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Diffstat (limited to 'configure')
-rwxr-xr-xconfigure542
1 files changed, 188 insertions, 354 deletions
diff --git a/configure b/configure
index cb4a288d..bb3ea6c3 100755
--- a/configure
+++ b/configure
@@ -612,19 +612,15 @@ Cairo_LIBS
Cairo_CFLAGS
libPNG_LIBS
libPNG_CFLAGS
+PKG_CONFIG_LIBDIR
+PKG_CONFIG_PATH
HAVE_GTK_FALSE
HAVE_GTK_TRUE
GTK_LIBS
GTK_CFLAGS
+PKG_CONFIG
HAVE_OPENCL_FALSE
HAVE_OPENCL_TRUE
-GSL_version_LIBS
-GSL_version_CFLAGS
-GSL_LIBS
-GSL_CFLAGS
-PKG_CONFIG_LIBDIR
-PKG_CONFIG_PATH
-PKG_CONFIG
LIBGNU_LTLIBDEPS
LIBGNU_LIBDEPS
gltests_WITNESS
@@ -809,6 +805,7 @@ enable_option_checking
enable_dependency_tracking
enable_silent_rules
with_hdf5
+with_gsl
enable_opencl
enable_gtk
enable_gtktest
@@ -829,10 +826,6 @@ CPP
PKG_CONFIG
PKG_CONFIG_PATH
PKG_CONFIG_LIBDIR
-GSL_CFLAGS
-GSL_LIBS
-GSL_version_CFLAGS
-GSL_version_LIBS
libPNG_CFLAGS
libPNG_LIBS
Cairo_CFLAGS
@@ -1475,6 +1468,7 @@ Optional Packages:
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
--without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no)
--with-hdf5 specify location of HDF5 library
+ --with-gsl specify location of GSL
--with-libtiff specify location of libTIFF library
Some influential environment variables:
@@ -1491,12 +1485,6 @@ Some influential environment variables:
directories to add to pkg-config's search path
PKG_CONFIG_LIBDIR
path overriding pkg-config's built-in search path
- GSL_CFLAGS C compiler flags for GSL, overriding pkg-config
- GSL_LIBS linker flags for GSL, overriding pkg-config
- GSL_version_CFLAGS
- C compiler flags for GSL_version, overriding pkg-config
- GSL_version_LIBS
- linker flags for GSL_version, overriding pkg-config
libPNG_CFLAGS
C compiler flags for libPNG, overriding pkg-config
libPNG_LIBS linker flags for libPNG, overriding pkg-config
@@ -6220,346 +6208,14 @@ fi
-
-
-
-
-
-if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
- if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
-set dummy ${ac_tool_prefix}pkg-config; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_PKG_CONFIG+set}" = set; then :
- $as_echo_n "(cached) " >&6
-else
- case $PKG_CONFIG in
- [\\/]* | ?:[\\/]*)
- ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
- ;;
- *)
- as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
- ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
- ;;
-esac
-fi
-PKG_CONFIG=$ac_cv_path_PKG_CONFIG
-if test -n "$PKG_CONFIG"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
-$as_echo "$PKG_CONFIG" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_path_PKG_CONFIG"; then
- ac_pt_PKG_CONFIG=$PKG_CONFIG
- # Extract the first word of "pkg-config", so it can be a program name with args.
-set dummy pkg-config; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if test "${ac_cv_path_ac_pt_PKG_CONFIG+set}" = set; then :
- $as_echo_n "(cached) " >&6
-else
- case $ac_pt_PKG_CONFIG in
- [\\/]* | ?:[\\/]*)
- ac_cv_path_ac_pt_PKG_CONFIG="$ac_pt_PKG_CONFIG" # Let the user override the test with a path.
