1 # libgcrypt.m4 - Autoconf macros to detect libgcrypt
2 # Copyright (C) 2002, 2003, 2004, 2011, 2014, 2018 g10 Code GmbH
4 # This file is free software; as a special exception the author gives
5 # unlimited permission to copy and/or distribute it, with or without
6 # modifications, as long as this notice is preserved.
8 # This file is distributed in the hope that it will be useful, but
9 # WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
10 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 # Last-changed: 2018-11-13
15 dnl AM_PATH_LIBGCRYPT([MINIMUM-VERSION,
16 dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
17 dnl Test for libgcrypt and define LIBGCRYPT_CFLAGS and LIBGCRYPT_LIBS.
18 dnl MINIMUM-VERSION is a string with the version number optionally prefixed
19 dnl with the API version to also check the API compatibility. Example:
20 dnl a MINIMUM-VERSION of 1:1.2.5 won't pass the test unless the installed
21 dnl version of libgcrypt is at least 1.2.5 *and* the API number is 1. Using
22 dnl this features allows to prevent build against newer versions of libgcrypt
23 dnl with a changed API.
25 dnl If a prefix option is not used, the config script is first
26 dnl searched in $SYSROOT/bin and then along $PATH. If the used
27 dnl config script does not match the host specification the script
28 dnl is added to the gpg_config_script_warn variable.
30 AC_DEFUN([AM_PATH_LIBGCRYPT],
31 [ AC_REQUIRE([AC_CANONICAL_HOST])
32 AC_ARG_WITH(libgcrypt-prefix,
33 AC_HELP_STRING([--with-libgcrypt-prefix=PFX],
34 [prefix where LIBGCRYPT is installed (optional)]),
35 libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="")
36 if test x"${LIBGCRYPT_CONFIG}" = x ; then
37 if test x"${libgcrypt_config_prefix}" != x ; then
38 LIBGCRYPT_CONFIG="${libgcrypt_config_prefix}/bin/libgcrypt-config"
43 if test x"${LIBGCRYPT_CONFIG}" = x -a x"$GPGRT_CONFIG" != x -a "$GPGRT_CONFIG" != "no"; then
44 if $GPGRT_CONFIG libgcrypt --exists; then
45 LIBGCRYPT_CONFIG="$GPGRT_CONFIG libgcrypt"
46 AC_MSG_NOTICE([Use gpgrt-config as libgcrypt-config])
50 if test -z "$use_gpgrt_config"; then
51 if test x"${LIBGCRYPT_CONFIG}" = x ; then
54 if test -x "${SYSROOT}/bin/libgcrypt-config" ; then
55 LIBGCRYPT_CONFIG="${SYSROOT}/bin/libgcrypt-config"
61 AC_MSG_WARN([Ignoring \$SYSROOT as it is not an absolute path.])
65 AC_PATH_PROG(LIBGCRYPT_CONFIG, libgcrypt-config, no)
68 tmp=ifelse([$1], ,1:1.2.0,$1)
69 if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
70 req_libgcrypt_api=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\1/'`
71 min_libgcrypt_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
74 min_libgcrypt_version="$tmp"
77 AC_MSG_CHECKING(for LIBGCRYPT - version >= $min_libgcrypt_version)
79 if test "$LIBGCRYPT_CONFIG" != "no" ; then
80 req_major=`echo $min_libgcrypt_version | \
81 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
82 req_minor=`echo $min_libgcrypt_version | \
83 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
84 req_micro=`echo $min_libgcrypt_version | \
85 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
86 if test -z "$use_gpgrt_config"; then
87 libgcrypt_config_version=`$LIBGCRYPT_CONFIG --version`
89 libgcrypt_config_version=`$LIBGCRYPT_CONFIG --modversion`
91 major=`echo $libgcrypt_config_version | \
92 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
93 minor=`echo $libgcrypt_config_version | \
94 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
95 micro=`echo $libgcrypt_config_version | \
96 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
97 if test "$major" -gt "$req_major"; then
100 if test "$major" -eq "$req_major"; then
101 if test "$minor" -gt "$req_minor"; then
104 if test "$minor" -eq "$req_minor"; then
105 if test "$micro" -ge "$req_micro"; then
113 if test $ok = yes; then
114 AC_MSG_RESULT([yes ($libgcrypt_config_version)])
118 if test $ok = yes; then
119 # If we have a recent libgcrypt, we should also check that the
121 if test "$req_libgcrypt_api" -gt 0 ; then
122 if test -z "$use_gpgrt_config"; then
123 tmp=`$LIBGCRYPT_CONFIG --api-version 2>/dev/null || echo 0`
125 tmp=`$LIBGCRYPT_CONFIG --variable=api_version 2>/dev/null || echo 0`
127 if test "$tmp" -gt 0 ; then
128 AC_MSG_CHECKING([LIBGCRYPT API version])
129 if test "$req_libgcrypt_api" -eq "$tmp" ; then
130 AC_MSG_RESULT([okay])
133 AC_MSG_RESULT([does not match. want=$req_libgcrypt_api got=$tmp])
138 if test $ok = yes; then
139 LIBGCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
140 LIBGCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
141 ifelse([$2], , :, [$2])
142 if test -z "$use_gpgrt_config"; then
143 libgcrypt_config_host=`$LIBGCRYPT_CONFIG --host 2>/dev/null || echo none`
145 libgcrypt_config_host=`$LIBGCRYPT_CONFIG --variable=host 2>/dev/null || echo none`
147 if test x"$libgcrypt_config_host" != xnone ; then
148 if test x"$libgcrypt_config_host" != x"$host" ; then
151 *** The config script "$LIBGCRYPT_CONFIG" was
152 *** built for $libgcrypt_config_host and thus may not match the
154 *** You may want to use the configure option --with-libgcrypt-prefix
155 *** to specify a matching config script or use \$SYSROOT.
157 gpg_config_script_warn="$gpg_config_script_warn libgcrypt"
163 ifelse([$3], , :, [$3])
165 AC_SUBST(LIBGCRYPT_CFLAGS)
166 AC_SUBST(LIBGCRYPT_LIBS)