kbuild: cmd_dtc_cpp: extract deps from both gcc -E and dtc

[linux-drm-fsl-dcu.git] / scripts / Makefile.lib

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index af35521b00a4d1578939bce1098e33facc7b460a..6104335234c6c1b64501c5aa86d60322f686b2e4 100644 (file)
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -156,7 +156,7 @@ cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 
 ld_flags       = $(LDFLAGS) $(ldflags-y)
 
-dtc_cpp_flags  = -Wp,-MD,$(depfile) -nostdinc                            \
+dtc_cpp_flags  = -Wp,-MD,$(depfile).pre -nostdinc                        \
                 -I$(srctree)/arch/$(SRCARCH)/boot/dts                   \
                 -I$(srctree)/arch/$(SRCARCH)/boot/dts/include           \
                 -undef -D__DTS__
@@ -278,7 +278,8 @@ dtc-tmp = $(subst $(comma),_,$(dot-target).dts)
 
 quiet_cmd_dtc_cpp = DTC+CPP $@
 cmd_dtc_cpp = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
-       $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) $(dtc-tmp)
+       $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile).dtc $(dtc-tmp) ; \
+       cat $(depfile).pre $(depfile).dtc > $(depfile)
 
 $(obj)/%.dtb: $(src)/%.dtsp FORCE
        $(call if_changed_dep,dtc_cpp)