Make $(obj)/build.h an explicit dependency for all

object files, as it's dragged into the build by
-include $(obj)/build.h for pretty much everything.

Also, generate build.h atomically.

This fixes parallel build with kconfig on my box.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5062 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

diff --git a/Makefile b/Makefile
index 067b83dea8d9366ff17ea68bc5769f3cbc0fe632..51bdcecfb0201a3607481d1712a3c0ac849bcaed 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -140,7 +140,7 @@ $(eval $(call evaluate_subdirs))
 
 
 define c_dsl_template
-$(obj)/$(1)%.c: src/$(1)%.dsl
+$(obj)/$(1)%.c: src/$(1)%.dsl $(obj)/build.h
        @printf "    IASL       $$(subst $$(shell pwd)/,,$$(@))\n"
        iasl -p $$(basename $$@) -tc $$<
        perl -pi -e 's/AmlCode/AmlCode_$$(notdir $$(basename $$@))/g' $$(basename $$@).hex
@@ -148,31 +148,31 @@ $(obj)/$(1)%.c: src/$(1)%.dsl
 endef
 
 define objs_c_template
-$(obj)/$(1)%.o: src/$(1)%.c
+$(obj)/$(1)%.o: src/$(1)%.c $(obj)/build.h
        @printf "    CC         $$(subst $$(obj)/,,$$(@))\n"
        $(CC) -m32 $$(CFLAGS) -c -o $$@ $$<
 endef
 
 define objs_S_template
-$(obj)/$(1)%.o: src/$(1)%.S
+$(obj)/$(1)%.o: src/$(1)%.S $(obj)/build.h
        @printf "    CC         $$(subst $$(obj)/,,$$(@))\n"
        $(CC) -m32 -DASSEMBLY $$(CFLAGS) -c -o $$@ $$<
 endef
 
 define initobjs_c_template
-$(obj)/$(1)%.o: src/$(1)%.c
+$(obj)/$(1)%.o: src/$(1)%.c $(obj)/build.h
        @printf "    CC         $$(subst $$(obj)/,,$$(@))\n"
        $(CC) -m32 $$(CFLAGS) -c -o $$@ $$<
 endef
 
 define initobjs_S_template
-$(obj)/$(1)%.o: src/$(1)%.S
+$(obj)/$(1)%.o: src/$(1)%.S $(obj)/build.h
        @printf "    CC         $$(subst $$(obj)/,,$$(@))\n"
        $(CC) -m32 -DASSEMBLY $$(CFLAGS) -c -o $$@ $$<
 endef
 
 define drivers_c_template
-$(obj)/$(1)%.o: src/$(1)%.c
+$(obj)/$(1)%.o: src/$(1)%.c $(obj)/build.h
        @printf "    CC         $$(subst $$(obj)/,,$$(@))\n"
        $(CC) -m32 $$(CFLAGS) -c -o $$@ $$<
 endef
@@ -257,20 +257,24 @@ prepare:
        mkdir -p $(obj)/util/kconfig/lxdialog
        test -n "$(alldirs)" && mkdir -p $(alldirs) || true
 
-prepare2:
+prepare2: $(obj)/build.h
+
+$(obj)/build.h:
        @printf "    GEN        build.h\n"
-       printf "#define COREBOOT_VERSION \"$(KERNELVERSION)\"\n" > $(obj)/build.h
-       printf "#define COREBOOT_EXTRA_VERSION \"$(COREBOOT_EXTRA_VERSION)\"\n" >> $(obj)/build.h
-       printf "#define COREBOOT_BUILD \"`LANG= date`\"\n" >> $(obj)/build.h
-       printf "\n" >> $(obj)/build.h
-       printf "#define COREBOOT_COMPILER \"$(shell LANG= $(CC) --version | head -n1)\"\n" >> $(obj)/build.h
-       printf "#define COREBOOT_ASSEMBLER \"$(shell LANG= $(AS) --version | head -n1)\"\n" >> $(obj)/build.h
-       printf "#define COREBOOT_LINKER \"$(shell LANG= $(LD) --version | head -n1)\"\n" >> $(obj)/build.h
-       printf "#define COREBOOT_COMPILE_TIME \"`LANG= date +%T`\"\n" >> $(obj)/build.h
-       printf "#define COREBOOT_COMPILE_BY \"$(shell PATH=$$PATH:/usr/ucb whoami)\"\n" >> $(obj)/build.h
-       printf "#define COREBOOT_COMPILE_HOST \"$(shell hostname)\"\n" >> $(obj)/build.h
-       printf "#define COREBOOT_COMPILE_DOMAIN \"$(shell test `uname -s` = "Linux" && dnsdomainname || domainname)\"\n" >> $(obj)/build.h
-       printf "#include \"config.h\"\n" >> $(obj)/build.h
+       rm -f $(obj)/build.h
+       printf "#define COREBOOT_VERSION \"$(KERNELVERSION)\"\n" > $(obj)/build.ht
+       printf "#define COREBOOT_EXTRA_VERSION \"$(COREBOOT_EXTRA_VERSION)\"\n" >> $(obj)/build.ht
+       printf "#define COREBOOT_BUILD \"`LANG= date`\"\n" >> $(obj)/build.ht
+       printf "\n" >> $(obj)/build.ht
+       printf "#define COREBOOT_COMPILER \"$(shell LANG= $(CC) --version | head -n1)\"\n" >> $(obj)/build.ht
+       printf "#define COREBOOT_ASSEMBLER \"$(shell LANG= $(AS) --version | head -n1)\"\n" >> $(obj)/build.ht
+       printf "#define COREBOOT_LINKER \"$(shell LANG= $(LD) --version | head -n1)\"\n" >> $(obj)/build.ht
+       printf "#define COREBOOT_COMPILE_TIME \"`LANG= date +%T`\"\n" >> $(obj)/build.ht
+       printf "#define COREBOOT_COMPILE_BY \"$(subst \,@,$(shell PATH=$$PATH:/usr/ucb whoami))\"\n" >> $(obj)/build.ht
+       printf "#define COREBOOT_COMPILE_HOST \"$(shell hostname)\"\n" >> $(obj)/build.ht
+       printf "#define COREBOOT_COMPILE_DOMAIN \"$(shell test `uname -s` = "Linux" && dnsdomainname || domainname)\"\n" >> $(obj)/build.ht
+       printf "#include \"config.h\"\n" >> $(obj)/build.ht
+       mv $(obj)/build.ht $(obj)/build.h
 
 doxy: doxygen
 doxygen: