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# ksba.m4 - autoconf macro to detect ksba
# Copyright (C) 2002 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.
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_ARG_WITH(ksba-prefix,
AC_HELP_STRING([--with-ksba-prefix=PFX],
[prefix where KSBA is installed (optional)]),
ksba_config_prefix="$withval", ksba_config_prefix="")
if test x$ksba_config_prefix != x ; then
ksba_config_args="$ksba_config_args --prefix=$ksba_config_prefix"
if test x${KSBA_CONFIG+set} != xset ; then
KSBA_CONFIG=$ksba_config_prefix/bin/ksba-config
fi
fi
AC_PATH_PROG(KSBA_CONFIG, ksba-config, no)
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/'`
ksba_config_version=`$KSBA_CONFIG $ksba_config_args --version`
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
tmp=`$KSBA_CONFIG --api-version 2>/dev/null || echo 0`
if test "$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 $ksba_config_args --cflags`
KSBA_LIBS=`$KSBA_CONFIG $ksba_config_args --libs`
ifelse([$2], , :, [$2])
else
KSBA_CFLAGS=""
KSBA_LIBS=""
ifelse([$3], , :, [$3])
fi
AC_SUBST(KSBA_CFLAGS)
AC_SUBST(KSBA_LIBS)
])
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