make/bsd/makefiles/top.make

rev 2852 : 7116081: USE_PRECOMPILED_HEADER=0 triggers a single threaded build of the JVM
Summary: Changed the conditional to see if the precompiled header has been specified. Also, removed the unused PrecompiledOption.
Reviewed-by: TBD1, TBD2

@@ -45,16 +45,14 @@
 GENERATED   = $(TOPDIR)/../generated
 VM          = $(GAMMADIR)/src/share/vm
 Plat_File   = $(Platform_file)
 CDG         = cd $(GENERATED); 
 
-ifdef USE_PRECOMPILED_HEADER
-PrecompiledOption = -DUSE_PRECOMPILED_HEADER
+ifneq ($(USE_PRECOMPILED_HEADER),0)
 UpdatePCH         = $(MAKE) -f vm.make $(PRECOMPILED_HEADER) $(MFLAGS) 
 else
 UpdatePCH         = \# precompiled header is not used
-PrecompiledOption = 
 endif
 
 Cached_plat = $(GENERATED)/platform.current
 
 AD_Dir   = $(GENERATED)/adfiles