# gpg-error.m4 - autoconf macro to detect libgpg-error.
# Copyright (C) 2002, 2003, 2004, 2011 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_GPG_ERROR([MINIMUM-VERSION,
dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
dnl Test for libgpg-error and define GPG_ERROR_CFLAGS and GPG_ERROR_LIBS
dnl
AC_DEFUN([AM_PATH_GPG_ERROR],
[ AC_REQUIRE([AC_CANONICAL_HOST])
gpg_error_config_prefix=""
dnl --with-libgpg-error-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-$dir_name-prefix=PFX.
AC_ARG_WITH(libgpg-error-prefix,
AC_HELP_STRING([--with-libgpg-error-prefix=PFX],
[prefix where GPG Error is installed (optional)]),
[gpg_error_config_prefix="$withval"])
dnl Accept --with-gpg-error-prefix and make it work the same as
dnl --with-libgpg-error-prefix above, for backwards compatibility,
dnl but do not document this old, inconsistently-named option.
AC_ARG_WITH(gpg-error-prefix,,
[gpg_error_config_prefix="$withval"])
if test x$gpg_error_config_prefix != x ; then
if test x${GPG_ERROR_CONFIG+set} != xset ; then
GPG_ERROR_CONFIG=$gpg_error_config_prefix/bin/gpg-error-config
fi
fi
AC_PATH_TOOL(GPG_ERROR_CONFIG, gpg-error-config, no)
min_gpg_error_version=ifelse([$1], ,0.0,$1)
AC_MSG_CHECKING(for GPG Error - version >= $min_gpg_error_version)
ok=no
if test "$GPG_ERROR_CONFIG" != "no" \
&& test -f "$GPG_ERROR_CONFIG" ; then
req_major=`echo $min_gpg_error_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
req_minor=`echo $min_gpg_error_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
gpg_error_config_version=`$GPG_ERROR_CONFIG $gpg_error_config_args --version`
major=`echo $gpg_error_config_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
minor=`echo $gpg_error_config_version | \
sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
if test "$major" -gt "$req_major"; then
ok=yes
else
if test "$major" -eq "$req_major"; then
if test "$minor" -ge "$req_minor"; then
ok=yes
fi
fi
fi
fi
if test $ok = yes; then
GPG_ERROR_CFLAGS=`$GPG_ERROR_CONFIG $gpg_error_config_args --cflags`
GPG_ERROR_LIBS=`$GPG_ERROR_CONFIG $gpg_error_config_args --libs`
AC_MSG_RESULT([yes ($gpg_error_config_version)])
ifelse([$2], , :, [$2])
gpg_error_config_host=`$GPG_ERROR_CONFIG $gpg_error_config_args --host 2>/dev/null || echo none`
if test x"$gpg_error_config_host" != xnone ; then
if test x"$gpg_error_config_host" != x"$host" ; then
AC_MSG_WARN([[
***
*** The config script $GPG_ERROR_CONFIG was
*** built for $gpg_error_config_host and thus may not match the
*** used host $host.
*** You may want to use the configure option --with-gpg-error-prefix
*** to specify a matching config script.
***]])
fi
fi
else
GPG_ERROR_CFLAGS=""
GPG_ERROR_LIBS=""
AC_MSG_RESULT(no)
ifelse([$3], , :, [$3])
fi
AC_SUBST(GPG_ERROR_CFLAGS)
AC_SUBST(GPG_ERROR_LIBS)
])