gcc/config/t-slibgcc-darwin

   1 # Build a shared libgcc library with the darwin linker.
   2 SHLIB_SOVERSION = 1
   3 SHLIB_VERSTRING = -compatibility_version $(SHLIB_SOVERSION) -current_version $(SHLIB_SOVERSION).0
   4 SHLIB_EXT = .dylib
   5 SHLIB_SUFFIX = `if test @multilib_dir@ = ppc64 ; then echo _@multilib_dir@ ; fi`
   6 SHLIB_INSTALL_NAME = @shlib_base_name@$(SHLIB_SUFFIX).$(SHLIB_SOVERSION)$(SHLIB_EXT)
   7 SHLIB_SONAME = @shlib_base_name@.$(SHLIB_SOVERSION)$(SHLIB_EXT)
   8 SHLIB_SOLINK = @shlib_base_name@.so
   9 SHLIB_MAP = @shlib_map_file@
  10 SHLIB_OBJS = @shlib_objs@
  11 SHLIB_DIR = @multilib_dir@
  12 SHLIB_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).
  18 SHLIB_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.
  27 SHLIB_INSTALL = \
  28         $$(mkinstalldirs) $$(DESTDIR)$$(slibdir); \
  29         $(INSTALL_DATA) $(SHLIB_SONAME) \
  30           $$(DESTDIR)$$(slibdir)/$(SHLIB_SONAME)
  31
  32 SHLIB_MKMAP = $(srcdir)/mkmap-flat.awk
  33 SHLIB_MKMAP_OPTS = -v leading_underscore=1
  34 SHLIB_MAPFILES += $(srcdir)/libgcc-std.ver
  35
  36 # Must use a different directive for hidden visibility in assembly sources.
  37 ASM_HIDDEN_OP = .private_extern
  38
  39 # In order to support -mmacosx-version-min, you need to have multiple
  40 # different libgcc_s libraries that actually get linked against, one for
  41 # each system version supported.  They are 'stub' libraries that
  42 # contain no code, just a list of exported symbols.
  43 # The actual use of the libraries is controlled by REAL_LIBGCC_SPEC.
  44 #
  45 # This assumes each multilib corresponds to a different architecture.
  46 libgcc_s.%.dylib : $(SHLIB_VERPFX).%.ver libgcc.a
  47         # When building multilibbed target libraries, all the required
  48         # libraries are expected to exist in the multilib directory.
  49         MLIBS=`$(GCC_FOR_TARGET) --print-multi-lib \
  50                 | sed -e 's/;.*$$//' -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             ./$${mlib}/libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT).tmp || exit 1 ; \
  61         done
  62         $(LIPO_FOR_TARGET) -output $@ -create $(@)_T*
  63         rm $(@)_T*
  64
  65 stmp-lipo: libgcc.a libgcc_s.10.4.dylib libgcc_s.10.5.dylib
  66         # When building multilibbed target libraries, all the required
  67         # libraries are expected to exist in the multilib directory.
  68         MLIBS=`$(GCC_FOR_TARGET) --print-multi-lib \
  69                 | sed -e 's/;.*$$//' -e '/^\.$$/d'` ; \
  70         for mlib in '' $$MLIBS ; do \
  71           cp ./$${mlib}/libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT).tmp \
  72             ./libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \
  73         done
  74         $(LIPO_FOR_TARGET) -output libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT) \
  75           -create libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
  76         rm libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
  77         $(STAMP) stmp-lipo
  78
  79 # From the point-of-view of the Makefiles, libgcc is built by the 'strip'
  80 # and 'lipo' commands above.
  81 LIBGCC=stmp-lipo
  82
  83 INSTALL_FILES=libgcc_s.10.4.dylib libgcc_s.10.5.dylib libgcc_s.1.dylib
  84
  85 install-darwin-libgcc-stubs : $(INSTALL_FILES) installdirs install-multilib \
  86                                 stmp-lipo
  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
  96 INSTALL_LIBGCC += install-darwin-libgcc-stubs