run_gpgsm_test="$ok"
	AC_ARG_ENABLE(gpgsm-test,
	AC_HELP_STRING([--disable-gpgsm-test], [disable GPGSM run test]),
	run_gpgsm_test=$enableval)
	AM_CONDITIONAL(RUN_GPGSM_TESTS, test "$run_gpgsm_test" = "yes")


	NO_OVERRIDE=no
	AC_ARG_WITH(gpgconf,
	AC_HELP_STRING([--with-gpgconf=PATH],
	[use gpgconf binary at PATH]),
	GPGCONF=$withval, NO_OVERRIDE=yes)
	if test "$NO_OVERRIDE" = "yes" \|\| test "$GPGCONF" = "yes"; then
	GPGCONF=
	NO_OVERRIDE=yes
	if test "$cross_compiling" != "yes"; then
	AC_PATH_PROG(GPGCONF, gpgconf)
	fi
	if test -z "$GPGCONF"; then
	GPGCONF="$GPGCONF_DEFAULT"
	fi
	fi
	if test "$GPGCONF" = no; then
	if test "$NO_OVERRIDE" = "yes"; then
	if test "$cross_compiling" != "yes"; then
	AC_MSG_WARN([
	***
	*** Could not find gpgconf, install gpgconf or use --with-gpgconf=PATH to enable it
	***])
	else
	AC_MSG_ERROR([
	***
	*** Can not determine path to gpgconf when cross-compiling, use --with-gpgconf=PATH
	***])
	fi
	fi
	else
	AC_DEFINE_UNQUOTED(GPGCONF_PATH, "$GPGCONF", [Path to the GPGCONF binary.])
	AC_DEFINE(ENABLE_GPGCONF,1,[Whether GPGCONF support is enabled])
	fi
	AM_CONDITIONAL(HAVE_GPGCONF, test "$GPGCONF" != "no")

	dnl Check for GPGCONF version requirement.
	GPGCONF_VERSION=unknown
	ok=maybe
	if test -z "$GPGCONF" -o "x$GPGCONF" = "xno"; then
	ok=no
	else
	if test "$cross_compiling" = "yes"; then
	AC_MSG_WARN([GPGCONF version can not be checked when cross compiling])
	ok=no
	else
	if test ! -x "$GPGCONF"; then
	AC_MSG_WARN([GPGCONF not executable, version check disabled])
	ok=no
	fi
	fi
	fi
	if test "$ok" = "maybe"; then
	AC_MSG_CHECKING(for GPGCONF >= $NEED_GPGCONF_VERSION)
	req_major=`echo $NEED_GPGCONF_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\1/'`
	req_minor=`echo $NEED_GPGCONF_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\2/'`
	req_micro=`echo $NEED_GPGCONF_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\3/'`
	GPGCONF_VERSION=`$GPGCONF --version \| sed -n '1 s/[[^0-9]]$.$/\1/p'`
	major=`echo $GPGCONF_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\1/'`
	minor=`echo $GPGCONF_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\2/'`
	micro=`echo $GPGCONF_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\3/'`

	if test "$major" -gt "$req_major"; then
	ok=yes
	else
	if test "$major" -eq "$req_major"; then
	if test "$minor" -gt "$req_minor"; then
	ok=yes
	else
	if test "$minor" -eq "$req_minor"; then
	if test "$micro" -ge "$req_micro"; then
	ok=yes
	fi
	fi
	fi
	fi
	fi
	if test "$ok" = "yes"; then
	AC_MSG_RESULT(yes)
	else
	AC_MSG_RESULT(no)
	AC_MSG_WARN([GPGCONF must be at least version $NEED_GPGCONF_VERSION])
	fi
	fi
	run_gpgconf_test="$ok"
	AC_ARG_ENABLE(gpgconf-test,
	AC_HELP_STRING([--disable-gpgconf-test], [disable GPGCONF run test]),
	run_gpgconf_test=$enableval)
	AM_CONDITIONAL(RUN_GPGCONF_TESTS, test "$run_gpgconf_test" = "yes")


	NO_OVERRIDE=no
	AC_ARG_WITH(g13,
	AC_HELP_STRING([--with-g13=PATH],
	[use g13 binary at PATH]),
	G13=$withval, NO_OVERRIDE=yes)
	if test "$NO_OVERRIDE" = "yes" \|\| test "$G13" = "yes"; then
	G13=
	NO_OVERRIDE=yes
	if test "$cross_compiling" != "yes"; then
	AC_PATH_PROG(G13, g13)
	fi
	if test -z "$G13"; then
	G13="$G13_DEFAULT"
	fi
	fi
	if test "$G13" = no; then
	if test "$NO_OVERRIDE" = "yes"; then
	if test "$cross_compiling" != "yes"; then
	AC_MSG_WARN([
	***
	*** Could not find g13, install g13 or use --with-g13=PATH to enable it
	***])
	else
	AC_MSG_ERROR([
	***
	*** Can not determine path to g13 when cross-compiling, use --with-g13=PATH
	***])
	fi
	fi
	else
	AC_DEFINE_UNQUOTED(G13_PATH, "$G13", [Path to the G13 binary.])
	AC_DEFINE(ENABLE_G13,1,[Whether G13 support is enabled])
	fi
	AM_CONDITIONAL(HAVE_G13, test "$G13" != "no")

	dnl Check for G13 version requirement.
	G13_VERSION=unknown
	ok=maybe
	if test -z "$G13" -o "x$G13" = "xno"; then
	ok=no
	else
	if test "$cross_compiling" = "yes"; then
	AC_MSG_WARN([G13 version can not be checked when cross compiling])
	ok=no
	else
	if test ! -x "$G13"; then
	AC_MSG_WARN([G13 not executable, version check disabled])
	ok=no
	fi
	fi
	fi
	if test "$ok" = "maybe"; then
	AC_MSG_CHECKING(for G13 >= $NEED_G13_VERSION)
	req_major=`echo $NEED_G13_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\1/'`
	req_minor=`echo $NEED_G13_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\2/'`
	req_micro=`echo $NEED_G13_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]*$/\3/'`
	G13_VERSION=`$G13 --version \| sed -n '1 s/.\ $[[0-9]].$/\1/p'`
	major=`echo $G13_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\1/'`
	minor=`echo $G13_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\2/'`
	micro=`echo $G13_VERSION \| \
	sed 's/$[[0-9]]$\.$[[0-9]]$\.$[[0-9]]$./\3/'`

	if test "$major" -gt "$req_major"; then
	ok=yes
	else
	if test "$major" -eq "$req_major"; then
	if test "$minor" -gt "$req_minor"; then
	ok=yes
	else
	if test "$minor" -eq "$req_minor"; then
	if test "$micro" -ge "$req_micro"; then
	ok=yes
	fi
	fi
	fi
	fi
	fi
	if test "$ok" = "yes"; then
	AC_MSG_RESULT(yes)
	else
	AC_MSG_RESULT(no)
	AC_MSG_WARN([G13 must be at least version $NEED_G13_VERSION])
	fi
	fi
	run_g13_test="$ok"
	AC_ARG_ENABLE(g13-test,
	AC_HELP_STRING([--disable-g13-test], [disable G13 run test]),
	run_g13_test=$enableval)
	AM_CONDITIONAL(RUN_G13_TESTS, test "$run_g13_test" = "yes")


	# Check for funopen
	AC_CHECK_FUNCS(funopen)
	if test $ac_cv_func_funopen != yes; then
	# No funopen but we can implement that in terms of fopencookie.
	AC_CHECK_FUNCS(fopencookie)
	if test $ac_cv_func_fopencookie = yes; then
	AC_REPLACE_FUNCS(funopen)
	else
	AC_MSG_WARN([
	***
	*** No implementation of fopencookie or funopen available
	***])
	fi
	fi

	# Check for getgid etc
	AC_CHECK_FUNCS(getgid getegid)


	# Replacement functions.
	AC_REPLACE_FUNCS(stpcpy)
	AC_REPLACE_FUNCS(setenv)

	# Assuan check for descriptor passing.
	AC_CHECK_MEMBER(struct cmsghdr.cmsg_len,
	[supports_descriptor_passing=yes],
	[supports_descriptor_passing=no
	AC_MSG_WARN([
	***
	*** Data structure for sending ancillary data missing.
	*** Descriptor passing won't work.
	***])],[
	#include <stdlib.h>
	#include <stddef.h>
	#include <stdio.h>
	#include <sys/types.h>
	#include <sys/socket.h>
	#include <sys/un.h>
	#if HAVE_SYS_UIO_H
	#include <sys/uio.h>
	#endif
	#include <unistd.h>
	])


	dnl There seems to be a problem with Apple and decriptor passing.
	dnl Until we found a solution we change the default to no.
	dnl See bug 1483.
	case "${host}" in
	-apple-darwin)
	use_descriptor_passing=no
	;;
	*)
	use_descriptor_passing=yes
	;;
	esac
	AC_ARG_ENABLE(fd-passing,
	AC_HELP_STRING([--disable-fd-passing], [do not use FD passing]),
	use_descriptor_passing=$enableval)

	if test "$supports_descriptor_passing" != "yes"; then
	use_descriptor_passing=no
	fi

	if test "$use_descriptor_passing" = "yes"; then
	AC_DEFINE(USE_DESCRIPTOR_PASSING,1,
	[Defined if descriptor passing is enabled and supported])
	fi

