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# Configure path for the GNU Scientific Library
# Christopher R. Gabriel <cgabriel@linux.it>, April 2000
AC_DEFUN([AX_PATH_GSL],
[
AC_ARG_WITH(gsl-prefix,[ --with-gsl-prefix=PFX Prefix where GSL is installed (optional)],
gsl_prefix="$withval", gsl_prefix="")
AC_ARG_WITH(gsl-exec-prefix,[ --with-gsl-exec-prefix=PFX Exec prefix where GSL is installed (optional)],
gsl_exec_prefix="$withval", gsl_exec_prefix="")
AC_ARG_ENABLE(gsltest, [ --disable-gsltest Do not try to compile and run a test GSL program],
, enable_gsltest=yes)
if test "x${GSL_CONFIG+set}" != xset ; then
if test "x$gsl_prefix" != x ; then
GSL_CONFIG="$gsl_prefix/bin/gsl-config"
fi
if test "x$gsl_exec_prefix" != x ; then
GSL_CONFIG="$gsl_exec_prefix/bin/gsl-config"
fi
fi
AC_PATH_PROG(GSL_CONFIG, gsl-config, no)
min_gsl_version=ifelse([$1], ,0.2.5,$1)
AC_MSG_CHECKING(for GSL - version >= $min_gsl_version)
no_gsl=""
if test "$GSL_CONFIG" = "no" ; then
no_gsl=yes
else
GSL_CFLAGS=`$GSL_CONFIG --cflags`
GSL_LIBS=`$GSL_CONFIG --libs`
gsl_major_version=`$GSL_CONFIG --version | \
sed 's/^\([[0-9]]*\).*/\1/'`
if test "x${gsl_major_version}" = "x" ; then
gsl_major_version=0
fi
gsl_minor_version=`$GSL_CONFIG --version | \
sed 's/^\([[0-9]]*\)\.\{0,1\}\([[0-9]]*\).*/\2/'`
if test "x${gsl_minor_version}" = "x" ; then
gsl_minor_version=0
fi
gsl_micro_version=`$GSL_CONFIG --version | \
sed 's/^\([[0-9]]*\)\.\{0,1\}\([[0-9]]*\)\.\{0,1\}\([[0-9]]*\).*/\3/'`
if test "x${gsl_micro_version}" = "x" ; then
gsl_micro_version=0
fi
if test "x$enable_gsltest" = "xyes" ; then
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $GSL_CFLAGS"
LIBS="$LIBS $GSL_LIBS"
rm -f conf.gsltest
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
char* my_strdup (const char *str);
char*
my_strdup (const char *str)
{
char *new_str;
if (str)
{
new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
strcpy (new_str, str);
}
else
new_str = NULL;
return new_str;
}
int main (void)
{
int major = 0, minor = 0, micro = 0;
int n;
char *tmp_version;
system ("touch conf.gsltest");
/* HP/UX 9 (%@#!) writes to sscanf strings */
tmp_version = my_strdup("$min_gsl_version");
n = sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) ;
if (n != 2 && n != 3) {
printf("%s, bad version string\n", "$min_gsl_version");
exit(1);
}
if (($gsl_major_version > major) ||
(($gsl_major_version == major) && ($gsl_minor_version > minor)) ||
(($gsl_major_version == major) && ($gsl_minor_version == minor) && ($gsl_micro_version >= micro)))
{
exit(0);
}
else
{
exit(1);
}
}
],, no_gsl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
if test "x$no_gsl" = x ; then
AC_MSG_RESULT(yes)
ifelse([$2], , :, [$2])
else
AC_MSG_RESULT(no)
if test "$GSL_CONFIG" = "no" ; then
echo "*** The gsl-config script installed by GSL could not be found"
echo "*** If GSL was installed in PREFIX, make sure PREFIX/bin is in"
echo "*** your path, or set the GSL_CONFIG environment variable to the"
echo "*** full path to gsl-config."
else
if test -f conf.gsltest ; then
:
else
echo "*** Could not run GSL test program, checking why..."
CFLAGS="$CFLAGS $GSL_CFLAGS"
LIBS="$LIBS $GSL_LIBS"
AC_TRY_LINK([
#include <stdio.h>
], [ return 0; ],
[ echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding GSL or finding the wrong"
echo "*** version of GSL. If it is not finding GSL, 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 GSL was incorrectly installed"
echo "*** or that you have moved GSL since it was installed. In the latter case, you"
echo "*** may want to edit the gsl-config script: $GSL_CONFIG" ])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
# GSL_CFLAGS=""
# GSL_LIBS=""
ifelse([$3], , :, [$3])
fi
AC_SUBST(GSL_CFLAGS)
AC_SUBST(GSL_LIBS)
rm -f conf.gsltest
])
AU_ALIAS([AM_PATH_GSL], [AX_PATH_GSL])
|
