# Configure paths for LIBHNJ
# Chris Lahey 99-2-5
# stolen from Manish Singh again
# stolen back from Frank Belew
# stolen from Manish Singh
# Shamelessly stolen from Owen Taylor
dnl AM_PATH_LIBHNJ([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for LIBHNJ, and define LIBHNJ_CFLAGS and LIBHNJ_LIBS
dnl
AC_DEFUN(AM_PATH_LIBHNJ,
[dnl
dnl Get the cflags and libraries from the libhnj-config script
dnl
AC_ARG_WITH(libhnj-prefix,[ --with-libhnj-prefix=PFX Prefix where LIBHNJ is installed (optional)],
libhnj_prefix="$withval", libhnj_prefix="")
AC_ARG_WITH(libhnj-exec-prefix,[ --with-libhnj-exec-prefix=PFX Exec prefix where LIBHNJ is installed (optional)],
libhnj_exec_prefix="$withval", libhnj_exec_prefix="")
AC_ARG_ENABLE(libhnjtest, [ --disable-libhnjtest Do not try to compile and run a test LIBHNJ program],
, enable_libhnjtest=yes)
if test x$libhnj_exec_prefix != x ; then
libhnj_args="$libhnj_args --exec-prefix=$libhnj_exec_prefix"
if test x${LIBHNJ_CONFIG+set} != xset ; then
LIBHNJ_CONFIG=$libhnj_exec_prefix/bin/libhnj-config
fi
fi
if test x$libhnj_prefix != x ; then
libhnj_args="$libhnj_args --prefix=$libhnj_prefix"
if test x${LIBHNJ_CONFIG+set} != xset ; then
LIBHNJ_CONFIG=$libhnj_prefix/bin/libhnj-config
fi
fi
AC_PATH_PROG(LIBHNJ_CONFIG, libhnj-config, no)
min_libhnj_version=ifelse([$1], ,0.1.0,$1)
AC_MSG_CHECKING(for LIBHNJ - version >= $min_libhnj_version)
no_libhnj=""
if test "$LIBHNJ_CONFIG" = "no" ; then
no_libhnj=yes
else
LIBHNJ_CFLAGS=`$LIBHNJ_CONFIG $libhnjconf_args --cflags`
LIBHNJ_LIBS=`$LIBHNJ_CONFIG $libhnjconf_args --libs`
libhnj_major_version=`$LIBHNJ_CONFIG $libhnj_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
libhnj_minor_version=`$LIBHNJ_CONFIG $libhnj_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
libhnj_micro_version=`$LIBHNJ_CONFIG $libhnj_config_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
if test "x$enable_libhnjtest" = "xyes" ; then
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $LIBHNJ_CFLAGS"
LIBS="$LIBS $LIBHNJ_LIBS"
dnl
dnl Now check if the installed LIBHNJ is sufficiently new. (Also sanity
dnl checks the results of libhnj-config to some extent
dnl
rm -f conf.libhnjtest
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libhnj/just.h>
char*
my_strdup (char *str)
{
char *new_str;
if (str)
{
new_str = malloc ((strlen (str) + 1) * sizeof(char));
strcpy (new_str, str);
}
else
new_str = NULL;
return new_str;
}
int main ()
{
int major, minor, micro;
char *tmp_version;
system ("touch conf.libhnjtest");
/* HP/UX 9 (%@#!) writes to sscanf strings */
tmp_version = my_strdup("$min_libhnj_version");
if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
printf("%s, bad version string\n", "$min_libhnj_version");
exit(1);
}
if (($libhnj_major_version > major) ||
(($libhnj_major_version == major) && ($libhnj_minor_version > minor)) ||
(($libhnj_major_version == major) && ($libhnj_minor_version == minor) && ($libhnj_micro_version >= micro)))
{
return 0;
}
else
{
printf("\n*** 'libhnj-config --version' returned %d.%d.%d, but the minimum version\n", $libhnj_major_version, $libhnj_minor_version, $libhnj_micro_version);
printf("*** of LIBHNJ required is %d.%d.%d. If libhnj-config is correct, then it is\n", major, minor, micro);
printf("*** best to upgrade to the required version.\n");
printf("*** If libhnj-config was wrong, set the environment variable LIBHNJ_CONFIG\n");
printf("*** to point to the correct copy of libhnj-config, and remove the file\n");
printf("*** config.cache before re-running configure\n");
return 1;
}
}
],, no_libhnj=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
if test "x$no_libhnj" = x ; then
AC_MSG_RESULT(yes)
ifelse([$2], , :, [$2])
else
AC_MSG_RESULT(no)
if test "$LIBHNJ_CONFIG" = "no" ; then
echo "*** The libhnj-config script installed by LIBHNJ could not be found"
echo "*** If LIBHNJ was installed in PREFIX, make sure PREFIX/bin is in"
echo "*** your path, or set the LIBHNJ_CONFIG environment variable to the"
echo "*** full path to libhnj-config."
else
if test -f conf.libhnjtest ; then
:
else
echo "*** Could not run LIBHNJ test program, checking why..."
CFLAGS="$CFLAGS $LIBHNJ_CFLAGS"
LIBS="$LIBS $LIBHNJ_LIBS"
AC_TRY_LINK([
#include <stdio.h>
#include <libhnj/just.h>
], [ return 0; ],
[ echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding LIBHNJ or finding the wrong"
echo "*** version of LIBHNJ. If it is not finding LIBHNJ, 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 "*** The test program failed to compile or link. See the file config.log for the"
echo "*** exact error that occured. This usually means LIBHNJ was incorrectly installed"
echo "*** or that you have moved LIBHNJ since it was installed. In the latter case, you"
echo "*** may want to edit the libhnj-config script: $LIBHNJ_CONFIG" ])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
LIBHNJ_CFLAGS=""
LIBHNJ_LIBS=""
ifelse([$3], , :, [$3])
fi
AC_SUBST(LIBHNJ_CFLAGS)
AC_SUBST(LIBHNJ_LIBS)
rm -f conf.libhnjtest
])
