diff options
| author | Stephen Warren <swarren@nvidia.com> | 2013-03-06 10:28:02 -0700 |
|---|---|---|
| committer | Dong Aisheng <b29396@freescale.com> | 2013-05-20 13:52:03 +0800 |
| commit | db882846f458c5e82238efe198500ae6eda8bc04 (patch) | |
| tree | abe94ba03f6d06248c500a9b32bbb4d362bcb495 /scripts | |
| parent | cab58f24e63b831a780f2c73cfcf38b277ec53ab (diff) | |
kbuild: cmd_dtc_cpp: extract deps from both gcc -E and dtc
Prior to this change, when compiling *.dts to *.dtb, the dependency
output from dtc would be used, and when compiling *.dtsp to *.dtb, the
dependency output from gcc -E alone would be used, despite dtc also
being invoked (on a temporary file that was guaranteed to have no
dependencies).
With this change, when compiling *.dtsp to *.dtb, the dependency files
from both gcc -E and dtc are used. This will allow cmd_dtc_cpp to
replace cmd_dtc in a future change. In turn, that will allow the C pre-
processor to be run transparently on *.dts, without the need to a
separate rule or file extension to trigger it.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/Makefile.lib | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index af35521b00a4..6104335234c6 100644 --- 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) |