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- # Build a shared libgcc library with the darwin linker.
- SHLIB_SOVERSION = 1.1
- SHLIB_SO_MINVERSION = 1
- SHLIB_VERSTRING = -compatibility_version $(SHLIB_SO_MINVERSION) \
- -current_version $(SHLIB_SOVERSION)
- SHLIB_EXT = .dylib
- SHLIB_LC = -lSystem
- SHLIB_INSTALL_DIR = $(slibdir)
- SHLIB_MKMAP = $(srcdir)/mkmap-flat.awk
- SHLIB_MKMAP_OPTS = -v leading_underscore=1
- # Shorthand expressions for the LINK below, these are substituted in the
- # link expression.
- SHLIB_INSTALL_NAME = @shlib_base_name@.$(SHLIB_SOVERSION)$(SHLIB_EXT)
- SHLIB_MAP = @shlib_map_file@
- SHLIB_DIR = @multilib_dir@
- SHLIB_SONAME = @shlib_base_name@$(SHLIB_EXT)
- # Darwin only searches in shlib_slibdir for shared libraries, not in
- # subdirectories. The link builds one architecture slice in its designated
- # subdir. The code under MULTIBUILDTOP combines these into a single FAT
- # library, that is what we eventually install.
- SHLIB_LINK = $(CC) $(LIBGCC2_CFLAGS) $(LDFLAGS) -dynamiclib -nodefaultlibs \
- -install_name $(SHLIB_INSTALL_DIR)/$(SHLIB_INSTALL_NAME) \
- -single_module -o $(SHLIB_DIR)/$(SHLIB_SONAME) \
- -Wl,-exported_symbols_list,$(SHLIB_MAP) \
- $(SHLIB_VERSTRING) \
- @multilib_flags@ @shlib_objs@ $(SHLIB_LC)
- # we do our own thing
- SHLIB_INSTALL =
- LGCC_FILES = libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)
- ifeq ($(BUILD_LIBGCCS1),YES)
- # We are going to build a libgcc_s.1.dylib so that distributions can
- # install it for compatibility with binaries linked against the old
- # libgcc_ext.10.x.dylib stubs.
- # For systems after macOS 10.7 we can forward the correct unwinder symbols
- # from libSystem.
- # For older systems we have to forward an entire library (since they cannot
- # selectively forward symbols, which means that we cannot forward the unwinder
- # in /usr/lib/libgcc_s.1.dylib). We also cannot forward the entire library
- # since that creates a self-referencing loop when DYLD_LIBRARY_PATH is used.
- # To provide the unwinder symbols in this case, we build the unwinder into a
- # separate shared lib (libgcc_ehs) and forward that.
- # These targets are local to this make fragment, which means that they do not
- # get the substitutions seen in SHLIB_LINK.
- ifneq ($(LIBEHSOBJS),)
- EHS_INSTNAME = libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT)
- # multilib build for a shared EH lib.
- libgcc_ehs$(SHLIB_EXT): $(LIBEHSOBJS) $(extra-parts)
- mkdir -p $(MULTIDIR)
- $(CC) $(LIBGCC2_CFLAGS) $(LDFLAGS) -dynamiclib -nodefaultlibs \
- -install_name $(SHLIB_INSTALL_DIR)/$(EHS_INSTNAME) \
- -o $(MULTIDIR)/libgcc_ehs$(SHLIB_EXT) $(SHLIB_VERSTRING) \
- $(LIBEHSOBJS) $(SHLIB_LC)
- all: libgcc_ehs$(SHLIB_EXT)
- LGCC_FILES += libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT)
- endif
- # Provide libgcc_s.1 for backwards compatibility.
- LGCC_FILES += libgcc_s.1.dylib
- endif
- INSTALL_FILES=$(LGCC_FILES)
- # For the toplevel multilib, build FAT dylibs including all the multilibs.
- ifeq ($(MULTIBUILDTOP),)
- ifeq ($(enable_shared),yes)
- all: $(INSTALL_FILES)
- install-leaf: install-darwin-libgcc-stubs
- endif
- libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT): all-multi libgcc_s$(SHLIB_EXT)
- MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
- for mlib in $$MLIBS ; do \
- cp ../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT) \
- ./libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \
- done
- $(LIPO) -output libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT) \
- -create libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
- rm libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
- ifeq ($(BUILD_LIBGCCS1),YES)
- ifneq ($(LIBEHSOBJS),)
- libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT): all-multi libgcc_ehs$(SHLIB_EXT)
- MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
- for mlib in $$MLIBS ; do \
- cp ../$${mlib}/libgcc/$${mlib}/libgcc_ehs$(SHLIB_EXT) \
- ./libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \
- done
- $(LIPO) -output libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT) \
- -create libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
- rm libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
- libgcc_s.1.dylib: all-multi libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT) \
- libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT)
- MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
- for mlib in $$MLIBS ; do \
- cp ../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT) \
- ./libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \
- cp ../$${mlib}/libgcc/$${mlib}/libgcc_ehs$(SHLIB_EXT) \
- ./libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \
- arch=`$(LIPO) -info libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} | sed -e 's/.*:\ //'` ; \
- $(CC) -arch $${arch} -nodefaultlibs -dynamiclib \
- -o libgcc_s.1$(SHLIB_EXT)_T_$${mlib} \
- -Wl,-reexport_library,libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} \
- -Wl,-reexport_library,libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} \
- -install_name $(SHLIB_INSTALL_DIR)/libgcc_s.1.dylib \
- -compatibility_version 1 -current_version 1 ; \
- done
- $(LIPO) -output libgcc_s.1$(SHLIB_EXT) -create libgcc_s.1$(SHLIB_EXT)_T*
- rm libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
- rm libgcc_ehs.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
- else
- libgcc_s.1.dylib: all-multi libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)
- MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
- for mlib in $$MLIBS ; do \
- cp ../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT) \
- ./libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \
- arch=`$(LIPO) -info libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} | sed -e 's/.*:\ //'` ; \
- $(CC) -arch $${arch} -nodefaultlibs -dynamiclib \
- -o libgcc_s.1$(SHLIB_EXT)_T_$${mlib} \
- -Wl,-reexport_library,libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} \
- -lSystem \
- -Wl,-reexported_symbols_list,$(srcdir)/config/darwin-unwind.ver \
- -install_name $(SHLIB_INSTALL_DIR)/libgcc_s.1.dylib \
- -compatibility_version 1 -current_version 1 ; \
- done
- $(LIPO) -output libgcc_s.1$(SHLIB_EXT) -create libgcc_s.1$(SHLIB_EXT)_T*
- rm libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
- endif
- endif
- # Install the shared libraries.
- install-darwin-libgcc-stubs :
- $(mkinstalldirs) $(DESTDIR)$(slibdir)
- for d in $(INSTALL_FILES) ; do \
- $(INSTALL_DATA) $$d $(DESTDIR)$(slibdir)/$$d || exit 1 ; \
- done
- else
- # Do not install shared libraries for multilibs. Unless we are putting them
- # in the gcc directory during a build, for compatibility with the pre-top-
- # level layout. In that case we provide symlinks to the FAT lib from the
- # multilib sub-directories.
- ifeq ($(enable_shared),yes)
- all: install-darwin-libgcc-links
- endif
- install-darwin-libgcc-links:
- $(mkinstalldirs) $(gcc_objdir)$(MULTISUBDIR)
- for file in $(INSTALL_FILES); do \
- rm -f $(gcc_objdir)$(MULTISUBDIR)/$$file; \
- $(LN_S) ../$$file $(gcc_objdir)$(MULTISUBDIR)/; \
- done
- endif
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