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libmcrypt.m4
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dnl Autoconf macros for libmcrypt dnl $id$ # This script detects libmcrypt version and defines # LIBMCRYPT_CFLAGS, LIBMCRYPT_LIBS # and LIBMCRYPT24 or LIBMCRYPT22 depending on libmcrypt version # found. # Modified for LIBMCRYPT -- nmav # Configure paths for LIBGCRYPT # Shamelessly stolen from the one of XDELTA by Owen Taylor # Werner Koch 99-12-09 dnl AM_PATH_LIBMCRYPT([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]]) dnl Test for libmcrypt, and define LIBMCRYPT_CFLAGS and LIBMCRYPT_LIBS dnl AC_DEFUN([AM_PATH_LIBMCRYPT], [dnl dnl Get the cflags and libraries from the libmcrypt-config script dnl AC_ARG_WITH(libmcrypt-prefix, [ --with-libmcrypt-prefix=PFX Prefix where libmcrypt is installed (optional)], libmcrypt_config_prefix="$withval", libmcrypt_config_prefix="") if test x$libmcrypt_config_prefix != x ; then libmcrypt_config_args="$libmcrypt_config_args --prefix=$libmcrypt_config_prefix" if test x${LIBMCRYPT_CONFIG+set} != xset ; then LIBMCRYPT_CONFIG=$libmcrypt_config_prefix/bin/libmcrypt-config fi fi AC_PATH_PROG(LIBMCRYPT_CONFIG, libmcrypt-config, no) min_libmcrypt_version=ifelse([$1], ,2.4.0,$1) AC_MSG_CHECKING(for libmcrypt - version >= $min_libmcrypt_version) no_libmcrypt="" if test "$LIBMCRYPT_CONFIG" = "no" ; then dnl libmcrypt-config was not found (pre 2.4.11 versions) dnl Try to detect libmcrypt version AC_TRY_RUN([ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <mcrypt.h> int main () { #if MCRYPT_API_VERSION <= 19991015 /* version 2.2 */ return 0; #else /* version 2.4 */ return 1; #endif /* 19991015 */ } ], libmcrypt_config_version="2.2.0" if test x$libmcrypt_config_prefix != x ; then TTLIBS="-L${libmcrypt_config_prefix}/libs" TTINCLUDE="-I${libmcrypt_config_prefix}/include" fi LIBMCRYPT_CFLAGS="${TTINCLUDE}" LIBMCRYPT_LIBS="${TTLIBS} -lmcrypt" AC_DEFINE(LIBMCRYPT22, 1, [have libmcrypt 2.2]) , libmcrypt_config_version="2.4.0" if test x$libmcrypt_config_prefix != x ; then TTLIBS="-L${libmcrypt_config_prefix}/libs" TTINCLUDE="-I${libmcrypt_config_prefix}/include" fi LIBMCRYPT_CFLAGS="${TTINCLUDE}" LIBMCRYPT_LIBS="${TTLIBS} -lmcrypt -lltdl ${LIBADD_DL}" AC_DEFINE(LIBMCRYPT24, 1, [have libmcrypt 2.4])) else dnl libmcrypt-config was found LIBMCRYPT_CFLAGS=`$LIBMCRYPT_CONFIG $libmcrypt_config_args --cflags` LIBMCRYPT_LIBS=`$LIBMCRYPT_CONFIG $libmcrypt_config_args --libs` libmcrypt_config_version=`$LIBMCRYPT_CONFIG $libmcrypt_config_args --version` AC_DEFINE(LIBMCRYPT24, 1, [have libmcrypt 2.4]) fi ac_save_CFLAGS="$CFLAGS" ac_save_LIBS="$LIBS" CFLAGS="$CFLAGS $LIBMCRYPT_CFLAGS" LIBS="$LIBS $LIBMCRYPT_LIBS" dnl dnl Now check if the installed libmcrypt is sufficiently new. Also sanity dnl checks the results of libmcrypt-config to some extent dnl rm -f conf.libmcrypttest AC_TRY_RUN([ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <mcrypt.h> #define TWO "2.2" int main () { #if MCRYPT_API_VERSION <= 20010201 #if MCRYPT_API_VERSION <= 19991015 /* version 2.2 */ int x = mcrypt_get_key_size(MCRYPT_TWOFISH_128); system ("touch conf.libmcrypttest"); if( strncmp( TWO, "$min_libmcrypt_version", strlen(TWO))) { printf("\n*** Requested libmcrypt %s, but LIBMCRYPT (%s)\n", "$min_libmcrypt_version", TWO ); printf("*** was found!\n"); return 1; } return 0; #else /* version 2.4 before 11 */ MCRYPT td = mcrypt_module_open("twofish", NULL, "cbc", NULL); system ("touch conf.libmcrypttest"); mcrypt_module_close(td); return 0; #endif /* 19991015 */ #else system ("touch conf.libmcrypttest"); if( strcmp( mcrypt_check_version(NULL), "$libmcrypt_config_version" ) ) { printf("\n*** 'libmcrypt-config --version' returned %s, but LIBMCRYPT (%s)\n", "$libmcrypt_config_version", mcrypt_check_version(NULL) ); printf("*** was found! If libmcrypt-config was correct, then it is best\n"); printf("*** to remove the old version of LIBMCRYPT. You may also be able to fix the error\n"); printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n"); printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n"); printf("*** required on your system.