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# ksba.m4 - autoconf macro to detect ksba
# Copyright (C) 2002, 2018, 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 "$GPGRT_CONFIG" != "no"; then
# Determine gpgrt_libdir
#
# Get the prefix of gpgrt-config assuming it's something like:
# <PREFIX>/bin/gpgrt-config
gpgrt_prefix=${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
# 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 ! $GPGRT_CONFIG gpg-error --exists; then
# If it doesn't work, clear the GPGRT_CONFIG variable.
unset GPGRT_CONFIG
fi
else
# GPGRT_CONFIG found but no suitable dir for --libdir found.
# This is a failure. Clear the GPGRT_CONFIG variable.
unset GPGRT_CONFIG
fi
])
dnl AM_PATH_KSBA([MINIMUM-VERSION,
dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
dnl Test for libksba and define KSBA_CFLAGS and KSBA_LIBS
dnl MINIMUM-VERSION is a string with the version number optionally prefixed
dnl with the API version to also check the API compatibility. Example:
dnl a MINIMUM-VERSION of 1:1.0.7 won't pass the test unless the installed
dnl version of libksba is at least 1.0.7 *and* the API number is 1. Using
dnl this features allows to prevent build against newer versions of libksba
dnl with a changed API.
dnl
AC_DEFUN([AM_PATH_KSBA],
[ AC_REQUIRE([AC_CANONICAL_HOST])dnl
AC_REQUIRE([_AM_PATH_GPGRT_CONFIG])dnl
dnl --with-libksba-prefix=PFX is the preferred name for this option,
dnl since that is consistent with how our three siblings use the directory/
dnl package name in --with-$dir_name-prefix=PFX.
AC_ARG_WITH(libksba-prefix,
AS_HELP_STRING([--with-libksba-prefix=PFX],
[prefix where KSBA is installed (optional)]),
ksba_config_prefix="$withval", ksba_config_prefix="")
dnl Accept --with-ksba-prefix and make it work the same as
dnl --with-libksba-prefix above, for backwards compatibility,
dnl but do not document this old, inconsistently-named option.
AC_ARG_WITH(ksba-prefix,,
ksba_config_prefix="$withval", ksba_config_prefix="")
if test x$ksba_config_prefix != x ; then
if test x${KSBA_CONFIG+set} != xset ; then
KSBA_CONFIG=$ksba_config_prefix/bin/ksba-config
fi
fi
use_gpgrt_config=""
if test x"$GPGRT_CONFIG" != x -a "$GPGRT_CONFIG" != "no"; then
if $GPGRT_CONFIG ksba --exists; then
KSBA_CONFIG="$GPGRT_CONFIG ksba"
AC_MSG_NOTICE([Use gpgrt-config as ksba-config])
use_gpgrt_config=yes
fi
fi
if test -z "$use_gpgrt_config"; then
AC_PATH_PROG(KSBA_CONFIG, ksba-config, no)
fi
tmp=ifelse([$1], ,1:1.0.0,$1)
if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
req_ksba_api=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\1/'`
min_ksba_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
else
req_ksba_api=0
min_ksba_version="$tmp"
fi
AC_MSG_CHECKING(for KSBA - version >= $min_ksba_version)
ok=no
if test "$KSBA_CONFIG" != "no" ; then
req_major=`echo $min_ksba_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
req_minor=`echo $min_ksba_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
req_micro=`echo $min_ksba_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
if test -z "$use_gpgrt_config"; then
ksba_config_version=`$KSBA_CONFIG --version`
else
ksba_config_version=`$KSBA_CONFIG --modversion`
fi
major=`echo $ksba_config_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
minor=`echo $ksba_config_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
micro=`echo $ksba_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 $ok = yes; then
AC_MSG_RESULT([yes ($ksba_config_version)])
else
AC_MSG_RESULT(no)
fi
if test $ok = yes; then
# Even if we have a recent libksba, we should check that the
# API is compatible.
if test "$req_ksba_api" -gt 0 ; then
if test -z "$use_gpgrt_config"; then
tmp=`$KSBA_CONFIG --api-version 2>/dev/null || echo 0`
else
tmp=`$KSBA_CONFIG --variable=api_version 2>/dev/null || echo 0`
fi
if test "$tmp" -gt 0 ; then
AC_MSG_CHECKING([KSBA API version])
if test "$req_ksba_api" -eq "$tmp" ; then
AC_MSG_RESULT(okay)
else
ok=no
AC_MSG_RESULT([does not match. want=$req_ksba_api got=$tmp.])
fi
fi
fi
fi
if test $ok = yes; then
KSBA_CFLAGS=`$KSBA_CONFIG --cflags`
KSBA_LIBS=`$KSBA_CONFIG --libs`
ifelse([$2], , :, [$2])
if test -z "$use_gpgrt_config"; then
libksba_config_host=`$KSBA_CONFIG --host 2>/dev/null || echo none`
else
libksba_config_host=`$KSBA_CONFIG --variable=host 2>/dev/null || echo none`
fi
if test x"$libksba_config_host" != xnone ; then
if test x"$libksba_config_host" != x"$host" ; then
AC_MSG_WARN([[
***
*** The config script "$KSBA_CONFIG" was
*** built for $libksba_config_host and thus may not match the
*** used host $host.
*** You may want to use the configure option --with-libksba-prefix
*** to specify a matching config script.
***]])
fi
fi
else
KSBA_CFLAGS=""
KSBA_LIBS=""
ifelse([$3], , :, [$3])
fi
AC_SUBST(KSBA_CFLAGS)
AC_SUBST(KSBA_LIBS)
])

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