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