linux-kernel - [PATCH 4/7] kbuild: always run gcc -E on *.dts, remove cmd_dtc

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Date:	Wed,  6 Mar 2013 11:23:00 -0700
From:	Stephen Warren <swarren@...dotorg.org>
To:	arm@...nel.org, Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>
Cc:	Michal Marek <mmarek@...e.cz>, Shawn Guo <shawn.guo@...aro.org>,
	linux-kbuild@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Stephen Warren <swarren@...dia.com>
Subject: [PATCH 4/7] kbuild: always run gcc -E on *.dts, remove cmd_dtc_cpp

From: Stephen Warren <swarren@...dia.com>

Replace cmd_dtc with cmd_dtc_cpp, and delete the latter.

Previously, a special file extension (.dtsp) was required to trigger
the C pre-processor to run on device tree files. This was ugly. Now that
previous changes have enhanced cmd_dtc_cpp to collect dependency
information from both gcc -E and dtc, we can transparently run the pre-
processor on all device tree files, irrespective of whether they

Signed-off-by: Stephen Warren <swarren@...dia.com>
---
 scripts/Makefile.lib |   12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 6104335..ee5cfc4 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -269,21 +269,15 @@ $(obj)/%.dtb.S: $(obj)/%.dtb
 	$(call cmd,dt_S_dtb)
 
 quiet_cmd_dtc = DTC     $@
-cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile) $<
+cmd_dtc = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(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)/%.dts FORCE
 	$(call if_changed_dep,dtc)
 
 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) -d $(depfile).dtc $(dtc-tmp) ; \
-	cat $(depfile).pre $(depfile).dtc > $(depfile)
-
-$(obj)/%.dtb: $(src)/%.dtsp FORCE
-	$(call if_changed_dep,dtc_cpp)
-
 # Bzip2
 # ---------------------------------------------------------------------------
 
-- 
1.7.10.4

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