[PATCH 1/3] Use "hardcoded" dependencies when compiler doesn't support -MM

[Mike Hommey]

From: Mike Hommey <mh at glandium.org>

---
 Makefile.in  |   17 ++++++++++++++---
 configure.ac |    3 +++
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 94f4869..0c8e76a 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -54,6 +54,7 @@ PIC_CFLAGS = @PIC_CFLAGS@
 CTARGET = @CTARGET@
 LDTARGET = @LDTARGET@
 MKLIB = @MKLIB@
+CC_MM = @CC_MM@
 
 ifeq (macho, $(ABI))
 TEST_LIBRARY_PATH := DYLD_FALLBACK_LIBRARY_PATH="$(objroot)lib"
@@ -136,9 +137,11 @@ build_doc: $(DOCS)
 #
 # Include generated dependency files.
 #
+ifdef CC_MM
 -include $(COBJS:%.$(O)=%.d)
 -include $(CPICOBJS:%.$(O)=%.d)
 -include $(CTESTOBJS:%.$(O)=%.d)
+endif
 
 $(COBJS): $(objroot)src/%.$(O): $(srcroot)src/%.c
 $(CPICOBJS): $(objroot)src/%.pic.$(O): $(srcroot)src/%.c
@@ -149,10 +152,21 @@ ifneq ($(IMPORTLIB),$(SO))
 $(COBJS): CPPFLAGS += -DDLLEXPORT
 endif
 
+ifndef CC_MM
+# Dependencies
+HEADER_DIRS = $(srcroot)include/jemalloc/internal \
+	$(objroot)include/jemalloc $(objroot)include/jemalloc/internal
+HEADERS = $(wildcard $(foreach dir,$(HEADER_DIRS),$(dir)/*.h))
+$(COBJS) $(CPICOBJS) $(CTESTOBJS): $(HEADERS)
+$(CTESTOBJS): $(objroot)test/jemalloc_test.h
+endif
+
 $(COBJS) $(CPICOBJS) $(CTESTOBJS): %.$(O):
 	@mkdir -p $(@D)
 	$(CC) $(CFLAGS) -c $(CPPFLAGS) $(CTARGET) $<
+ifdef CC_MM
 	@$(CC) -MM $(CPPFLAGS) -MT $@ -o $(@:%.$(O)=%.d) $<
+endif
 
 ifneq ($(SOREV),$(SO))
 %.$(SO) : %.$(SOREV)
@@ -263,11 +277,8 @@ check: tests
 clean:
 	rm -f $(COBJS)
 	rm -f $(CPICOBJS)
-	rm -f $(COBJS:%.$(O)=%.d)
-	rm -f $(CPICOBJS:%.$(O)=%.d)
 	rm -f $(CTESTOBJS:%.$(O)=%$(EXE))
 	rm -f $(CTESTOBJS)
-	rm -f $(CTESTOBJS:%.$(O)=%.d)
 	rm -f $(CTESTOBJS:%.$(O)=%.out)
 	rm -f $(DSOS) $(STATIC_LIBS)
 
diff --git a/configure.ac b/configure.ac
index eeb2a29..3b32b88 100644
--- a/configure.ac
+++ b/configure.ac
@@ -227,6 +227,7 @@ CTARGET='-o $@'
 LDTARGET='-o $@'
 EXTRA_LDFLAGS=
 MKLIB='ar crus $@'
+CC_MM=1
 
 dnl Platform-specific settings.  abi and RPATH can probably be determined
 dnl programmatically, but doing so is error-prone, which makes it generally
@@ -307,6 +308,7 @@ case "${host}" in
 	  CTARGET='-Fo$@'
 	  LDTARGET='-Fe$@'
 	  MKLIB='lib -nologo -out:$@'
+	  CC_MM=
         else
 	  importlib="${so}"
 	  DSO_LDFLAGS="-shared"
@@ -337,6 +339,7 @@ AC_SUBST([PIC_CFLAGS])
 AC_SUBST([CTARGET])
 AC_SUBST([LDTARGET])
 AC_SUBST([MKLIB])
+AC_SUBST([CC_MM])
 
 if test "x$abi" != "xpecoff"; then
   dnl Heap profiling uses the log(3) function.
-- 
1.7.10