	AM_CONDITIONAL(USE_DESCRIPTOR_PASSING, test "$use_descriptor_passing" = "yes")


	uiserver=no
	if test "$use_descriptor_passing" = "yes" && test "$have_libassuan" = "yes"; then
	uiserver=yes
	fi
	if test "$uiserver" != "no"; then
	AC_DEFINE(ENABLE_UISERVER, 1,
	[Defined if we are building with uiserver support.])
	fi
	AM_CONDITIONAL(HAVE_UISERVER, test "$uiserver" != "no")


	# Add a few constants to help porting to W32
	AH_VERBATIM([SEPCONSTANTS],
	[
	/* Separators as used in $PATH. */
	#ifdef HAVE_DOSISH_SYSTEM
	#define PATHSEP_C ';'
	#else
	#define PATHSEP_C ':'
	#endif
	])

	AH_BOTTOM([
	/* Definition of GCC specific attributes. */
	#if __GNUC__ > 2
	# define GPGME_GCC_A_PURE __attribute__ ((__pure__))
	#else
	# define GPGME_GCC_A_PURE
	#endif

	/* Under WindowsCE we need gpg-error's strerror macro. */
	#define GPG_ERR_ENABLE_ERRNO_MACROS 1

	#define CRIGHTBLURB "Copyright (C) 2000 Werner Koch\n" \
	"Copyright (C) 2001--2013 g10 Code GmbH\n"
	])


	# Substitution used for gpgme-config
	GPGME_CONFIG_LIBS="-lgpgme"
	GPGME_CONFIG_CFLAGS=""
	GPGME_CONFIG_HOST="$host"
	AC_SUBST(GPGME_CONFIG_API_VERSION)
	AC_SUBST(GPGME_CONFIG_LIBS)
	AC_SUBST(GPGME_CONFIG_CFLAGS)
	AC_SUBST(GPGME_CONFIG_HOST)

	# Frob'da Variables
	LTLIBOBJS=`echo "$LIB@&t@OBJS" \|
	sed 's,\.[[^.]]* ,.lo ,g;s,\.[[^.]]*$,.lo,'`
	AC_SUBST(LTLIBOBJS)

	# Some checks for gpgme-tool
	# Done at top: AC_CHECK_HEADER([argp.h])
	AC_CHECK_TYPES([error_t], [],
	[AC_DEFINE([error_t], [int],
	[Define to a type to use for `error_t' if it is not otherwise available.])],
	[#include <errno.h>])


	# A substitution 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:'])


	# Last check.
	die=no
	if test "$have_gpg_error" = "no"; then
	die=yes
	AC_MSG_NOTICE([[
	***
	*** You need libgpg-error to build this program.
	** This library is for example available at
	*** ftp://ftp.gnupg.org/gcrypt/libgpg-error
	*** (at least version $NEED_GPG_ERROR_VERSION is required.)
	***]])
	fi
	if test "$have_libassuan" = "no"; then
	die=yes
	AC_MSG_NOTICE([[
	***
	*** You need libassuan to build this program with GPGSM support.
	*** This library is for example available at
	*** ftp://ftp.gnupg.org/gcrypt/libassuan/
	*** (at least version $NEED_LIBASSUAN_VERSION (API $NEED_LIBASSUAN_API) is required).
	***]])
	fi

	if test "$die" = "yes"; then
	AC_MSG_ERROR([[
	***
	*** Required libraries not found. Please consult the above messages
	*** and install them before running configure again.
	***]])
	fi


	#
	# Create config files

	AC_CONFIG_FILES(Makefile src/Makefile
	tests/Makefile
	tests/gpg/Makefile
	tests/gpgsm/Makefile
	tests/opassuan/Makefile
	doc/Makefile
	src/versioninfo.rc
	src/gpgme.h)
	AC_CONFIG_FILES(src/gpgme-config, chmod +x src/gpgme-config)
	AC_CONFIG_FILES([lang/Makefile lang/cl/Makefile lang/cl/gpgme.asd])
	AC_OUTPUT

	echo "
	GPGME v${VERSION} has been configured as follows:

	Revision: mym4_revision (mym4_revision_dec)
	Platform: $host

	GnuPG path: $GPG
	GnuPG version: $GPG_VERSION, min. $NEED_GPG_VERSION
	GpgSM path: $GPGSM
	GpgSM version: $GPGSM_VERSION, min. $NEED_GPGSM_VERSION
	GpgConf path: $GPGCONF
	GpgConf version: $GPGCONF_VERSION, min. $NEED_GPGCONF_VERSION
	G13 path: $G13
	G13 version: $G13_VERSION, min. $NEED_G13_VERSION

	Assuan version: $libassuan_config_version, min. $NEED_LIBASSUAN_VERSION

	UI Server: $uiserver
	FD Passing: $use_descriptor_passing
	GPGME Pthread: $have_pthread
	"

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