135 lines
4.8 KiB
Plaintext
135 lines
4.8 KiB
Plaintext
# 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 $(SHLIB_SOVERSION).0
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SHLIB_EXT = .dylib
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SHLIB_INSTALL_NAME = @shlib_base_name@.$(SHLIB_SOVERSION)$(SHLIB_EXT)
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SHLIB_SONAME = @shlib_base_name@$(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 the versioned members of $(INSTALL_FILES).
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SHLIB_LINK = $(CC) $(LIBGCC2_CFLAGS) -dynamiclib -nodefaultlibs \
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-install_name @shlib_slibdir@/$(SHLIB_INSTALL_NAME) \
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-single_module -o $(SHLIB_DIR)/$(SHLIB_SONAME) \
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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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SHLIB_MKMAP = $(srcdir)/mkmap-flat.awk
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SHLIB_MKMAP_OPTS = -v leading_underscore=1
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SHLIB_MAPFILES = libgcc-std.ver $(srcdir)/config/libgcc-libsystem.ver
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SHLIB_VERPFX = $(srcdir)/config/$(cpu_type)/libgcc-darwin
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# we're only going to build the stubs if the target slib is /usr/lib
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# there is no other case in which they're useful in a live system.
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ifeq (/usr/lib,$(shlib_slibdir))
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LGCC_STUBS = libgcc_s.10.4.dylib libgcc_s.10.5.dylib
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else
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LGCC_STUBS =
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endif
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LGCC_FILES = libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)
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LGCC_FILES += $(LGCC_STUBS)
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LEXT_STUBS = libgcc_ext.10.4$(SHLIB_EXT) libgcc_ext.10.5$(SHLIB_EXT)
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LGCC_FILES += $(LEXT_STUBS)
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INSTALL_FILES=$(LGCC_FILES)
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# we do our own thing
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SHLIB_INSTALL =
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# For the toplevel multilib, build a fat archive including all the multilibs.
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ifeq ($(MULTIBUILDTOP),)
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ifeq ($(enable_shared),yes)
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all: $(INSTALL_FILES)
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install-leaf: install-darwin-libgcc-stubs
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endif
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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 : all-multi $(SHLIB_VERPFX).%.ver libgcc_s$(SHLIB_EXT)
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MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
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for mlib in $$MLIBS ; do \
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$(STRIP) -o $(@)_T$${mlib} \
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-s $(SHLIB_VERPFX).$(*).ver -c -u \
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../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT) || exit 1 ; \
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done
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$(LIPO) -output $@ -create $(@)_T*
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rm $(@)_T*
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libgcc_ext.%.dylib : all-multi $(SHLIB_VERPFX).%.ver libgcc_s$(SHLIB_EXT)
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MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
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for mlib in $$MLIBS ; do \
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$(STRIP) -o $(@)_T$${mlib} \
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-R $(SHLIB_VERPFX).$(*).ver -c -urx \
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../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT) || exit 1 ; \
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done
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$(LIPO) -output $@ -create $(@)_T*
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rm $(@)_T*
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libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT): all-multi libgcc_s$(SHLIB_EXT)
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MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
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for mlib in $$MLIBS ; do \
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cp ../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT) \
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./libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \
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done
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$(LIPO) -output libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT) \
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-create libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
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rm libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
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install-darwin-libgcc-stubs :
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$(mkinstalldirs) $(DESTDIR)$(slibdir)
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for d in $(INSTALL_FILES) ; do \
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$(INSTALL_DATA) $$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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else
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# Do not install shared libraries for any other multilibs. Unless
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# we're putting them in the gcc directory during a build, for
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# compatibility with the pre-top-level layout. In that case we
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# need symlinks.
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ifeq ($(enable_shared),yes)
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all: install-darwin-libgcc-links
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endif
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install-darwin-libgcc-links:
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$(mkinstalldirs) $(gcc_objdir)$(MULTISUBDIR)
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for file in $(INSTALL_FILES); do \
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rm -f $(gcc_objdir)$(MULTISUBDIR)/$$file; \
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$(LN_S) ../$$file $(gcc_objdir)$(MULTISUBDIR)/; \
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done
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rm -f $(gcc_objdir)$(MULTISUBDIR)/libgcc_s_x86_64.1.dylib
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$(LN_S) libgcc_s.1.dylib \
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$(gcc_objdir)$(MULTISUBDIR)/libgcc_s_x86_64.1.dylib
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rm -f $(gcc_objdir)$(MULTISUBDIR)/libgcc_s_ppc64.1.dylib
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$(LN_S) libgcc_s.1.dylib \
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$(gcc_objdir)$(MULTISUBDIR)/libgcc_s_ppc64.1.dylib
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endif
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