From a0f97e06a43cf524e616f09e6af3398e1e9c1c5b Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 14 Oct 2007 22:21:35 +0200 Subject: kbuild: enable 'make CFLAGS=...' to add additional options to CC The variable CFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. On top of that several people over time has asked for a way to pass in additional flags to gcc. This patch replace use of CFLAGS with KBUILD_CFLAGS all over the tree and enabling one to use: make CFLAGS=... to specify additional gcc commandline options. One usecase is when trying to find gcc bugs but other use cases has been requested too. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k Test was simple to do a defconfig build, apply the patch and check that nothing got rebuild. Signed-off-by: Sam Ravnborg --- arch/ia64/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/ia64/Makefile') diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile index 21033ed8330..9708a29c70b 100644 --- a/arch/ia64/Makefile +++ b/arch/ia64/Makefile @@ -44,7 +44,7 @@ ifeq ($(call cc-version),0304) cflags-$(CONFIG_MCKINLEY) += -mtune=mckinley endif -CFLAGS += $(cflags-y) +KBUILD_CFLAGS += $(cflags-y) head-y := arch/ia64/kernel/head.o arch/ia64/kernel/init_task.o libs-y += arch/ia64/lib/ -- cgit v1.2.3 From 06c5040cdb13d27adad118f2fbfae905a1911b37 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Mon, 15 Oct 2007 22:17:25 +0200 Subject: kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP 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 --- arch/ia64/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/ia64/Makefile') diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile index 9708a29c70b..34951aa2370 100644 --- a/arch/ia64/Makefile +++ b/arch/ia64/Makefile @@ -29,7 +29,7 @@ cflags-y := -pipe $(EXTRA) -ffixed-r13 -mfixed-range=f12-f15,f32-f127 \ CFLAGS_KERNEL := -mconstant-gp GAS_STATUS = $(shell $(srctree)/arch/ia64/scripts/check-gas "$(CC)" "$(OBJDUMP)") -CPPFLAGS += $(shell $(srctree)/arch/ia64/scripts/toolchain-flags "$(CC)" "$(OBJDUMP)" "$(READELF)") +KBUILD_CPPFLAGS += $(shell $(srctree)/arch/ia64/scripts/toolchain-flags "$(CC)" "$(OBJDUMP)" "$(READELF)") ifeq ($(GAS_STATUS),buggy) $(error Sorry, you need a newer version of the assember, one that is built from \ -- cgit v1.2.3