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