libgcc/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 $(SHLIB_SOVERSION).0
   4 SHLIB_EXT = .dylib
   5 SHLIB_INSTALL_NAME = @shlib_base_name@.$(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@
  11 SHLIB_LC = -lc
  12
  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).
  17
  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) \
  22         $(SHLIB_VERSTRING) \
  23         @multilib_flags@ $(SHLIB_OBJS) $(SHLIB_LC)
  24
  25 SHLIB_MKMAP = $(gcc_srcdir)/mkmap-flat.awk
  26 SHLIB_MKMAP_OPTS = -v leading_underscore=1
  27 SHLIB_MAPFILES += $(gcc_srcdir)/libgcc-std.ver
  28
  29 # we're only going to build the stubs if the target slib is /usr/lib
  30 # there is no other case in which they're useful in a live system.
  31 ifeq (/usr/lib,$(shlib_slibdir))
  32 LGCC_STUBS = libgcc_s.10.4.dylib libgcc_s.10.5.dylib
  33 else
  34 LGCC_STUBS =
  35 endif
  36
  37 LGCC_FILES = libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)
  38 LGCC_FILES += $(LGCC_STUBS)
  39 LEXT_STUBS = libgcc_ext.10.4$(SHLIB_EXT) libgcc_ext.10.5$(SHLIB_EXT)
  40 LGCC_FILES += $(LEXT_STUBS)
  41 INSTALL_FILES=$(LGCC_FILES)
  42
  43 # we do our own thing
  44 SHLIB_INSTALL =
  45
  46 # For the toplevel multilib, build a fat archive including all the multilibs.
  47 ifeq ($(MULTIBUILDTOP),)
  48
  49 ifeq ($(enable_shared),yes)
  50 all: $(INSTALL_FILES)
  51 install-leaf: install-darwin-libgcc-stubs
  52 endif
  53
  54 # In order to support -mmacosx-version-min, you need to have multiple
  55 # different libgcc_s libraries that actually get linked against, one for
  56 # each system version supported.  They are 'stub' libraries that
  57 # contain no code, just a list of exported symbols.
  58 # The actual use of the libraries is controlled by REAL_LIBGCC_SPEC.
  59 #
  60 # This assumes each multilib corresponds to a different architecture.
  61 libgcc_s.%.dylib : all-multi $(SHLIB_VERPFX).%.ver libgcc_s$(SHLIB_EXT)
  62         MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
  63         for mlib in $$MLIBS ; do \
  64           $(STRIP) -o $(@)_T$${mlib} \
  65             -s $(SHLIB_VERPFX).$(*).ver -c -u \
  66             ../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT)  || exit 1 ; \
  67         done
  68         $(LIPO) -output $@ -create $(@)_T*
  69         rm $(@)_T*
  70
  71 libgcc_ext.%.dylib : all-multi $(SHLIB_VERPFX).%.ver libgcc_s$(SHLIB_EXT)
  72         MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
  73         for mlib in $$MLIBS ; do \
  74           $(STRIP) -o $(@)_T$${mlib} \
  75             -R $(SHLIB_VERPFX).$(*).ver -c -urx \
  76             ../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT) || exit 1 ; \
  77         done
  78         $(LIPO) -output $@ -create $(@)_T*
  79         rm $(@)_T*
  80
  81 libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT): all-multi libgcc_s$(SHLIB_EXT)
  82         MLIBS=`$(CC) --print-multi-lib | sed -e 's/;.*$$//'` ; \
  83         for mlib in $$MLIBS ; do \
  84           cp ../$${mlib}/libgcc/$${mlib}/libgcc_s$(SHLIB_EXT)  \
  85             ./libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T_$${mlib} || exit 1 ; \
  86         done
  87         $(LIPO) -output libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT) \
  88           -create libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
  89         rm libgcc_s.$(SHLIB_SOVERSION)$(SHLIB_EXT)_T*
  90
  91 install-darwin-libgcc-stubs :
  92         $(mkinstalldirs) $(DESTDIR)$(slibdir)
  93         for d in $(INSTALL_FILES) ; do \
  94           $(INSTALL_DATA) $$d $(DESTDIR)$(slibdir)/$$d || exit 1 ; \
  95         done
  96         if [ -f $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib ]; then \
  97           rm -f $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib; \
  98         else true; fi
  99         $(LN_S) libgcc_s.1.dylib \
 100                 $(DESTDIR)$(slibdir)/libgcc_s_ppc64.1.dylib
 101         if [ -f $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib ]; then \
 102           rm -f $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib; \
 103         else true; fi
 104         $(LN_S) libgcc_s.1.dylib \
 105                 $(DESTDIR)$(slibdir)/libgcc_s_x86_64.1.dylib
 106
 107 else
 108
 109 # Do not install shared libraries for any other multilibs.  Unless
 110 # we're putting them in the gcc directory during a build, for
 111 # compatibility with the pre-top-level layout.  In that case we
 112 # need symlinks.
 113
 114 ifeq ($(enable_shared),yes)
 115 all: install-darwin-libgcc-links
 116 endif
 117
 118 install-darwin-libgcc-links:
 119         $(mkinstalldirs) $(gcc_objdir)$(MULTISUBDIR)
 120         for file in $(INSTALL_FILES); do                        \
 121           rm -f $(gcc_objdir)$(MULTISUBDIR)/$$file;             \
 122           $(LN_S) ../$$file $(gcc_objdir)$(MULTISUBDIR)/;       \
 123         done
 124
 125         rm -f $(gcc_objdir)$(MULTISUBDIR)/libgcc_s_x86_64.1.dylib
 126         $(LN_S) libgcc_s.1.dylib \
 127                 $(gcc_objdir)$(MULTISUBDIR)/libgcc_s_x86_64.1.dylib
 128
 129         rm -f $(gcc_objdir)$(MULTISUBDIR)/libgcc_s_ppc64.1.dylib
 130         $(LN_S) libgcc_s.1.dylib \
 131                 $(gcc_objdir)$(MULTISUBDIR)/libgcc_s_ppc64.1.dylib
 132
 133 endif