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

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Revision 1.1 - (hide annotations)
Wed May 16 08:55:12 2001 UTC (22 years, 10 months ago) by nmav
Branch: MAIN
added libmcrypt-config so programs that use libmcrypt can be configured
easier

1 nmav 1.1 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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