For directories that use additional VPATHs, change OBJ_SUFFIX instead of duplicating build rules. Turn off compiler dependencies when changing OBJ_SUFFIX because at least gcc < 3.0 has problems generating the correct dependencies when the basename of the srcfile does not match the basename of the object file.

Bug #105005

gfx/src/xprint/Makefile.in

@@ -78,15 +78,14 @@ EXTRA_DSO_LDOPTS += $(MOZ_COMPONENT_LIBS) \
 
 # use different MDDEPDIR & OBJ_SUFFIX to work around objs in srcdir/VPATH 
 # issue (bug 87422 & 100851)
+# Turn off compiler dependencies as 'gcc -MD' 
+# cannot handle our obj_suffix renaming. (bug 105005)
 MDDEPDIR       := $(MDDEPDIR)_vpath
-ORIG_OBJ_SUFFIX := $(OBJ_SUFFIX)
 OBJ_SUFFIX	:= xp.$(OBJ_SUFFIX)
+COMPILER_DEPEND :=
 
 include $(topsrcdir)/config/rules.mk
 
-clean clobber clobber_all realclean distclean::
-	-$(RM) -f $(wildcard *.$(ORIG_OBJ_SUFFIX))
-
 DEFINES         += -D_IMPL_NS_GFXONXP -DUSE_MOZILLA_TYPES -DUSE_XPRINT
 ifeq ($(OS_ARCH), Linux)
 DEFINES         += -D_BSD_SOURCE

modules/libjar/standalone/Makefile.in

@@ -41,17 +41,15 @@ REQUIRES	= xpcom \
 
 CPPSRCS		= $(MODULES_LIBJAR_LCPPSRCS)
 
-OBJS		= $(addprefix S_,$(CPPSRCS:.cpp=.$(OBJ_SUFFIX)))
-
 FORCE_STATIC_LIB = 1
 
 #ifndef MOZ_NATIVE_ZLIB
 SHARED_LIBRARY_LIBS = $(DIST)/lib/libmozz_s.$(LIB_SUFFIX)
 #endif
 
-MDDEPDIR := $(MDDEPDIR)_S
-
-GARBAGE_DIRS += .deps
+MDDEPDIR	:= $(MDDEPDIR)_S
+OBJ_SUFFIX	:= S.$(OBJ_SUFFIX)
+COMPILER_DEPEND :=
 
 include $(topsrcdir)/config/rules.mk
 
@@ -60,22 +58,3 @@ DEFINES	+= -D_BSD_SOURCE
 endif
 
 DEFINES += -DSTANDALONE
-
-# Make sure that these custom rules stay in sync with rules.mk
-S_%.$(OBJ_SUFFIX): %.cpp
-	$(REPORT_BUILD)
-	@$(MAKE_DEPS_AUTO)
-ifdef STRICT_CPLUSPLUS_SUFFIX
-	echo "#line 1 \"$*.cpp\"" | cat - $*.cpp > t_$*.cc
-	$(ELOG) $(CCC) -o $@ -c $(COMPILE_CXXFLAGS) t_$*.cc
-	rm -f t_$*.cc
-else
-ifeq ($(MOZ_OS2_TOOLS), VACPP)
-	$(ELOG) $(CCC) -Fo$@ -c $(COMPILE_CXXFLAGS) $<
-else
-	$(ELOG) $(CCC) -o $@ -c $(COMPILE_CXXFLAGS) $<
-endif
-endif #STRICT_CPLUSPLUS_SUFFIX
-
-$(MDDEPDIR)/S_%.pp: %.cpp
-	$(MAKE_DEPS_NOAUTO)

modules/libreg/standalone/Makefile.in

@@ -33,27 +33,13 @@ LIBRARY_NAME	= mozregsa_s
 
 CSRCS		= $(MODULES_LIBREG_SRC_LCSRCS)
 
-OBJS		= $(addprefix S_,$(CSRCS:.c=.$(OBJ_SUFFIX)))
-
 FORCE_STATIC_LIB = 1
 
-MDDEPDIR := $(MDDEPDIR)_S
-
-GARBAGE_DIRS += .deps
+MDDEPDIR	:= $(MDDEPDIR)_S
+OBJ_SUFFIX	:= S.$(OBJ_SUFFIX)
+COMPILER_DEPEND :=
 
 include $(topsrcdir)/config/rules.mk
 
 DEFINES += -DSTANDALONE_REGISTRY
 
-# Make sure that these custom rules stay in sync with rules.mk
-S_%.$(OBJ_SUFFIX): %.c
-	$(REPORT_BUILD)
-	@$(MAKE_DEPS_AUTO)
-ifeq ($(MOZ_OS2_TOOLS), VACPP)
-	$(ELOG) $(CC) -Fo$@ -c $(COMPILE_CFLAGS) $<
-else
-	$(ELOG) $(CC) -o $@ -c $(COMPILE_CFLAGS) $<
-endif
-
-$(MDDEPDIR)/S_%.pp: %.c
-	$(MAKE_DEPS_NOAUTO)

modules/zlib/standalone/Makefile.in

@@ -34,29 +34,15 @@ LIBRARY_NAME	= mozz_s
 CSRCS		= $(MODULES_ZLIB_SRC_LCSRCS)
 EXPORTS		= $(MODULES_ZLIB_SRC_LEXPORTS)
 
-OBJS		= $(addprefix S_,$(CSRCS:.c=.$(OBJ_SUFFIX)))
-
 ifneq ($(MOZ_WIDGET_TOOLKIT),os2)
 FORCE_STATIC_LIB = 1
 endif
 
 EXTRA_DSO_LDOPTS += $(MOZ_COMPONENT_NSPR_LIBS)
 
-MDDEPDIR := $(MDDEPDIR)_S
-
-GARBAGE_DIRS += .deps
+MDDEPDIR	:= $(MDDEPDIR)_S
+OBJ_SUFFIX	:= S.$(OBJ_SUFFIX)
+COMPILER_DEPEND :=
 
 include $(topsrcdir)/config/rules.mk
 
-# Make sure that these custom rules stay in sync with rules.mk
-S_%.$(OBJ_SUFFIX): %.c
-	$(REPORT_BUILD)
-	@$(MAKE_DEPS)
-ifeq ($(MOZ_OS2_TOOLS),VACPP)
-	$(ELOG) $(CC) -Fo$@ -c $(COMPILE_CFLAGS) $<
-else
-	$(ELOG) $(CC) -o $@ -c $(COMPILE_CFLAGS) $<
-endif
-
-$(MDDEPDIR)/S_%.pp: %.c
-	$(MAKE_DEPS_NOAUTO)