- ;;
- *)
- as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
- ac_cv_path_ac_pt_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
- ;;
-esac
-fi
-ac_pt_PKG_CONFIG=$ac_cv_path_ac_pt_PKG_CONFIG
-if test -n "$ac_pt_PKG_CONFIG"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5
-$as_echo "$ac_pt_PKG_CONFIG" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_pt_PKG_CONFIG" = x; then
- PKG_CONFIG=""
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- PKG_CONFIG=$ac_pt_PKG_CONFIG
- fi
-else
- PKG_CONFIG="$ac_cv_path_PKG_CONFIG"
-fi
-
-fi
-if test -n "$PKG_CONFIG"; then
- _pkg_min_version=0.9.0
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5
-$as_echo_n "checking pkg-config is at least version $_pkg_min_version... " >&6; }
- if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
- else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
- PKG_CONFIG=""
- fi
-fi
-
-pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GSL" >&5
-$as_echo_n "checking for GSL... " >&6; }
-
-if test -n "$GSL_CFLAGS"; then
- pkg_cv_GSL_CFLAGS="$GSL_CFLAGS"
- elif test -n "$PKG_CONFIG"; then
- if test -n "$PKG_CONFIG" && \
- { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"gsl\""; } >&5
- ($PKG_CONFIG --exists --print-errors "gsl") 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then
- pkg_cv_GSL_CFLAGS=`$PKG_CONFIG --cflags "gsl" 2>/dev/null`
-else
- pkg_failed=yes
-fi
- else
- pkg_failed=untried
-fi
-if test -n "$GSL_LIBS"; then
- pkg_cv_GSL_LIBS="$GSL_LIBS"
- elif test -n "$PKG_CONFIG"; then
- if test -n "$PKG_CONFIG" && \
- { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"gsl\""; } >&5
- ($PKG_CONFIG --exists --print-errors "gsl") 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then
- pkg_cv_GSL_LIBS=`$PKG_CONFIG --libs "gsl" 2>/dev/null`
-else
- pkg_failed=yes
-fi
- else
- pkg_failed=untried
-fi
-
-
-
-if test $pkg_failed = yes; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-
-if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
- _pkg_short_errors_supported=yes
-else
- _pkg_short_errors_supported=no
-fi
- if test $_pkg_short_errors_supported = yes; then
- GSL_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "gsl" 2>&1`
- else
- GSL_PKG_ERRORS=`$PKG_CONFIG --print-errors "gsl" 2>&1`
- fi
- # Put the nasty error message in config.log where it belongs
- echo "$GSL_PKG_ERRORS" >&5
-
-
- as_fn_error $? "GSL is required" "$LINENO" 5
-
-elif test $pkg_failed = untried; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-
- as_fn_error $? "GSL is required" "$LINENO" 5
-
-else
- GSL_CFLAGS=$pkg_cv_GSL_CFLAGS
- GSL_LIBS=$pkg_cv_GSL_LIBS
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-
-fi
-
-pkg_failed=no
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GSL_version" >&5
-$as_echo_n "checking for GSL_version... " >&6; }
-
-if test -n "$GSL_version_CFLAGS"; then
- pkg_cv_GSL_version_CFLAGS="$GSL_version_CFLAGS"
- elif test -n "$PKG_CONFIG"; then
- if test -n "$PKG_CONFIG" && \
- { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"gsl >= 1.13\""; } >&5
- ($PKG_CONFIG --exists --print-errors "gsl >= 1.13") 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then
- pkg_cv_GSL_version_CFLAGS=`$PKG_CONFIG --cflags "gsl >= 1.13" 2>/dev/null`
-else
- pkg_failed=yes
-fi
- else
- pkg_failed=untried
-fi
-if test -n "$GSL_version_LIBS"; then
- pkg_cv_GSL_version_LIBS="$GSL_version_LIBS"
- elif test -n "$PKG_CONFIG"; then
- if test -n "$PKG_CONFIG" && \
- { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"gsl >= 1.13\""; } >&5
- ($PKG_CONFIG --exists --print-errors "gsl >= 1.13") 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then
- pkg_cv_GSL_version_LIBS=`$PKG_CONFIG --libs "gsl >= 1.13" 2>/dev/null`
-else
- pkg_failed=yes
-fi
- else
- pkg_failed=untried
-fi
-
-
-
-if test $pkg_failed = yes; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-
-if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
- _pkg_short_errors_supported=yes
+# Check whether --with-gsl was given.
