/[mcrypt]/libmcrypt/lib/libmcrypt.m4
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Contents of /libmcrypt/lib/libmcrypt.m4

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Revision 1.1 - (show annotations)
Wed May 16 08:55:12 2001 UTC (22 years, 11 months ago) by nmav
Branch: MAIN
added libmcrypt-config so programs that use libmcrypt can be configured
easier

1 dnl Autoconf macros for libmcrypt
2 dnl $id$
3
4 # Modified for LIBMCRYPT -- nmav
5 # Configure paths for LIBGCRYPT
6 # Shamelessly stolen from the one of XDELTA by Owen Taylor
7 # Werner Koch 99-12-09
8
9 dnl AM_PATH_LIBMCRYPT([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
10 dnl Test for libmcrypt, and define LIBMCRYPT_CFLAGS and LIBMCRYPT_LIBS
11 dnl
12 AC_DEFUN(AM_PATH_LIBMCRYPT,
13 [dnl
14 dnl Get the cflags and libraries from the libmcrypt-config script
15 dnl
16 AC_ARG_WITH(libmcrypt-prefix,
17 [ --with-libmcrypt-prefix=PFX Prefix where libmcrypt is installed (optional)],
18 libmcrypt_config_prefix="$withval", libmcrypt_config_prefix="")
19
20 if test x$libmcrypt_config_prefix != x ; then
21 libmcrypt_config_args="$libmcrypt_config_args --prefix=$libmcrypt_config_prefix"
22 if test x${LIBMCRYPT_CONFIG+set} != xset ; then
23 LIBMCRYPT_CONFIG=$libmcrypt_config_prefix/bin/libmcrypt-config
24 fi
25 fi
26
27 AC_PATH_PROG(LIBMCRYPT_CONFIG, libmcrypt-config, no)
28 min_libmcrypt_version=ifelse([$1], ,0.1.0,$1)
29 AC_MSG_CHECKING(for libmcrypt - version >= $min_libmcrypt_version)
30 no_libmcrypt=""
31 if test "$LIBMCRYPT_CONFIG" = "no" ; then
32 no_libmcrypt=yes
33 else
34 LIBMCRYPT_CFLAGS=`$LIBMCRYPT_CONFIG $libmcrypt_config_args --cflags`
35 LIBMCRYPT_LIBS=`$LIBMCRYPT_CONFIG $libmcrypt_config_args --libs`
36 libmcrypt_config_version=`$LIBMCRYPT_CONFIG $libmcrypt_config_args --version`
37
38
39 ac_save_CFLAGS="$CFLAGS"
40 ac_save_LIBS="$LIBS"
41 CFLAGS="$CFLAGS $LIBMCRYPT_CFLAGS"
42 LIBS="$LIBS $LIBMCRYPT_LIBS"
43 dnl
44 dnl Now check if the installed libmcrypt is sufficiently new. Also sanity
45 dnl checks the results of libmcrypt-config to some extent
46 dnl
47 rm -f conf.libmcrypttest
48 AC_TRY_RUN([
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include <mcrypt.h>
53
54 int
55 main ()
56 {
57 #if MCRYPT_API_VERSION <= 20010201
58 printf("\n*** An old version of libmcrypt was found. Please upgrade at least to 2.4.10\n");
59 return 1;
60 #endif
61 system ("touch conf.libmcrypttest");
62
63 if( strcmp( mcrypt_check_version(NULL), "$libmcrypt_config_version" ) )
64 {
65 printf("\n*** 'libmcrypt-config --version' returned %s, but LIBMCRYPT (%s)\n",
66 "$libmcrypt_config_version", mcrypt_check_version(NULL) );
67 printf("*** was found! If libmcrypt-config was correct, then it is best\n");
68 printf("*** to remove the old version of LIBMCRYPT. You may also be able to fix the error\n");
69 printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
70 printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
71 printf("*** required on your system.\n");
72 printf("*** If libmcrypt-config was wrong, set the environment variable LIBMCRYPT_CONFIG\n");
73 printf("*** to point to the correct copy of libmcrypt-config, and remove the file config.cache\n");
74 printf("*** before re-running configure\n");
75 }
76 else if ( strcmp(mcrypt_check_version(NULL), LIBMCRYPT_VERSION ) )
77 {
78 printf("\n*** LIBMCRYPT header file (version %s) does not match\n", LIBMCRYPT_VERSION);
79 printf("*** library (version %s)\n", mcrypt_check_version(NULL) );
