BUILD: add -MMD to iasl cpp call

Right now there are no dependency rules for compiling dsdt.asl.
If ACPI code includes asl files, the dsdt isn't recompiled if any
of those file is changed. Add the flags to the preprocessor call
to have it generate the neccessary dependency rule.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6456 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

diff --git a/Makefile.inc b/Makefile.inc
index 7cde3786d876ea19aeca0f80be149046cefa2fbb..54d472a4ff7939f6f9daee0dd0ac146e1870194f 100644 (file)
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -63,7 +63,7 @@ romstage-c-deps:=$$(OPTION_TABLE_H)
 define ramstage-objs_asl_template
 $(obj)/$(1).ramstage.o: src/$(1).asl
        @printf "    IASL       $$(subst $(top)/,,$$(@))\n"
-       $(CPP) -D__ACPI__ -P -include $(abspath $(obj)/config.h) -I$(src) -I$(src)/mainboard/$(MAINBOARDDIR) $$< -o $$(basename $$@).asl
+       $(CPP) -MMD -MT $$(@) -D__ACPI__ -P -include $(abspath $(obj)/config.h) -I$(src) -I$(src)/mainboard/$(MAINBOARDDIR) $$< -o $$(basename $$@).asl
        iasl -p $$(obj)/$(1) -tc $$(basename $$@).asl
        mv $$(obj)/$(1).hex $$(basename $$@).c
        $(CC) $$(CFLAGS) $$(if $$(subst dsdt,,$$(basename $$(notdir $(1)))), -DAmlCode=AmlCode_$$(basename $$(notdir $(1)))) -c -o $$@ $$(basename $$@).c