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kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP

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The variable CPPFLAGS is a wellknown variable and the usage by
kbuild may result in unexpected behaviour.

This patch replace use of CPPFLAGS with KBUILD_CPPFLAGS all over the
tree and enabling one to use:
make CPPFLAGS=...
to specify additional CPP commandline options.

Patch was tested on following architectures:
alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390

Signed-off-by: Sam Ravnborg <[email protected]>
This commit is contained in:
Sam Ravnborg 2007-10-15 22:17:25 +02:00
commit 06c5040cdb
9 changed files with 18 additions and 17 deletions
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2
drivers/atm/Makefile
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@ -41,7 +41,7 @@ ifeq ($(CONFIG_ATM_FORE200E_PCA),y)
# guess the target endianess to choose the right PCA-200E firmware image
ifeq ($(CONFIG_ATM_FORE200E_PCA_DEFAULT_FW),y)
byteorder.h := include$(if $(patsubst $(srctree),,$(objtree)),2)/asm/byteorder.h
CONFIG_ATM_FORE200E_PCA_FW := $(obj)/pca200e$(if $(shell $(CC) $(CPPFLAGS) -E -dM $(byteorder.h) | grep ' __LITTLE_ENDIAN '),.bin,_ecd.bin2)
CONFIG_ATM_FORE200E_PCA_FW := $(obj)/pca200e$(if $(shell $(CC) $(KBUILD_CPPFLAGS) -E -dM $(byteorder.h) | grep ' __LITTLE_ENDIAN '),.bin,_ecd.bin2)
endif
endif