linux/arch/h8300/Makefile
Sam Ravnborg a0f97e06a4 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 <sam@ravnborg.org>
2007-10-14 22:21:35 +02:00

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1.9 KiB
Makefile

#
# arch/h8300/Makefile
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# (C) Copyright 2002,2003 Yoshinori Sato <ysato@users.sourceforge.jp>
#
platform-$(CONFIG_CPU_H8300H) := h8300h
platform-$(CONFIG_CPU_H8S) := h8s
PLATFORM := $(platform-y)
board-$(CONFIG_H8300H_GENERIC) := generic
board-$(CONFIG_H8300H_AKI3068NET) := aki3068net
board-$(CONFIG_H8300H_H8MAX) := h8max
board-$(CONFIG_H8300H_SIM) := generic
board-$(CONFIG_H8S_GENERIC) := generic
board-$(CONFIG_H8S_EDOSK2674) := edosk2674
board-$(CONFIG_H8S_SIM) := generic
BOARD := $(board-y)
model-$(CONFIG_RAMKERNEL) := ram
model-$(CONFIG_ROMKERNEL) := rom
MODEL := $(model-y)
cflags-$(CONFIG_CPU_H8300H) := -mh
ldflags-$(CONFIG_CPU_H8300H) := -mh8300helf
cflags-$(CONFIG_CPU_H8S) := -ms
ldflags-$(CONFIG_CPU_H8S) := -mh8300self
KBUILD_CFLAGS += $(cflags-y)
KBUILD_CFLAGS += -mint32 -fno-builtin
KBUILD_CFLAGS += -g
KBUILD_CFLAGS += -D__linux__
KBUILD_CFLAGS += -DUTS_SYSNAME=\"uClinux\"
AFLAGS += -DPLATFORM=$(PLATFORM) -DMODEL=$(MODEL) $(cflags-y)
LDFLAGS += $(ldflags-y)
CROSS_COMPILE = h8300-elf-
LIBGCC := $(shell $(CROSS-COMPILE)$(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
head-y := arch/$(ARCH)/platform/$(PLATFORM)/$(BOARD)/crt0_$(MODEL).o
core-y += arch/$(ARCH)/kernel/ \
arch/$(ARCH)/mm/
ifdef PLATFORM
core-y += arch/$(ARCH)/platform/$(PLATFORM)/ \
arch/$(ARCH)/platform/$(PLATFORM)/$(BOARD)/
endif
libs-y += arch/$(ARCH)/lib/ $(LIBGCC)
boot := arch/h8300/boot
export MODEL PLATFORM BOARD
archmrproper:
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
vmlinux.srec vmlinux.bin zImage: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
define archhelp
@echo 'vmlinux.bin - Create raw binary'
@echo 'vmlinux.srec - Create srec binary'
@echo 'zImage - Compressed kernel image'
endef