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Diffstat (limited to 'm4/libgcrypt.m4')
| -rw-r--r-- | m4/libgcrypt.m4 | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/m4/libgcrypt.m4 b/m4/libgcrypt.m4 new file mode 100644 index 0000000..19d514f --- /dev/null +++ b/m4/libgcrypt.m4 @@ -0,0 +1,167 @@ +# libgcrypt.m4 - Autoconf macros to detect libgcrypt +# Copyright (C) 2002, 2003, 2004, 2011, 2014, 2018, 2020 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: 2020-09-27 + + +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 optionally prefixed +dnl with the API version to also check the API compatibility. Example: +dnl a MINIMUM-VERSION of 1:1.2.5 won't pass the test unless the installed +dnl version of libgcrypt is at least 1.2.5 *and* the API number is 1. Using +dnl this features allows to prevent build 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 $PATH. If the used +dnl config script does not match the host specification the script +dnl is added to the gpg_config_script_warn variable. +dnl +AC_DEFUN([AM_PATH_LIBGCRYPT], +[ AC_REQUIRE([AC_CANONICAL_HOST]) + AC_ARG_WITH(libgcrypt-prefix, + AS_HELP_STRING([--with-libgcrypt-prefix=PFX], + [prefix where LIBGCRYPT is installed (optional)]), + libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="") + if test x"${LIBGCRYPT_CONFIG}" = x ; then + if test x"${libgcrypt_config_prefix}" != x ; then + LIBGCRYPT_CONFIG="${libgcrypt_config_prefix}/bin/libgcrypt-config" + fi + fi + + use_gpgrt_config="" + if test x"${LIBGCRYPT_CONFIG}" = x -a x"$GPGRT_CONFIG" != x -a "$GPGRT_CONFIG" != "no"; then + if $GPGRT_CONFIG libgcrypt --exists; then + LIBGCRYPT_CONFIG="$GPGRT_CONFIG libgcrypt" + AC_MSG_NOTICE([Use gpgrt-config as libgcrypt-config]) + use_gpgrt_config=yes + fi + fi + if test -z "$use_gpgrt_config"; then + if test x"${LIBGCRYPT_CONFIG}" = x ; then + 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 + AC_PATH_PROG(LIBGCRYPT_CONFIG, libgcrypt-config, no) + fi + + tmp=ifelse([$1], ,1:1.2.0,$1) + if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then + req_libgcrypt_api=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\1/'` + min_libgcrypt_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'` + 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 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'` + req_minor=`echo $min_libgcrypt_version | \ + sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'` + req_micro=`echo $min_libgcrypt_version | \ + sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'` + if test -z "$use_gpgrt_config"; then + libgcrypt_config_version=`$LIBGCRYPT_CONFIG --version` + else + libgcrypt_config_version=`$LIBGCRYPT_CONFIG --modversion` + fi + major=`echo $libgcrypt_config_version | \ + sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'` + minor=`echo $libgcrypt_config_version | \ + sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'` + micro=`echo $libgcrypt_config_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 + 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 + if test -z "$use_gpgrt_config"; then + tmp=`$LIBGCRYPT_CONFIG --api-version 2>/dev/null || echo 0` + else + tmp=`$LIBGCRYPT_CONFIG --variable=api_version 2>/dev/null || echo 0` + fi + if test "$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], , :, [$2]) + if test -z "$use_gpgrt_config"; then + libgcrypt_config_host=`$LIBGCRYPT_CONFIG --host 2>/dev/null || echo none` + else + libgcrypt_config_host=`$LIBGCRYPT_CONFIG --variable=host 2>/dev/null || echo none` + fi + 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) +]) |