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julius |
# Build a shared libgcc library with the darwin linker.
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SHLIB_SOVERSION = 1
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SHLIB_VERSTRING = -compatibility_version $(SHLIB_SOVERSION) -current_version $(SHLIB_SOVERSION).0
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SHLIB_EXT = .dylib
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SHLIB_SUFFIX = `if test @multilib_dir@ = ppc64 ; then echo _@multilib_dir@ ; fi`
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SHLIB_INSTALL_NAME = @shlib_base_name@$(SHLIB_SUFFIX).$(SHLIB_SOVERSION)$(SHLIB_EXT)
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SHLIB_SONAME = @shlib_base_name@.$(SHLIB_SOVERSION)$(SHLIB_EXT)
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SHLIB_SOLINK = @shlib_base_name@.so
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SHLIB_MAP = @shlib_map_file@
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SHLIB_OBJS = @shlib_objs@
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SHLIB_DIR = @multilib_dir@
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SHLIB_LC = -lc
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# Darwin only searches in /usr/lib for shared libraries, not in subdirectories,
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# so the libgcc variants have different names not different locations.
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# Note that this version is used for the loader, not the linker; the linker
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# uses the stub versions named by $(LIBGCC).
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SHLIB_LINK = $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -dynamiclib -nodefaultlibs \
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-Wl,-install_name,$(slibdir)/$(SHLIB_INSTALL_NAME) \
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-single_module -o $(SHLIB_DIR)/$(SHLIB_SONAME).tmp \
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-Wl,-exported_symbols_list,$(SHLIB_MAP) \
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$(SHLIB_VERSTRING) \
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@multilib_flags@ $(SHLIB_OBJS) $(SHLIB_LC)
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# $(slibdir) double quoted to protect it from expansion while building
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# libgcc.mk. We want this delayed until actual install time.
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SHLIB_INSTALL = \
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$$(mkinstalldirs) $$(DESTDIR)$$(slibdir); \
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$(INSTALL_DATA) $(SHLIB_SONAME) \
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$$(DESTDIR)$$(slibdir)/$(SHLIB_SONAME)
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SHLIB_MKMAP = $(srcdir)/mkmap-flat.awk
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SHLIB_MKMAP_OPTS = -v leading_underscore=1
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SHLIB_MAPFILES += $(srcdir)/libgcc-std.ver
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# Must use a different directive for hidden visibility in assembly sources.
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ASM_HIDDEN_OP = .private_extern
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# In order to support -mmacosx-version-min, you need to have multiple
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# different libgcc_s libraries that actually get linked against, one for
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# each system version supported. They are 'stub' libraries that
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# contain no code, just a list of exported symbols.
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# The actual use of the libraries is controlled by REAL_LIBGCC_SPEC.
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#
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# This assumes each multilib corresponds to a different architecture.
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libgcc_s.%.dylib : $(SHLIB_VERPFX).%.ver stmp-multilib
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# When building multilibbed target libraries, all the required
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# libraries are expected to exist in the multilib directory.
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MLIBS=`$(GCC_FOR_TARGET) --print-multi-lib \
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| sed -e 's/;.*$$//' -e '/^\.$$/d'` ; \
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for mlib in $$MLIBS ; do \
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rm -f $${mlib}/$@ || exit 1 ; \
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$(LN_S) ../$@ $${mlib}/$@ || exit 1 ; \
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done
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MLIBS=`$(GCC_FOR_TARGET) --print-multi-lib \
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| sed -e 's/;.*$$//' -e '/^\.$$/d'` ; \
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for mlib in '' $$MLIBS ; do \
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$(STRIP_FOR_TARGET) -o $(@)_T$${mlib} \
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-s $(SHLIB_VERPFX).$(*).ver -c -u \
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./$${mlib}/libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT).tmp || exit 1 ; \
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done
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$(LIPO_FOR_TARGET) -output $@ -create $(@)_T*
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rm $(@)_T*
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libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT): stmp-multilib libgcc_s.10.4.dylib \
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libgcc_s.10.5.dylib
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# When building multilibbed target libraries, all the required
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# libraries are expected to exist in the multilib directory.
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MLIBS=`$(GCC_FOR_TARGET) --print-multi-lib \
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| sed -e 's/;.*$$//' -e '/^\.$$/d'` ; \
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for mlib in '' $$MLIBS ; do \
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cp ./$${mlib}/libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT).tmp \
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./libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \
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done
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$(LIPO_FOR_TARGET) -output libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT) \
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-create libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
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rm libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
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# From the point-of-view of the Makefiles, libgcc is built by the 'strip'
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# and 'lipo' commands above.
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LIBGCC=libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT) libgcc_s.10.4.dylib \
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libgcc_s.10.5.dylib stmp-multilib
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INSTALL_FILES=libgcc_s.10.4.dylib libgcc_s.10.5.dylib libgcc_s.1.dylib
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install-darwin-libgcc-stubs : $(INSTALL_FILES) installdirs
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for d in $(INSTALL_FILES) ; do \
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$(INSTALL_DATA) $$d $(DESTDIR)$(slibdir)/$$d || exit 1 ; \
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done
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if [ -f $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib ]; then \
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rm -f $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib; \
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else true; fi
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$(LN_S) libgcc_s.1.dylib \
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$(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib
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if [ -f $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib ]; then \
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rm -f $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib; \
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else true; fi
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$(LN_S) libgcc_s.1.dylib \
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$(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib
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INSTALL_LIBGCC = install-darwin-libgcc-stubs install-multilib
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