# libgcrypt.m4 - Autoconf macros to detect libgcrypt # Copyright (C) 2002, 2003, 2004, 2011, 2014, 2018, 2020, # 2024 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: 2024-06-13 dnl dnl Find gpgrt-config, which uses .pc file dnl (minimum pkg-config functionality, supporting cross build) dnl dnl _AM_PATH_GPGRT_CONFIG AC_DEFUN([_AM_PATH_GPGRT_CONFIG],[dnl AC_PATH_PROG(GPGRT_CONFIG, gpgrt-config, no, [$prefix/bin:$PATH]) if test "$GPGRT_CONFIG" != "no"; then # Determine gpgrt_libdir # # Get the prefix of gpgrt-config assuming it's something like: # /bin/gpgrt-config gpgrt_prefix=${GPGRT_CONFIG%/*/*} possible_libdir1=${gpgrt_prefix}/lib # Determine by using system libdir-format with CC, it's like: # Normal style: /usr/lib # GNU cross style: /usr//lib # Debian style: /usr/lib/ # Fedora/openSUSE style: /usr/lib, /usr/lib32 or /usr/lib64 # It is assumed that CC is specified to the one of host on cross build. if libdir_candidates=$(${CC:-cc} -print-search-dirs | \ sed -n -e "/^libraries/{s/libraries: =//;s/:/\\ /g;p;}"); then # From the output of -print-search-dirs, select valid pkgconfig dirs. libdir_candidates=$(for dir in $libdir_candidates; do if p=$(cd $dir 2>/dev/null && pwd); then test -d "$p/pkgconfig" && echo $p; fi done) for possible_libdir0 in $libdir_candidates; do # possible_libdir0: # Fallback candidate, the one of system-installed (by $CC) # (/usr//lib, /usr/lib/ or /usr/lib32) # possible_libdir1: # Another candidate, user-locally-installed # (/lib) # possible_libdir2 # Most preferred # (//lib, # /lib/ or /lib32) if test "${possible_libdir0##*/}" = "lib"; then possible_prefix0=${possible_libdir0%/lib} possible_prefix0_triplet=${possible_prefix0##*/} if test -z "$possible_prefix0_triplet"; then continue fi possible_libdir2=${gpgrt_prefix}/$possible_prefix0_triplet/lib else possible_prefix0=${possible_libdir0%%/lib*} possible_libdir2=${gpgrt_prefix}${possible_libdir0#$possible_prefix0} fi if test -f ${possible_libdir2}/pkgconfig/gpg-error.pc; then gpgrt_libdir=${possible_libdir2} elif test -f ${possible_libdir1}/pkgconfig/gpg-error.pc; then gpgrt_libdir=${possible_libdir1} elif test -f ${possible_libdir0}/pkgconfig/gpg-error.pc; then gpgrt_libdir=${possible_libdir0} fi if test -n "$gpgrt_libdir"; then break; fi done fi if test -z "$gpgrt_libdir"; then # No valid pkgconfig dir in any of the system directories, fallback gpgrt_libdir=${possible_libdir1} fi else unset GPGRT_CONFIG fi if test -n "$gpgrt_libdir"; then # Add the --libdir option to GPGRT_CONFIG GPGRT_CONFIG="$GPGRT_CONFIG --libdir=$gpgrt_libdir" # Make sure if gpgrt-config really works, by testing config gpg-error if ! $GPGRT_CONFIG gpg-error --exists; then # If it doesn't work, clear the GPGRT_CONFIG variable. unset GPGRT_CONFIG fi else # GPGRT_CONFIG found but no suitable dir for --libdir found. # This is a failure. Clear the GPGRT_CONFIG variable. unset GPGRT_CONFIG fi ]) 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 $PATH. If the used dnl config script does not match the host specification the script dnl is added to the gpg_config_script_warn variable. dnl AC_DEFUN([AM_PATH_LIBGCRYPT], [ AC_REQUIRE([AC_CANONICAL_HOST])dnl AC_REQUIRE([_AM_PATH_GPGRT_CONFIG])dnl AC_ARG_WITH(libgcrypt-prefix, AS_HELP_STRING([--with-libgcrypt-prefix=PFX], [prefix where LIBGCRYPT is installed (optional)]), libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="") if test x"${LIBGCRYPT_CONFIG}" = x ; then if test x"${libgcrypt_config_prefix}" != x ; then LIBGCRYPT_CONFIG="${libgcrypt_config_prefix}/bin/libgcrypt-config" fi fi use_gpgrt_config="" if test x"$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) ])