aclocal.m4

dnl aclocal.m4 generated automatically by aclocal 1.4-p5

dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
dnl PARTICULAR PURPOSE.

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)

,   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 ${LIBADD_DL}"
    AC_DEFINE(LIBMCRYPT24))
  else
dnl libmcrypt-config was found
    LIBMCRYPT_CFLAGS=`$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)
  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 environment 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 environment 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 occurred. 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
  AC_SUBST(LIBMCRYPT_CFLAGS)
  AC_SUBST(LIBMCRYPT_LIBS)
])

dnl *-*wedit:notab*-*  Please keep this as the last line.