1# Build a shared libgcc library with the darwin linker. 2SHLIB_SOVERSION = 1 3SHLIB_VERSTRING = -compatibility_version $(SHLIB_SOVERSION) -current_version $(SHLIB_SOVERSION).0 4SHLIB_EXT = .dylib 5SHLIB_SUFFIX = `if test @multilib_dir@ = ppc64 ; then echo _@multilib_dir@ ; fi` 6SHLIB_INSTALL_NAME = @shlib_base_name@$(SHLIB_SUFFIX).$(SHLIB_SOVERSION)$(SHLIB_EXT) 7SHLIB_SONAME = @shlib_base_name@.$(SHLIB_SOVERSION)$(SHLIB_EXT) 8SHLIB_SOLINK = @shlib_base_name@.so 9SHLIB_MAP = @shlib_map_file@ 10SHLIB_OBJS = @shlib_objs@ 11SHLIB_DIR = @multilib_dir@ 12SHLIB_LC = -lc 13 14# Darwin only searches in /usr/lib for shared libraries, not in subdirectories, 15# so the libgcc variants have different names not different locations. 16# Note that this version is used for the loader, not the linker; the linker 17# uses the stub versions named by $(LIBGCC). 18SHLIB_LINK = $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -dynamiclib -nodefaultlibs \ 19 -Wl,-install_name,$(slibdir)/$(SHLIB_INSTALL_NAME) \ 20 -single_module -o $(SHLIB_DIR)/$(SHLIB_SONAME).tmp \ 21 -Wl,-exported_symbols_list,$(SHLIB_MAP) \ 22 $(SHLIB_VERSTRING) \ 23 @multilib_flags@ $(SHLIB_OBJS) $(SHLIB_LC) 24 25# $(slibdir) double quoted to protect it from expansion while building 26# libgcc.mk. We want this delayed until actual install time. 27SHLIB_INSTALL = \ 28 $$(mkinstalldirs) $$(DESTDIR)$$(slibdir); \ 29 $(INSTALL_DATA) $(SHLIB_SONAME) \ 30 $$(DESTDIR)$$(slibdir)/$(SHLIB_SONAME) 31 32SHLIB_MKMAP = $(srcdir)/mkmap-flat.awk 33SHLIB_MKMAP_OPTS = -v leading_underscore=1 34SHLIB_MAPFILES += $(srcdir)/libgcc-std.ver 35 36# Must use a different directive for hidden visibility in assembly sources. 37ASM_HIDDEN_OP = .private_extern 38 39# In order to support -mmacosx-version-min, you need to have multiple 40# different libgcc_s libraries that actually get linked against, one for 41# each system version supported. They are 'stub' libraries that 42# contain no code, just a list of exported symbols. 43# The actual use of the libraries is controlled by REAL_LIBGCC_SPEC. 44# 45# This assumes each multilib corresponds to a different architecture. 46libgcc_s.%.dylib : $(SHLIB_VERPFX).%.ver stmp-multilib 47 # When building multilibbed target libraries, all the required 48 # libraries are expected to exist in the multilib directory. 49 MLIBS=`$(GCC_FOR_TARGET) --print-multi-lib \ 50 | sed -e 's/;.*$$//' -e '/^\.$$/d'` ; \ 51 for mlib in $$MLIBS ; do \ 52 rm -f $${mlib}/$@ || exit 1 ; \ 53 $(LN_S) ../$@ $${mlib}/$@ || exit 1 ; \ 54 done 55 MLIBS=`$(GCC_FOR_TARGET) --print-multi-lib \ 56 | sed -e 's/;.*$$//' -e '/^\.$$/d'` ; \ 57 for mlib in '' $$MLIBS ; do \ 58 $(STRIP_FOR_TARGET) -o $(@)_T$${mlib} \ 59 -s $(SHLIB_VERPFX).$(*).ver -c -u \ 60 ./$${mlib}/libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT).tmp || exit 1 ; \ 61 done 62 $(LIPO_FOR_TARGET) -output $@ -create $(@)_T* 63 rm $(@)_T* 64 65libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT): stmp-multilib libgcc_s.10.4.dylib \ 66 libgcc_s.10.5.dylib 67 # When building multilibbed target libraries, all the required 68 # libraries are expected to exist in the multilib directory. 69 MLIBS=`$(GCC_FOR_TARGET) --print-multi-lib \ 70 | sed -e 's/;.*$$//' -e '/^\.$$/d'` ; \ 71 for mlib in '' $$MLIBS ; do \ 72 cp ./$${mlib}/libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT).tmp \ 73 ./libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \ 74 done 75 $(LIPO_FOR_TARGET) -output libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT) \ 76 -create libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T* 77 rm libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T* 78 79# From the point-of-view of the Makefiles, libgcc is built by the 'strip' 80# and 'lipo' commands above. 81LIBGCC=libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT) libgcc_s.10.4.dylib \ 82 libgcc_s.10.5.dylib stmp-multilib 83 84INSTALL_FILES=libgcc_s.10.4.dylib libgcc_s.10.5.dylib libgcc_s.1.dylib 85 86install-darwin-libgcc-stubs : $(INSTALL_FILES) installdirs 87 for d in $(INSTALL_FILES) ; do \ 88 $(INSTALL_DATA) $$d $(DESTDIR)$(slibdir)/$$d || exit 1 ; \ 89 done 90 if [ -f $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib ]; then \ 91 rm -f $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib; \ 92 else true; fi 93 $(LN_S) libgcc_s.1.dylib \ 94 $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib 95 if [ -f $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib ]; then \ 96 rm -f $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib; \ 97 else true; fi 98 $(LN_S) libgcc_s.1.dylib \ 99 $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib 100 101INSTALL_LIBGCC = install-darwin-libgcc-stubs install-multilib 102