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/cris/Makefile | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'arch/cris') diff --git a/arch/cris/Makefile b/arch/cris/Makefile index ee114699ef8e..32ef6f3cce06 100644 --- a/arch/cris/Makefile +++ b/arch/cris/Makefile @@ -31,16 +31,16 @@ OBJCOPYFLAGS := -O binary -R .note -R .comment -S CPPFLAGS_vmlinux.lds = -DDRAM_VIRTUAL_BASE=0x$(CONFIG_ETRAX_DRAM_VIRTUAL_BASE) AFLAGS += -mlinux -CFLAGS := $(CFLAGS) -mlinux -march=$(arch-y) -pipe +KBUILD_CFLAGS += -mlinux -march=$(arch-y) -pipe ifdef CONFIG_FRAME_POINTER -CFLAGS := $(subst -fomit-frame-pointer,,$(CFLAGS)) -g -CFLAGS += -fno-omit-frame-pointer +KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g +KBUILD_CFLAGS += -fno-omit-frame-pointer endif head-y := arch/$(ARCH)/$(SARCH)/kernel/head.o -LIBGCC = $(shell $(CC) $(CFLAGS) -print-file-name=libgcc.a) +LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-file-name=libgcc.a) core-y += arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/ core-y += arch/$(ARCH)/$(SARCH)/kernel/ arch/$(ARCH)/$(SARCH)/mm/ -- cgit v1.2.2 From 222d394d30e74bb7a2a65029fcea68107b0d0eb6 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Mon, 15 Oct 2007 21:59:31 +0200 Subject: kbuild: enable 'make AFLAGS=...' to add additional options to AS The variable AFLAGS 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 AFLAGS with KBUILD_AFLAGS all over the tree. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390 Signed-off-by: Sam Ravnborg --- arch/cris/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/cris') diff --git a/arch/cris/Makefile b/arch/cris/Makefile index 32ef6f3cce06..e6bf00c262e0 100644 --- a/arch/cris/Makefile +++ b/arch/cris/Makefile @@ -29,7 +29,7 @@ LD = $(CROSS_COMPILE)ld -mcrislinux OBJCOPYFLAGS := -O binary -R .note -R .comment -S CPPFLAGS_vmlinux.lds = -DDRAM_VIRTUAL_BASE=0x$(CONFIG_ETRAX_DRAM_VIRTUAL_BASE) -AFLAGS += -mlinux +KBUILD_AFLAGS += -mlinux KBUILD_CFLAGS += -mlinux -march=$(arch-y) -pipe -- cgit v1.2.2