+if test "${with_gsl+set}" = set; then :
+ withval=$with_gsl; GSL_CFLAGS="-I$withval/include"
+ GSL_LIBS="-L$withval/lib -lgsl -lgslcblas"
else
- _pkg_short_errors_supported=no
+ GSL_LIBS="-lgsl -lgslcblas"
fi
- if test $_pkg_short_errors_supported = yes; then
- GSL_version_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "gsl >= 1.13" 2>&1`
- else
- GSL_version_PKG_ERRORS=`$PKG_CONFIG --print-errors "gsl >= 1.13" 2>&1`
- fi
- # Put the nasty error message in config.log where it belongs
- echo "$GSL_version_PKG_ERRORS" >&5
-
- as_fn_error $? "Package requirements (gsl >= 1.13) were not met:
-
-$GSL_version_PKG_ERRORS
-
-Consider adjusting the PKG_CONFIG_PATH environment variable if you
-installed software in a non-standard prefix.
-
-Alternatively, you may set the environment variables GSL_version_CFLAGS
-and GSL_version_LIBS to avoid the need to call pkg-config.
-See the pkg-config man page for more details." "$LINENO" 5
-
-elif test $pkg_failed = untried; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
- { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "The pkg-config script could not be found or is too old. Make sure it
-is in your PATH or set the PKG_CONFIG environment variable to the full
-path to pkg-config.
-Alternatively, you may set the environment variables GSL_version_CFLAGS
-and GSL_version_LIBS to avoid the need to call pkg-config.
-See the pkg-config man page for more details.
-
-To get pkg-config, see <http://pkg-config.freedesktop.org/>.
-See \`config.log' for more details" "$LINENO" 5; }
-
-else
- GSL_version_CFLAGS=$pkg_cv_GSL_version_CFLAGS
- GSL_version_LIBS=$pkg_cv_GSL_version_LIBS
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler flag to ignore unused libraries" >&5
-$as_echo_n "checking for C compiler flag to ignore unused libraries... " >&6; }
-if test "${gl_cv_prog_c_ignore_unused_libraries+set}" = set; then :
- $as_echo_n "(cached) " >&6
-else
- gl_cv_prog_c_ignore_unused_libraries=none
- gl_saved_ldflags=$LDFLAGS
- gl_saved_libs=$LIBS
- # Link with -lm to detect binutils 2.16 bug with --as-needed; see
- # <http://lists.gnu.org/archive/html/bug-gnulib/2006-06/msg00131.html>.
- LIBS="$LIBS -lm"
- # Use long option sequences like '-z ignore' to test for the feature,
- # to forestall problems with linkers that have -z, -i, -g, -n, etc. flags.
- # GCC + binutils likes '-Wl,--as-needed'.
- # GCC + Solaris ld likes '-Wl,-z,ignore'.
- # Sun C likes '-Wl,-z,ignore'. '-z ignore' is accepted but has no effect.
- # Don't try bare '--as-needed'; nothing likes it and the HP-UX 11.11
- # native cc issues annoying warnings and then ignores it,
- # which would cause us to incorrectly conclude that it worked.
- for gl_flags in '-Wl,--as-needed' \
- '-Wl,-z,ignore' \
- '-z ignore'
-
- do
- LDFLAGS="$gl_flags $LDFLAGS"
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-int
-main ()
-{
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- gl_cv_prog_c_ignore_unused_libraries=$gl_flags
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
- LDFLAGS=$gl_saved_ldflags
- test "$gl_cv_prog_c_ignore_unused_libraries" != none &&
- break
- done
- LIBS=$gl_saved_libs
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gl_cv_prog_c_ignore_unused_libraries" >&5
-$as_echo "$gl_cv_prog_c_ignore_unused_libraries" >&6; }
- IGNORE_UNUSED_LIBRARIES_CFLAGS=
- if test "$gl_cv_prog_c_ignore_unused_libraries" != none; then
- IGNORE_UNUSED_LIBRARIES_CFLAGS="$gl_cv_prog_c_ignore_unused_libraries"
- fi
-
-
-
-fi
# Check whether --enable-opencl was given.
@@ -6979,6 +6635,125 @@ if test "${enable_png+set}" = set; then :
enableval=$enable_png;
fi
+
+
+
+
+
+
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
+set dummy ${ac_tool_prefix}pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_path_PKG_CONFIG+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $PKG_CONFIG in
+ [\\/]* | ?:[\\/]*)
+ ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
+ ;;
+ *)
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+ ;;
+esac
+fi
+PKG_CONFIG=$ac_cv_path_PKG_CONFIG
+if test -n "$PKG_CONFIG"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+$as_echo "$PKG_CONFIG" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_path_PKG_CONFIG"; then
+ ac_pt_PKG_CONFIG=$PKG_CONFIG
+ # Extract the first word of "pkg-config", so it can be a program name with args.
