default the build machine triplet, if it is not provided

From-SVN: r37979

gcc/ChangeLog

@@ -1,3 +1,8 @@
+2000-12-03  Bruce Korb  <bkorb@gcc.org>
+
+	* fixinc/mkfixinc.sh(build machine): Sometimes, there is no canonical
+	build machine name.  Default to the target.
+
 2000-12-03  Laurynas Biveinis  <lauras@softhome.net>
 
 	* Makefile.in: use $(build_canonical), not $(canonical_build).

gcc/fixinc/mkfixinc.sh

@@ -5,14 +5,16 @@ machine=$2
 
 if [ -z "$build" ]
 then
-       echo No build system name given
-       exit 1
+	echo No target system name given
+	exit 1
 fi
 
+#  If we don't get two arguments, then assume both arguments
+#  are the same
+#
 if [ -z "$machine" ]
 then
-	echo No machine name given
-	exit 1
+	machine="$build"
 fi
 
 target=../fixinc.sh