[PATCH] sh-linux (Was: Fix libgcc symbols for sh4)

[kaz Kojima <kkojima at rr dot iij4u dot or dot jp>]

Hi,

The appended patch is a workaround for the problem pointed out by
Dan Kegel:
<URL:http://gcc.gnu.org/ml/gcc-patches/2003-08/msg01255.html>.
I'd like to check it in to the mainline if there are no objections.  
It's not the ideal solution but anyway works on sh-linux over a year.
Bootstrapped and regtested on sh4-unknown-linux-gnu.

Regards,
	kaz
--
2003-10-05  Kaz Kojima  <kkojima@gcc.gnu.org>

	* config/sh/t-linux (SHLIB_LINK): Override to use a linker script
	libgcc_s.so.
	(SHLIB_INSTALL): Likewise.

diff -u3prN ORIG/gcc/gcc/config/sh/t-linux LOCAL/gcc/gcc/config/sh/t-linux
--- ORIG/gcc/gcc/config/sh/t-linux	Sun Dec 22 08:26:16 2002
+++ LOCAL/gcc/gcc/config/sh/t-linux	Sun Sep 28 16:53:33 2003
@@ -13,3 +13,23 @@ EXTRA_MULTILIB_PARTS= crtbegin.o crtend.
 # Override t-slibgcc-elf-ver to export some libgcc symbols with
 # the symbol versions that glibc used.
 SHLIB_MAPFILES =  $(srcdir)/libgcc-std.ver $(srcdir)/config/sh/libgcc-glibc.ver
+
+# Override SHLIB_LINK and SHLIB_INSTALL to use linker script
+# libgcc_s.so.
+SHLIB_LINK = $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \
+	-Wl,--soname=$(SHLIB_SONAME) \
+	-Wl,--version-script=$(SHLIB_MAP) \
+	-o $(SHLIB_NAME) @multilib_flags@ $(SHLIB_OBJS) $(SHLIB_LC) && \
+	rm -f $(SHLIB_SOLINK) && \
+	(echo "/* GNU ld script"; \
+	 echo "   Use the shared library, but some functions are only in"; \
+	 echo "   the static library.  */"; \
+	 echo "GROUP ( $(SHLIB_SONAME) libgcc.a )" \
+	) > $(SHLIB_SOLINK)
+SHLIB_INSTALL = \
+	$$(SHELL) $$(srcdir)/mkinstalldirs $$(slibdir)$(SHLIB_SLIBDIR_QUAL); \
+	$(INSTALL_DATA) $(SHLIB_NAME) \
+	  $$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SONAME); \
+	rm -f $$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK); \
+	$(INSTALL_DATA) $(SHLIB_SOLINK) \
+	  $$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK)