Make Linux build happy.

tools/Makefile

 # Copyright 2008, 2009, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 922 matching lines @@
         $(MAKE) -f $(THISMAKEFILE) sdkdirs
         cp -f ../../third_party/gcc/COPYING* $(DESTDIR)$(SDKROOT)
         $(MAKE) -f $(THISMAKEFILE) BUILD/stamp-$(CROSSARCH)-binutils
         $(MAKE) -f $(THISMAKEFILE) BUILD/stamp-$(CROSSARCH)-pregcc
         $(MAKE) -f $(THISMAKEFILE) BUILD/stamp-$(CROSSARCH)-newlib
         $(MAKE) -f $(THISMAKEFILE) nc_threads
         # We need libnacl.a for gfortran, but we don't have a c++ yet
         $(MAKE) -f $(THISMAKEFILE) nacl_libraries_nocpp
         $(MAKE) -f $(THISMAKEFILE) BUILD/stamp-$(CROSSARCH)-gcc
         case $$(SRC/binutils/config.guess) in \
-        *-linux*) $(MAKE) -f $(THISMAKEFILE) BUILD/stamp-gdb ;; \
+        *-linux*) $(MAKE) -f $(THISMAKEFILE) BUILD/stamp-$(CROSSARCH)-gdb ;; \
         esac
         $(MAKE) -f $(THISMAKEFILE) nacl_libraries
         $(MAKE) -f $(THISMAKEFILE) sdk_minimal_test
         $(MAKE) -f $(THISMAKEFILE) redirector
         # We delete posix_over_srpc library until it is good enough for binary
         # distribution.
         rm -f "$(DESTDIR)$(SDKROOT)/$(CROSSARCH)"/lib{,/32}/libposix_over_srpc.a
 
 ##################################################################
 # Run DejaGnu tests.
@@ skipping 31 matching lines @@
 
 
 ##################################################################
 # Remove the BUILD directory.
 # Library builds are maintained by scons.
 ##################################################################
 clean:
         -rm -rf BUILD
 
 .PHONY: ALWAYS