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# 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: 2024-05-14
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 "$GPGRT_CONFIG" != "no"; then
# Determine gpgrt_libdir
#
# Get the prefix of gpgrt-config assuming it's something like:
# <PREFIX>/bin/gpgrt-config
gpgrt_prefix=${GPGRT_CONFIG%/*/*}
possible_libdir1=${gpgrt_prefix}/lib
# Determine by using system libdir-format with CC, it's like:
# Normal style: /usr/lib
# GNU cross style: /usr/<triplet>/lib
# Debian style: /usr/lib/<multiarch-name>
# Fedora/openSUSE style: /usr/lib, /usr/lib32 or /usr/lib64
# It is assumed that CC is specified to the one of host on cross build.
if libdir_candidates=$(${CC:-cc} -print-search-dirs | \
sed -n -e "/^libraries/{s/libraries: =//;s/:/\\
/g;p;}"); then
# From the output of -print-search-dirs, select valid pkgconfig dirs.
libdir_candidates=$(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 $CC)
# (/usr/<triplet>/lib, /usr/lib/<multiarch-name> or /usr/lib32)
# possible_libdir1:
# Another candidate, user-locally-installed
# (<gpgrt_prefix>/lib)
# possible_libdir2
# Most preferred
# (<gpgrt_prefix>/<triplet>/lib,
# <gpgrt_prefix>/lib/<multiarch-name> or <gpgrt_prefix>/lib32)
if test "${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
GPGRT_CONFIG="$GPGRT_CONFIG --libdir=$gpgrt_libdir"
if $GPGRT_CONFIG gpg-error >/dev/null 2>&1; then
GPG_ERROR_CONFIG="$GPGRT_CONFIG gpg-error"
AC_MSG_NOTICE([Use gpgrt-config with $gpgrt_libdir as gpg-error-config])
gpg_error_config_version=`$GPG_ERROR_CONFIG --modversion`
else
gpg_error_config_version=`$GPG_ERROR_CONFIG --version`
unset GPGRT_CONFIG
fi
elif test "$GPG_ERROR_CONFIG" != "no"; then
gpg_error_config_version=`$GPG_ERROR_CONFIG --version`
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)
])
|
