--- a/hotspot/make/solaris/makefiles/gcc.make	Mon Jun 11 10:28:02 2012 +0200
+++ b/hotspot/make/solaris/makefiles/gcc.make	Mon Jun 11 13:10:14 2012 -0400
@@ -141,7 +141,7 @@
 
 # Flags for generating make dependency flags.
 ifneq ("${CC_VER_MAJOR}", "2")
-DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
+DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
 endif
 
 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.