[Fontconfig] libtool -no-undefined: why windows only?

[Christian Biesinger]

Hi,
I saw that fontconfig uses the -no-undefined flag only on windows. Why 
is that? It seems to me like that would be a useful flag on all 
platforms, to avoid unintentionally leaving undefined references in the 
library.

But the real reason I'm sending this mail is that it causes problems for 
me on BeOS - not setting that flag means that libtool will not create 
shared libraries on some platforms, only static ones.

With the attached patch, fontconfig still compiles fine for me on linux 
(FC4). It would be great if you could apply that patch.

thanks,
-biesi
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Index: src/Makefile.am
===================================================================
RCS file: /cvs/fontconfig/fontconfig/src/Makefile.am,v
retrieving revision 1.12
diff -p -u -6 -r1.12 Makefile.am
--- src/Makefile.am	5 Dec 2004 05:49:20 -0000	1.12
+++ src/Makefile.am	30 Sep 2005 00:53:01 -0000
@@ -20,13 +20,12 @@
 # DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 # TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
 if OS_WIN32
 
-no_undefined = -no-undefined
 export_symbols = -export-symbols fontconfig.def
 
 # gcc import library install/uninstall
 
 install-libtool-import-lib: 
 	$(INSTALL) .libs/libfontconfig.dll.a $(DESTDIR)$(libdir)
@@ -97,13 +96,13 @@ libfontconfig_la_SOURCES = \
 	fcstr.c \
 	fcxml.c
 
 lib_LTLIBRARIES = libfontconfig.la
 
 libfontconfig_la_LDFLAGS =			\
-	-version-info @LT_VERSION_INFO@ $(no_undefined) $(export_symbols)
+	-version-info @LT_VERSION_INFO@ -no-undefined $(export_symbols)
 
 libfontconfig_la_LIBADD = $(FREETYPE_LIBS) $(EXPAT_LIBS)
 
 install-data-local: install-ms-import-lib install-libtool-import-lib
 
 uninstall-local: uninstall-ms-import-lib uninstall-libtool-import-lib