| # Configure path for the GNU Scientific Library |
| # Christopher R. Gabriel <cgabriel@linux.it>, April 2000 |
| |
| |
| AC_DEFUN([AM_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 |
| { |
| printf("\n*** 'gsl-config --version' returned %d.%d.%d, but the minimum version\n", $gsl_major_version, $gsl_minor_version, $gsl_micro_version); |
| printf("*** of GSL required is %d.%d.%d. If gsl-config is correct, then it is\n", major, minor, micro); |
| printf("*** best to upgrade to the required version.\n"); |
| printf("*** If gsl-config was wrong, set the environment variable GSL_CONFIG\n"); |
| printf("*** to point to the correct copy of gsl-config, and remove the file\n"); |
| printf("*** config.cache before re-running configure\n"); |
| 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 |
| ]) |
| |
| |