+set dummy pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_path_ac_pt_PKG_CONFIG+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $ac_pt_PKG_CONFIG in
+ [\\/]* | ?:[\\/]*)
+ ac_cv_path_ac_pt_PKG_CONFIG="$ac_pt_PKG_CONFIG" # Let the user override the test with a path.
+ ;;
+ *)
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_path_ac_pt_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+ ;;
+esac
+fi
+ac_pt_PKG_CONFIG=$ac_cv_path_ac_pt_PKG_CONFIG
+if test -n "$ac_pt_PKG_CONFIG"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_pt_PKG_CONFIG" >&5
+$as_echo "$ac_pt_PKG_CONFIG" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_pt_PKG_CONFIG" = x; then
+ PKG_CONFIG=""
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ PKG_CONFIG=$ac_pt_PKG_CONFIG
+ fi
+else
+ PKG_CONFIG="$ac_cv_path_PKG_CONFIG"
+fi
+
+fi
+if test -n "$PKG_CONFIG"; then
+ _pkg_min_version=0.9.0
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5
+$as_echo_n "checking pkg-config is at least version $_pkg_min_version... " >&6; }
+ if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ PKG_CONFIG=""
+ fi
+fi
if test "x$enable_png" != "xno"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
@@ -7462,6 +7237,65 @@ $as_echo "yes" >&6; }
fi
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler flag to ignore unused libraries" >&5
+$as_echo_n "checking for C compiler flag to ignore unused libraries... " >&6; }
+if test "${gl_cv_prog_c_ignore_unused_libraries+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ gl_cv_prog_c_ignore_unused_libraries=none
+ gl_saved_ldflags=$LDFLAGS
+ gl_saved_libs=$LIBS
+ # Link with -lm to detect binutils 2.16 bug with --as-needed; see
+ # <http://lists.gnu.org/archive/html/bug-gnulib/2006-06/msg00131.html>.
+ LIBS="$LIBS -lm"
+ # Use long option sequences like '-z ignore' to test for the feature,
+ # to forestall problems with linkers that have -z, -i, -g, -n, etc. flags.
+ # GCC + binutils likes '-Wl,--as-needed'.
+ # GCC + Solaris ld likes '-Wl,-z,ignore'.
+ # Sun C likes '-Wl,-z,ignore'. '-z ignore' is accepted but has no effect.
+ # Don't try bare '--as-needed'; nothing likes it and the HP-UX 11.11
+ # native cc issues annoying warnings and then ignores it,
+ # which would cause us to incorrectly conclude that it worked.
+ for gl_flags in '-Wl,--as-needed' \
+ '-Wl,-z,ignore' \
+ '-z ignore'
+
+ do
+ LDFLAGS="$gl_flags $LDFLAGS"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ gl_cv_prog_c_ignore_unused_libraries=$gl_flags
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LDFLAGS=$gl_saved_ldflags
+ test "$gl_cv_prog_c_ignore_unused_libraries" != none &&
+ break
+ done
+ LIBS=$gl_saved_libs
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gl_cv_prog_c_ignore_unused_libraries" >&5
+$as_echo "$gl_cv_prog_c_ignore_unused_libraries" >&6; }
+ IGNORE_UNUSED_LIBRARIES_CFLAGS=
+ if test "$gl_cv_prog_c_ignore_unused_libraries" != none; then
+ IGNORE_UNUSED_LIBRARIES_CFLAGS="$gl_cv_prog_c_ignore_unused_libraries"
+ fi
+
+
+
+
CFLAGS="$CFLAGS $HDF5_CFLAGS $GSL_CFLAGS $OPENCL_CFLAGS -pthread $GTK_CFLAGS"
CFLAGS="$CFLAGS $LIBTIFF_CFLAGS -D_GNU_SOURCE $libPNG_CFLAGS $Cairo_CFLAGS"
CFLAGS="$CFLAGS $GDK_pixbuf_CFLAGS $GDK_pixbuf_2_CFLAGS"