80 }
81 else
82 {
83 if ( mcrypt_check_version( "$min_libmcrypt_version" ) )
84 {
85 return 0;
86 }
87 else
88 {
89 printf("no\n*** An old version of LIBMCRYPT (%s) was found.\n",
90 mcrypt_check_version(NULL) );
91 printf("*** You need a version of LIBMCRYPT newer than %s. The latest version of\n",
92 "$min_libmcrypt_version" );
93 printf("*** LIBMCRYPT is always available from ftp://mcrypt.hellug.gr/pub/mcrypt.\n");
94 printf("*** \n");
95 printf("*** If you have already installed a sufficiently new version, this error\n");
96 printf("*** probably means that the wrong copy of the libmcrypt-config shell script is\n");
97 printf("*** being found. The easiest way to fix this is to remove the old version\n");
98 printf("*** of LIBMCRYPT, but you can also set the LIBMCRYPT_CONFIG environment to point to the\n");
99 printf("*** correct copy of libmcrypt-config. (In this case, you will have to\n");
100 printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
101 printf("*** so that the correct libraries are found at run-time))\n");
102 }
103 }
104 return 1;
105 }
106 ],, no_libmcrypt=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
107 CFLAGS="$ac_save_CFLAGS"
108 LIBS="$ac_save_LIBS"
109 fi
110
111 if test "x$no_libmcrypt" = x ; then
112 AC_MSG_RESULT(yes)
113 ifelse([$2], , :, [$2])
114 else
115 if test -f conf.libmcrypttest ; then
116 :
117 else
118 AC_MSG_RESULT(no)
119 fi
120 if test "$LIBMCRYPT_CONFIG" = "no" ; then
121 echo "*** The libmcrypt-config script installed by LIBMCRYPT could not be found"
122 echo "*** If LIBMCRYPT was installed in PREFIX, make sure PREFIX/bin is in"
123 echo "*** your path, or set the LIBMCRYPT_CONFIG environment variable to the"
124 echo "*** full path to libmcrypt-config."
125 else
126 if test -f conf.libmcrypttest ; then
127 :
128 else
129 echo "*** Could not run libmcrypt test program, checking why..."
130 CFLAGS="$CFLAGS $LIBMCRYPT_CFLAGS"
131 LIBS="$LIBS $LIBMCRYPT_LIBS"
132 AC_TRY_LINK([
133 #include <stdio.h>
134 #include <stdlib.h>
135 #include <string.h>
136 #include <mcrypt.h>
137 ], [ return !!mcrypt_check_version(NULL); ],
138 [ echo "*** The test program compiled, but did not run. This usually means"
139 echo "*** that the run-time linker is not finding LIBMCRYPT or finding the wrong"
140 echo "*** version of LIBMCRYPT. If it is not finding LIBMCRYPT, you'll need to set your"
141 echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
142 echo "*** to the installed location Also, make sure you have run ldconfig if that"
143 echo "*** is required on your system"
144 echo "***"
145 echo "*** If you have an old version installed, it is best to remove it, although"
146 echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
147 echo "***" ],
148 [ echo "*** The test program failed to compile or link. See the file config.log for the"
149 echo "*** exact error that occured. This usually means LIBMCRYPT was incorrectly installed"
150 echo "*** or that you have moved LIBMCRYPT since it was installed. In the latter case, you"
151 echo "*** may want to edit the libmcrypt-config script: $LIBMCRYPT_CONFIG" ])
152 CFLAGS="$ac_save_CFLAGS"
153 LIBS="$ac_save_LIBS"
154 fi
155 fi
156 LIBMCRYPT_CFLAGS=""
157 LIBMCRYPT_LIBS=""
158 ifelse([$3], , :, [$3])
159 fi
160 AC_SUBST(LIBMCRYPT_CFLAGS)
161 AC_SUBST(LIBMCRYPT_LIBS)
162 ])
163
164 dnl *-*wedit:notab*-* Please keep this as the last line.

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