\n"); printf("*** If libmcrypt-config was wrong, set the environment variable LIBMCRYPT_CONFIG\n"); printf("*** to point to the correct copy of libmcrypt-config, and remove the file config.cache\n"); printf("*** before re-running configure\n"); } else if ( strcmp(mcrypt_check_version(NULL), LIBMCRYPT_VERSION ) ) { printf("\n*** LIBMCRYPT header file (version %s) does not match\n", LIBMCRYPT_VERSION); printf("*** library (version %s)\n", mcrypt_check_version(NULL) ); } else { if ( mcrypt_check_version( "$min_libmcrypt_version" ) ) { return 0; } else { printf("no\n*** An old version of LIBMCRYPT (%s) was found.\n", mcrypt_check_version(NULL) ); printf("*** You need a version of LIBMCRYPT newer than %s. The latest version of\n", "$min_libmcrypt_version" ); printf("*** LIBMCRYPT is always available from ftp://mcrypt.hellug.gr/pub/mcrypt.\n"); printf("*** \n"); printf("*** If you have already installed a sufficiently new version, this error\n"); printf("*** probably means that the wrong copy of the libmcrypt-config shell script is\n"); printf("*** being found. The easiest way to fix this is to remove the old version\n"); printf("*** of LIBMCRYPT, but you can also set the LIBMCRYPT_CONFIG environment to point to the\n"); printf("*** correct copy of libmcrypt-config. (In this case, you will have to\n"); printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n"); printf("*** so that the correct libraries are found at run-time)\n"); } } return 1; #endif /* 20010201 */ } ],, no_libmcrypt=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"]) CFLAGS="$ac_save_CFLAGS" LIBS="$ac_save_LIBS" if test "x$no_libmcrypt" = x ; then AC_MSG_RESULT(yes) ifelse([$2], , :, [$2]) else if test -f conf.libmcrypttest ; then : else AC_MSG_RESULT(no) fi if test -f conf.libmcrypttest ; then : else echo "*** Could not run libmcrypt test program, checking why..." CFLAGS="$CFLAGS $LIBMCRYPT_CFLAGS" LIBS="$LIBS $LIBMCRYPT_LIBS" AC_TRY_LINK([ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <mcrypt.h> ], [ #if MCRYPT_API_VERSION <= 20010201 #if MCRYPT_API_VERSION <= 19991015 /* version 2.2 */ int x = mcrypt_get_key_size(MCRYPT_TWOFISH_128); return 0; #else /* version 2.4 before 11 */ MCRYPT td = mcrypt_module_open("twofish", NULL, "cbc", NULL); mcrypt_module_close(td); return 0; #endif /* 19991015 */ #else return !!mcrypt_check_version(NULL); #endif /* 20010201 */ ], [ echo "*** The test program compiled, but did not run. This usually means" echo "*** that the run-time linker is not finding LIBMCRYPT or finding the wrong" echo "*** version of LIBMCRYPT. If it is not finding LIBMCRYPT, you'll need to set your" echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point" echo "*** to the installed location Also, make sure you have run ldconfig if that" echo "*** is required on your system" echo "***" echo "*** If you have an old version installed, it is best to remove it, although" echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH" echo "***" ], [ echo "*** The test program failed to compile or link. See the file config.log for the" echo "*** exact error that occured. This usually means LIBMCRYPT was incorrectly installed" echo "*** or that you have moved LIBMCRYPT since it was installed. In the latter case, you" echo "*** may want to edit the libmcrypt-config script: $LIBMCRYPT_CONFIG" ]) CFLAGS="$ac_save_CFLAGS" LIBS="$ac_save_LIBS" fi LIBMCRYPT_CFLAGS="" LIBMCRYPT_LIBS="" ifelse([$3], , :, [$3]) fi rm -f conf.libmcrypttest AC_SUBST(LIBMCRYPT_CFLAGS) AC_SUBST(LIBMCRYPT_LIBS) ]) dnl *-*wedit:notab*-* Please keep this as the last line.