(multilib.h, stmp-multilib, install-multilib): New targets.

(gcc.o): Depend on multilib.h.
(clean): Remove multilib.h and tmpmultilib*.

From-SVN: r7490

gcc/Makefile.in

@@ -819,6 +819,50 @@ libgcc.a: $(LIBGCC1) $(LIBGCC2)
 # so that libgcc.a itself remains nonexistent if compilation is aborted.
 	mv tmplibgcc.a libgcc.a
 
+# Use the genmultilib shell script to generate the information the gcc
+# driver program needs to select the library directory based on the
+# switches.
+multilib.h: $(srcdir)/genmultilib config.status
+	$(SHELL) $(srcdir)/genmultilib "$(MULTILIB_OPTIONS)" \
+	  "$(MULTILIB_DIRNAMES)" "$(MULTILIB_MATCHES)" > multilib.h
+
+# Build multiple copies of libgcc.a, one for each target switch.
+stmp-multilib: $(LIBGCC1) libgcc2.c libgcc2.ready $(CONFIG_H) \
+   $(LIB2FUNCS_EXTRA) machmode.h longlong.h gbl-ctors.h config.status
+	for i in `$(GCC_FOR_TARGET) --print-multi-lib`; do \
+	  dir=`echo $$i | sed -e 's/;.*$$//'`; \
+	  flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
+	  rm -f $${dir}/libgcc.a $(LIBGCC2); \
+	  $(MAKE) GCC_FOR_TARGET="$(GCC_FOR_TARGET)" \
+	    AR="$(AR)" AR_FLAGS="$(AR_FLAGS)" \
+	    HOST_PREFIX="$(HOST_PREFIX)" HOST_PREFIX_1="$(HOST_PREFIX_1)" \
+	    LIBGCC2_CFLAGS="$(LIBGCC2_CFLAGS) $${flags}" $(LIBGCC2); \
+	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
+	  if [ x$(LIBGCC1) != xlibgcc1-asm.a ]; \
+	  then true; \
+	  else (rm -f $(LIBGCC1); \
+		$(MAKE) GCC_FOR_TARGET="$(GCC_FOR_TARGET)" \
+	    	  AR="$(AR)" AR_FLAGS="$(AR_FLAGS)" \
+		  HOST_PREFIX="$(HOST_PREFIX)" \
+		  HOST_PREFIX_1="$(HOST_PREFIX_1)" \
+	    	  LIBGCC2_CFLAGS="$(LIBGCC2_CFLAGS) $${flags}" $(LIBGCC1) ) \
+	  fi; \
+	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
+	  rm -rf tmpcopy; \
+	  mkdir tmpcopy; \
+	  if [ x$(LIBGCC1) != x ]; \
+	  then (cd tmpcopy; $(AR) x ../$(LIBGCC1)); \
+	  else true; \
+	  fi; \
+	  (cd tmpcopy; $(AR) x ../$(LIBGCC2)); \
+	  (cd tmpcopy; $(AR) $(AR_FLAGS) ../tmplibgcc.a *.o); \
+	  rm -rf libgcc2.a tmpcopy; \
+	  if $(RANLIB_TEST) ; then $(RANLIB) tmplibgcc.a; else true; fi; \
+	  if [ -d $${dir} ]; then true; else mkdir $${dir}; fi; \
+	  mv tmplibgcc.a $${dir}/libgcc.a; \
+	done
+	touch stmp-multilib
+
 objc-runtime: libobjc.a
 
 # Build the Objective C runtime library.
@@ -924,7 +968,7 @@ c-common.o : c-common.c $(CONFIG_H) $(TREE_H) c-tree.h c-lex.h flags.h
 
 # Language-independent files.
 
-gcc.o: gcc.c $(CONFIG_H) config.status
+gcc.o: gcc.c $(CONFIG_H) multilib.h config.status
 	$(CC) $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
   -DSTANDARD_STARTFILE_PREFIX=\"$(libdir)/\" \
   -DSTANDARD_EXEC_PREFIX=\"$(libdir)/gcc-lib/\" \
@@ -1726,6 +1770,7 @@ clean: mostlyclean bytecode.clean lang.clean
 # Delete the include directory.
 	-rm -rf stmp-* include objc-headers
 	-rm -f */stmp-*
+	-rm -f multilib.h tmpmultilib*
 
 # Delete all files that users would normally create
 # while building and installing GCC.
@@ -1901,6 +1946,18 @@ install-libgcc: libgcc.a install-dir
 	  chmod a-x $(libsubdir)/libgcc.a; \
 	else true; fi
 
+# Install multiple versions of libgcc.a.
+install-multilib: stmp-multilib install-dir
+	for i in `$(GCC_FOR_TARGET) --print-multi-lib`; do \
+	  dir=`echo $$i | sed -e 's/;.*$$//'`; \
+	  if [ -d $(libsubdir)/$${dir} ]; then true; else mkdir $(libsubdir)/$${dir}; fi; \
+	  rm -f $(libsubdir)/$${dir}/libgcc.a; \
+	  $(INSTALL_DATA) $${dir}/libgcc.a $(libsubdir)/$${dir}/libgcc.a; \
+	  if $(RANLIB_TEST); then \
+	    (cd $(libsubdir)/$${dir}; $(RANLIB) libgcc.a); else true; fi; \
+	  chmod a-x $(libsubdir)/$${dir}/libgcc.a; \
+	done
+
 # Install the objc run time library.
 install-libobjc: libobjc.a install-dir
 	-if [ -f libobjc.a ] ; then \