1 # libgcrypt.m4 - Autoconf macros to detect libgcrypt
2 # Copyright (C) 2002, 2003, 2004, 2011, 2014 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: 2014-10-02
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 MINIMUN-VERSION is a string with the version number optionalliy prefixed
19 dnl with the API version to also check the API compatibility. Example:
20 dnl a MINIMUN-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="${libgcrypt_config_prefix}/bin/libgcrypt-config"
42 if test -x "${SYSROOT}/bin/libgcrypt-config" ; then
43 LIBGCRYPT_CONFIG="${SYSROOT}/bin/libgcrypt-config"
49 AC_MSG_WARN([Ignoring \$SYSROOT as it is not an absolute path.])
55 AC_PATH_PROG(LIBGCRYPT_CONFIG, libgcrypt-config, no)
56 tmp=ifelse([$1], ,1:1.2.0,$1)
57 if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
58 req_libgcrypt_api=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\1/'`
59 min_libgcrypt_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
62 min_libgcrypt_version="$tmp"
65 AC_MSG_CHECKING(for LIBGCRYPT - version >= $min_libgcrypt_version)
67 if test "$LIBGCRYPT_CONFIG" != "no" ; then
68 req_major=`echo $min_libgcrypt_version | \
69 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
70 req_minor=`echo $min_libgcrypt_version | \
71 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
72 req_micro=`echo $min_libgcrypt_version | \
73 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
74 libgcrypt_config_version=`$LIBGCRYPT_CONFIG --version`
75 major=`echo $libgcrypt_config_version | \
76 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
77 minor=`echo $libgcrypt_config_version | \
78 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
79 micro=`echo $libgcrypt_config_version | \
80 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
81 if test "$major" -gt "$req_major"; then
84 if test "$major" -eq "$req_major"; then
85 if test "$minor" -gt "$req_minor"; then
88 if test "$minor" -eq "$req_minor"; then
89 if test "$micro" -ge "$req_micro"; then
97 if test $ok = yes; then
98 AC_MSG_RESULT([yes ($libgcrypt_config_version)])
102 if test $ok = yes; then
103 # If we have a recent libgcrypt, we should also check that the
105 if test "$req_libgcrypt_api" -gt 0 ; then
106 tmp=`$LIBGCRYPT_CONFIG --api-version 2>/dev/null || echo 0`
107 if test "$tmp" -gt 0 ; then
108 AC_MSG_CHECKING([LIBGCRYPT API version])
109 if test "$req_libgcrypt_api" -eq "$tmp" ; then
110 AC_MSG_RESULT([okay])
113 AC_MSG_RESULT([does not match. want=$req_libgcrypt_api got=$tmp])
118 if test $ok = yes; then
119 LIBGCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
120 LIBGCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
121 ifelse([$2], , :, [$2])
122 libgcrypt_config_host=`$LIBGCRYPT_CONFIG --host 2>/dev/null || echo none`
123 if test x"$libgcrypt_config_host" != xnone ; then
124 if test x"$libgcrypt_config_host" != x"$host" ; then
127 *** The config script $LIBGCRYPT_CONFIG was
128 *** built for $libgcrypt_config_host and thus may not match the
130 *** You may want to use the configure option --with-libgcrypt-prefix
131 *** to specify a matching config script or use \$SYSROOT.
133 gpg_config_script_warn="$gpg_config_script_warn libgcrypt"
139 ifelse([$3], , :, [$3])
141 AC_SUBST(LIBGCRYPT_CFLAGS)
142 AC_SUBST(LIBGCRYPT_LIBS)