1 dnl Autoconf macros for libgcrypt
2 dnl Copyright (C) 2002, 2004 Free Software Foundation, Inc.
5 dnl This file is free software; as a special exception the author gives
6 dnl unlimited permission to copy and/or distribute it, with or without
7 dnl modifications, as long as this notice is preserved.
9 dnl This file is distributed in the hope that it will be useful, but
10 dnl WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
11 dnl implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14 dnl AM_PATH_LIBGCRYPT([MINIMUM-VERSION,
15 dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
16 dnl Test for libgcrypt and define LIBGCRYPT_CFLAGS and LIBGCRYPT_LIBS.
17 dnl MINIMUN-VERSION is a string with the version number optionalliy prefixed
18 dnl with the API version to also check the API compatibility. Example:
19 dnl a MINIMUN-VERSION of 1:1.2.5 won't pass the test unless the installed
20 dnl version of libgcrypt is at least 1.2.5 *and* the API number is 1. Using
21 dnl this features allows to prevent build against newer versions of libgcrypt
22 dnl with a changed API.
24 AC_DEFUN([AM_PATH_LIBGCRYPT],
25 [ AC_ARG_WITH(libgcrypt-prefix,
26 AC_HELP_STRING([--with-libgcrypt-prefix=PFX],
27 [prefix where LIBGCRYPT is installed (optional)]),
28 libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="")
29 if test x$libgcrypt_config_prefix != x ; then
30 if test x${LIBGCRYPT_CONFIG+set} != xset ; then
31 LIBGCRYPT_CONFIG=$libgcrypt_config_prefix/bin/libgcrypt-config
35 AC_PATH_PROG(LIBGCRYPT_CONFIG, libgcrypt-config, no)
36 tmp=ifelse([$1], ,1:1.2.0,$1)
37 if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
38 req_libgcrypt_api=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\1/'`
39 min_libgcrypt_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
42 min_libgcrypt_version="$tmp"
45 AC_MSG_CHECKING(for LIBGCRYPT - version >= $min_libgcrypt_version)
47 if test "$LIBGCRYPT_CONFIG" != "no" ; then
48 req_major=`echo $min_libgcrypt_version | \
49 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
50 req_minor=`echo $min_libgcrypt_version | \
51 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
52 req_micro=`echo $min_libgcrypt_version | \
53 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
54 libgcrypt_config_version=`$LIBGCRYPT_CONFIG --version`
55 major=`echo $libgcrypt_config_version | \
56 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
57 minor=`echo $libgcrypt_config_version | \
58 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
59 micro=`echo $libgcrypt_config_version | \
60 sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
61 if test "$major" -gt "$req_major"; then
64 if test "$major" -eq "$req_major"; then
65 if test "$minor" -gt "$req_minor"; then
68 if test "$minor" -eq "$req_minor"; then
69 if test "$micro" -ge "$req_micro"; then
77 if test $ok = yes; then
82 if test $ok = yes; then
83 # If we have a recent libgcrypt, we should also check that the
85 if test "$req_libgcrypt_api" -gt 0 ; then
86 tmp=`$LIBGCRYPT_CONFIG --api-version 2>/dev/null || echo 0`
87 if test "$tmp" -gt 0 ; then
88 AC_MSG_CHECKING([LIBGCRYPT API version])
89 if test "$req_libgcrypt_api" -eq "$tmp" ; then
93 AC_MSG_RESULT([does not match (want=$req_libgcrypt_api got=$tmp)])
98 if test $ok = yes; then
99 LIBGCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
100 LIBGCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
101 ifelse([$2], , :, [$2])
105 ifelse([$3], , :, [$3])
107 AC_SUBST(LIBGCRYPT_CFLAGS)
108 AC_SUBST(LIBGCRYPT_LIBS)