Use CROSS_LIBGCC1 for a cross-compiler

From-SVN: r5294

gcc/Makefile.in

@@ -188,6 +188,10 @@ INSTALL_LIBGCC = install-libgcc
 # with or for libgcc1.a.
 LIBGCC1 = libgcc1.a
 
+# Specify the rule for making libgcc1.a for a cross-compiler.
+# The default rule assumes that libgcc1.a is supplied by the user.
+CROSS_LIBGCC1 = libgcc1.cross
+
 # Specify the rule for actually making libgcc2.a.
 LIBGCC2 = libgcc2.a
 

gcc/cross-make

-# Expect user to provide libgcc1.a,
-# and give up immediately if the user has not done so.
-LIBGCC1 = libgcc1.cross
+# Build libgcc1.a for a cross-compiler.
+# By default this expects the user to provide libgcc1.a,
+# and gives up immediately if the user has not done so.
+LIBGCC1 = $(CROSS_LIBGCC1)
 
 # Specify tools and options for manipulating libraries for the target machine.
 AR = $(AR_FOR_TARGET)