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# ksba.m4 - autoconf macro to detect ksba
# Copyright (C) 2002, 2018 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: 2020-11-18
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 MINIMUN-VERSION is a string with the version number optionalliy prefixed
dnl with the API version to also check the API compatibility. Example:
dnl a MINIMUN-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 --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"$KSBA_CONFIG" = x -a x"$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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