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dnl Autoconf macros for libtasn1
dnl $id$
# Modified for LIBTASN1 -- nmav
# Configure paths for LIBGCRYPT
# Shamelessly stolen from the one of XDELTA by Owen Taylor
# Werner Koch 99-12-09
dnl AM_PATH_LIBTASN1([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
dnl Test for libtasn1, and define LIBTASN1_CFLAGS and LIBTASN1_LIBS
dnl
AC_DEFUN([AM_PATH_LIBTASN1],
[dnl
dnl Get the cflags and libraries from the libtasn1-config script
dnl
AC_ARG_WITH(libtasn1-prefix,
[ --with-libtasn1-prefix=PFX Prefix where libtasn1 is installed (optional)],
libtasn1_config_prefix="$withval", libtasn1_config_prefix="")
if test x$libtasn1_config_prefix != x ; then
if test x${LIBTASN1_CONFIG+set} != xset ; then
LIBTASN1_CONFIG=$libtasn1_config_prefix/bin/libtasn1-config
fi
fi
AC_PATH_PROG(LIBTASN1_CONFIG, libtasn1-config, no)
min_libtasn1_version=ifelse([$1], ,0.1.0,$1)
AC_MSG_CHECKING(for libtasn1 - version >= $min_libtasn1_version)
no_libtasn1=""
if test "$LIBTASN1_CONFIG" = "no" ; then
no_libtasn1=yes
else
LIBTASN1_CFLAGS=`$LIBTASN1_CONFIG $libtasn1_config_args --cflags`
LIBTASN1_LIBS=`$LIBTASN1_CONFIG $libtasn1_config_args --libs`
libtasn1_config_version=`$LIBTASN1_CONFIG $libtasn1_config_args --version`
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $LIBTASN1_CFLAGS"
LIBS="$LIBS $LIBTASN1_LIBS"
dnl
dnl Now check if the installed libtasn1 is sufficiently new. Also sanity
dnl checks the results of libtasn1-config to some extent
dnl
rm -f conf.libtasn1test
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libtasn1.h>
int
main ()
{
system ("touch conf.libtasn1test");
if( strcmp( asn1_check_version(NULL), "$libtasn1_config_version" ) )
{
printf("\n*** 'libtasn1-config --version' returned %s, but LIBTASN1 (%s)\n",
"$libtasn1_config_version", asn1_check_version(NULL) );
printf("*** was found! If libtasn1-config was correct, then it is best\n");
printf("*** to remove the old version of LIBTASN1. You may also be able to fix the error\n");
printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
printf("*** required on your system.\n");
printf("*** If libtasn1-config was wrong, set the environment variable LIBTASN1_CONFIG\n");
printf("*** to point to the correct copy of libtasn1-config, and remove the file config.cache\n");
printf("*** before re-running configure\n");
}
else if ( strcmp(asn1_check_version(NULL), LIBTASN1_VERSION ) )
{
printf("\n*** LIBTASN1 header file (version %s) does not match\n", LIBTASN1_VERSION);
printf("*** library (version %s)\n", asn1_check_version(NULL) );
}
else
{
if ( asn1_check_version( "$min_libtasn1_version" ) )
{
return 0;
}
else
{
printf("no\n*** An old version of LIBTASN1 (%s) was found.\n",
asn1_check_version(NULL) );
printf("*** You need a version of LIBTASN1 newer than %s. The latest version of\n",
"$min_libtasn1_version" );
printf("*** LIBTASN1 is always available from ftp://gnutls.hellug.gr/pub/gnutls/libtasn1.\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 libtasn1-config shell script is\n");
printf("*** being found. The easiest way to fix this is to remove the old version\n");
printf("*** of LIBTASN1, but you can also set the LIBTASN1_CONFIG environment to point to the\n");
printf("*** correct copy of libtasn1-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;
}
],, no_libtasn1=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
if test "x$no_libtasn1" = x ; then
AC_MSG_RESULT(yes)
ifelse([$2], , :, [$2])
else
if test -f conf.libtasn1test ; then
:
else
AC_MSG_RESULT(no)
fi
if test "$LIBTASN1_CONFIG" = "no" ; then
echo "*** The libtasn1-config script installed by LIBTASN1 could not be found"
echo "*** If LIBTASN1 was installed in PREFIX, make sure PREFIX/bin is in"
echo "*** your path, or set the LIBTASN1_CONFIG environment variable to the"
echo "*** full path to libtasn1-config."
else
if test -f conf.libtasn1test ; then
:
else
echo "*** Could not run libtasn1 test program, checking why..."
CFLAGS="$CFLAGS $LIBTASN1_CFLAGS"
LIBS="$LIBS $LIBTASN1_LIBS"
AC_TRY_LINK([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libtasn1.h>
], [ return !!asn1_check_version(NULL); ],
[ echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding LIBTASN1 or finding the wrong"
echo "*** version of LIBTASN1. If it is not finding LIBTASN1, 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 LIBTASN1 was incorrectly installed"
echo "*** or that you have moved LIBTASN1 since it was installed. In the latter case, you"
echo "*** may want to edit the libtasn1-config script: $LIBTASN1_CONFIG" ])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
LIBTASN1_CFLAGS=""
LIBTASN1_LIBS=""
ifelse([$3], , :, [$3])
fi
rm -f conf.libtasn1test
AC_SUBST(LIBTASN1_CFLAGS)
AC_SUBST(LIBTASN1_LIBS)
])
dnl *-*wedit:notab*-* Please keep this as the last line.
|
