1 # Build a shared libgcc library with the darwin linker.
3 SHLIB_VERSTRING = -compatibility_version $(SHLIB_SOVERSION) -current_version $(SHLIB_SOVERSION).0
5 SHLIB_INSTALL_NAME = @shlib_base_name@.$(SHLIB_SOVERSION)$(SHLIB_EXT)
6 SHLIB_SONAME = @shlib_base_name@$(SHLIB_EXT)
7 SHLIB_SOLINK = @shlib_base_name@.so
8 SHLIB_MAP = @shlib_map_file@
9 SHLIB_OBJS = @shlib_objs@
10 SHLIB_DIR = @multilib_dir@
13 # Darwin only searches in /usr/lib for shared libraries, not in subdirectories,
14 # so the libgcc variants have different names not different locations.
15 # Note that this version is used for the loader, not the linker; the linker
16 # uses the stub versions named by the versioned members of $(INSTALL_FILES).
18 SHLIB_LINK = $(CC) $(LIBGCC2_CFLAGS) -dynamiclib -nodefaultlibs \
19 -install_name @shlib_slibdir@/$(SHLIB_INSTALL_NAME) \
20 -single_module -o $(SHLIB_DIR)/$(SHLIB_SONAME) \
21 -Wl,-exported_symbols_list,$(SHLIB_MAP) \
23 @multilib_flags@ $(SHLIB_OBJS) $(SHLIB_LC)
25 SHLIB_MKMAP = $(srcdir)/mkmap-flat.awk
26 SHLIB_MKMAP_OPTS = -v leading_underscore=1
27 SHLIB_MAPFILES = libgcc-std.ver $(srcdir)/config/libgcc-libsystem.ver
28 SHLIB_VERPFX = $(srcdir)/config/$(cpu_type)/libgcc-darwin
30 # we're only going to build the stubs if the target slib is /usr/lib
31 # there is no other case in which they're useful in a live system.
32 ifeq (/usr/lib,$(shlib_slibdir))
33 LGCC_STUBS = libgcc_s.10.4.dylib libgcc_s.10.5.dylib
38 LGCC_FILES = libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)
39 LGCC_FILES += $(LGCC_STUBS)
40 LEXT_STUBS = libgcc_ext.10.4$(SHLIB_EXT) libgcc_ext.10.5$(SHLIB_EXT)
41 LGCC_FILES += $(LEXT_STUBS)
42 INSTALL_FILES=$(LGCC_FILES)
47 # For the toplevel multilib, build a fat archive including all the multilibs.
48 ifeq ($(MULTIBUILDTOP),)
50 ifeq ($(enable_shared),yes)
52 install-leaf: install-darwin-libgcc-stubs
55 # In order to support -mmacosx-version-min, you need to have multiple
56 # different libgcc_s libraries that actually get linked against, one for
57 # each system version supported. They are 'stub' libraries that
58 # contain no code, just a list of exported symbols.
59 # The actual use of the libraries is controlled by REAL_LIBGCC_SPEC.
61 # This assumes each multilib corresponds to a different architecture.
62 libgcc_s.%.dylib : all-multi $(SHLIB_VERPFX).%.ver libgcc_s$(SHLIB_EXT)
63 MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
64 for mlib in $$MLIBS ; do \
65 $(STRIP) -o $(@)_T$${mlib} \
66 -s $(SHLIB_VERPFX).$(*).ver -c -u \
67 ../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT) || exit 1 ; \
69 $(LIPO) -output $@ -create $(@)_T*
72 libgcc_ext.%.dylib : all-multi $(SHLIB_VERPFX).%.ver libgcc_s$(SHLIB_EXT)
73 MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
74 for mlib in $$MLIBS ; do \
75 $(STRIP) -o $(@)_T$${mlib} \
76 -R $(SHLIB_VERPFX).$(*).ver -c -urx \
77 ../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT) || exit 1 ; \
79 $(LIPO) -output $@ -create $(@)_T*
82 libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT): all-multi libgcc_s$(SHLIB_EXT)
83 MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
84 for mlib in $$MLIBS ; do \
85 cp ../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT) \
86 ./libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \
88 $(LIPO) -output libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT) \
89 -create libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
90 rm libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
92 install-darwin-libgcc-stubs :
93 $(mkinstalldirs) $(DESTDIR)$(slibdir)
94 for d in $(INSTALL_FILES) ; do \
95 $(INSTALL_DATA) $$d $(DESTDIR)$(slibdir)/$$d || exit 1 ; \
97 if [ -f $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib ]; then \
98 rm -f $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib; \
100 $(LN_S) libgcc_s.1.dylib \
101 $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib
102 if [ -f $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib ]; then \
103 rm -f $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib; \
105 $(LN_S) libgcc_s.1.dylib \
106 $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib
110 # Do not install shared libraries for any other multilibs. Unless
111 # we're putting them in the gcc directory during a build, for
112 # compatibility with the pre-top-level layout. In that case we
115 ifeq ($(enable_shared),yes)
116 all: install-darwin-libgcc-links
119 install-darwin-libgcc-links:
120 $(mkinstalldirs) $(gcc_objdir)$(MULTISUBDIR)
121 for file in $(INSTALL_FILES); do \
122 rm -f $(gcc_objdir)$(MULTISUBDIR)/$$file; \
123 $(LN_S) ../$$file $(gcc_objdir)$(MULTISUBDIR)/; \
126 rm -f $(gcc_objdir)$(MULTISUBDIR)/libgcc_s_x86_64.1.dylib
127 $(LN_S) libgcc_s.1.dylib \
128 $(gcc_objdir)$(MULTISUBDIR)/libgcc_s_x86_64.1.dylib
130 rm -f $(gcc_objdir)$(MULTISUBDIR)/libgcc_s_ppc64.1.dylib
131 $(LN_S) libgcc_s.1.dylib \
132 $(gcc_objdir)$(MULTISUBDIR)/libgcc_s_ppc64.1.dylib