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Merge pull request #868 from dequis/libgcrypt-m4
Add libgcrypt.m4 so autogen doesn't require libgcrypt-dev
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ailin-nemui
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143
m4/libgcrypt.m4
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143
m4/libgcrypt.m4
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# libgcrypt.m4 - Autoconf macros to detect libgcrypt
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# Copyright (C) 2002, 2003, 2004, 2011, 2014 g10 Code GmbH
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#
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# This file is free software; as a special exception the author gives
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# unlimited permission to copy and/or distribute it, with or without
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# modifications, as long as this notice is preserved.
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#
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# This file is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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#
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# Last-changed: 2014-10-02
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dnl AM_PATH_LIBGCRYPT([MINIMUM-VERSION,
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dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
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dnl Test for libgcrypt and define LIBGCRYPT_CFLAGS and LIBGCRYPT_LIBS.
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dnl MINIMUN-VERSION is a string with the version number optionalliy prefixed
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dnl with the API version to also check the API compatibility. Example:
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dnl a MINIMUN-VERSION of 1:1.2.5 won't pass the test unless the installed
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dnl version of libgcrypt is at least 1.2.5 *and* the API number is 1. Using
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dnl this features allows to prevent build against newer versions of libgcrypt
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dnl with a changed API.
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dnl
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dnl If a prefix option is not used, the config script is first
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dnl searched in $SYSROOT/bin and then along $PATH. If the used
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dnl config script does not match the host specification the script
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dnl is added to the gpg_config_script_warn variable.
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dnl
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AC_DEFUN([AM_PATH_LIBGCRYPT],
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[ AC_REQUIRE([AC_CANONICAL_HOST])
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AC_ARG_WITH(libgcrypt-prefix,
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AC_HELP_STRING([--with-libgcrypt-prefix=PFX],
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[prefix where LIBGCRYPT is installed (optional)]),
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libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="")
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if test x"${LIBGCRYPT_CONFIG}" = x ; then
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if test x"${libgcrypt_config_prefix}" != x ; then
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LIBGCRYPT_CONFIG="${libgcrypt_config_prefix}/bin/libgcrypt-config"
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else
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case "${SYSROOT}" in
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/*)
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if test -x "${SYSROOT}/bin/libgcrypt-config" ; then
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LIBGCRYPT_CONFIG="${SYSROOT}/bin/libgcrypt-config"
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fi
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;;
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'')
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;;
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*)
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AC_MSG_WARN([Ignoring \$SYSROOT as it is not an absolute path.])
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;;
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esac
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fi
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fi
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AC_PATH_PROG(LIBGCRYPT_CONFIG, libgcrypt-config, no)
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tmp=ifelse([$1], ,1:1.2.0,$1)
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if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
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req_libgcrypt_api=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\1/'`
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min_libgcrypt_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
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else
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req_libgcrypt_api=0
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min_libgcrypt_version="$tmp"
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fi
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AC_MSG_CHECKING(for LIBGCRYPT - version >= $min_libgcrypt_version)
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ok=no
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if test "$LIBGCRYPT_CONFIG" != "no" ; then
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req_major=`echo $min_libgcrypt_version | \
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sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
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req_minor=`echo $min_libgcrypt_version | \
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sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
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req_micro=`echo $min_libgcrypt_version | \
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sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
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libgcrypt_config_version=`$LIBGCRYPT_CONFIG --version`
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major=`echo $libgcrypt_config_version | \
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sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
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minor=`echo $libgcrypt_config_version | \
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sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
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micro=`echo $libgcrypt_config_version | \
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sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
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if test "$major" -gt "$req_major"; then
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ok=yes
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else
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if test "$major" -eq "$req_major"; then
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if test "$minor" -gt "$req_minor"; then
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ok=yes
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else
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if test "$minor" -eq "$req_minor"; then
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if test "$micro" -ge "$req_micro"; then
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ok=yes
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fi
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fi
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fi
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fi
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fi
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fi
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if test $ok = yes; then
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AC_MSG_RESULT([yes ($libgcrypt_config_version)])
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else
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AC_MSG_RESULT(no)
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fi
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if test $ok = yes; then
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# If we have a recent libgcrypt, we should also check that the
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# API is compatible
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if test "$req_libgcrypt_api" -gt 0 ; then
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tmp=`$LIBGCRYPT_CONFIG --api-version 2>/dev/null || echo 0`
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if test "$tmp" -gt 0 ; then
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AC_MSG_CHECKING([LIBGCRYPT API version])
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if test "$req_libgcrypt_api" -eq "$tmp" ; then
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AC_MSG_RESULT([okay])
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else
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ok=no
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AC_MSG_RESULT([does not match. want=$req_libgcrypt_api got=$tmp])
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fi
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fi
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fi
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fi
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if test $ok = yes; then
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LIBGCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
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LIBGCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
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ifelse([$2], , :, [$2])
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libgcrypt_config_host=`$LIBGCRYPT_CONFIG --host 2>/dev/null || echo none`
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if test x"$libgcrypt_config_host" != xnone ; then
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if test x"$libgcrypt_config_host" != x"$host" ; then
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AC_MSG_WARN([[
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***
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*** The config script $LIBGCRYPT_CONFIG was
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*** built for $libgcrypt_config_host and thus may not match the
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*** used host $host.
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*** You may want to use the configure option --with-libgcrypt-prefix
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*** to specify a matching config script or use \$SYSROOT.
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***]])
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gpg_config_script_warn="$gpg_config_script_warn libgcrypt"
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fi
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fi
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else
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LIBGCRYPT_CFLAGS=""
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LIBGCRYPT_LIBS=""
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ifelse([$3], , :, [$3])
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fi
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AC_SUBST(LIBGCRYPT_CFLAGS)
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AC_SUBST(LIBGCRYPT_LIBS)
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])
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