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linux/arch/sh/Makefile
Franck Bui-Huu 49a5ba46c5 sh: Use relative paths for mach/cpu symlinks. 
When building the kernel without passing the O= command line parameter
there's no point to use absolute paths for them.

Usually relative paths are preferred because they survive directory
moves, work across networked file systems and chrooted environments.

Absolute paths are still used if an output directory is given.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-21 12:22:01 +09:00

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#
# arch/sh/Makefile
#
# Copyright (C) 1999 Kaz Kojima
# Copyright (C) 2002, 2003, 2004 Paul Mundt
# Copyright (C) 2002 M. R. Brown
#
# 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.
#
isa-y := any
isa-$(CONFIG_SH_DSP) := sh
isa-$(CONFIG_CPU_SH2) := sh2
isa-$(CONFIG_CPU_SH2A) := sh2a
isa-$(CONFIG_CPU_SH3) := sh3
isa-$(CONFIG_CPU_SH4) := sh4
isa-$(CONFIG_CPU_SH4A) := sh4a
isa-$(CONFIG_CPU_SH4AL_DSP) := sh4al
isa-$(CONFIG_CPU_SH5) := shmedia
isa-$(CONFIG_SH_DSP) := $(isa-y)-dsp
ifndef CONFIG_SH_DSP
ifndef CONFIG_SH_FPU
isa-y := $(isa-y)-nofpu
endif
endif
isa-y := $(isa-y)-up
cflags-$(CONFIG_CPU_SH2) := $(call cc-option,-m2,)
cflags-$(CONFIG_CPU_SH2A) += $(call cc-option,-m2a,) \
$(call cc-option,-m2a-nofpu,)
cflags-$(CONFIG_CPU_SH3) := $(call cc-option,-m3,)
cflags-$(CONFIG_CPU_SH4) := $(call cc-option,-m4,) \
$(call cc-option,-mno-implicit-fp,-m4-nofpu)
cflags-$(CONFIG_CPU_SH4A) += $(call cc-option,-m4a,) \
$(call cc-option,-m4a-nofpu,)
cflags-$(CONFIG_CPU_SH5) := $(call cc-option,-m5-32media-nofpu,)
cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mb
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -ml
#
# -Wa,-isa= tuning implies -Wa,-dsp for the versions of binutils that
# support it, while -Wa,-dsp by itself limits the range of usable opcodes
# on certain CPU subtypes. Try the ISA variant first, and if that fails,
# fall back on -Wa,-dsp for the old binutils versions. Even without DSP
# opcodes, we always want the best ISA tuning the version of binutils
# will provide.
#
isaflags-y := $(call as-option,-Wa$(comma)-isa=$(isa-y),)
isaflags-$(CONFIG_SH_DSP) := \
$(call as-option,-Wa$(comma)-isa=$(isa-y),-Wa$(comma)-dsp)
cflags-y += $(isaflags-y) -ffreestanding
cflags-$(CONFIG_MORE_COMPILE_OPTIONS) += \
$(shell echo $(CONFIG_COMPILE_OPTIONS) | sed -e 's/"//g')
OBJCOPYFLAGS := -O binary -R .note -R .note.gnu.build-id -R .comment \
-R .stab -R .stabstr -S
# Give the various platforms the opportunity to set default image types
defaultimage-$(CONFIG_SUPERH32) := zImage
# Set some sensible Kbuild defaults
KBUILD_DEFCONFIG := r7780mp_defconfig
KBUILD_IMAGE := $(defaultimage-y)
#
# Choosing incompatible machines durings configuration will result in
# error messages during linking.
#
ifdef CONFIG_SUPERH32
LDFLAGS_vmlinux += -e _stext
else
LDFLAGS_vmlinux += --defsym phys_stext=_stext-$(CONFIG_PAGE_OFFSET) \
--defsym phys_stext_shmedia=phys_stext+1 \
-e phys_stext_shmedia
endif
ifdef CONFIG_CPU_LITTLE_ENDIAN
LDFLAGS_vmlinux += --defsym 'jiffies=jiffies_64'
LDFLAGS += -EL
else
LDFLAGS_vmlinux += --defsym 'jiffies=jiffies_64+4'
LDFLAGS += -EB
endif
KBUILD_CFLAGS += -pipe $(cflags-y)
KBUILD_AFLAGS += $(cflags-y)
head-y := arch/sh/kernel/init_task.o
head-$(CONFIG_SUPERH32) += arch/sh/kernel/head_32.o
head-$(CONFIG_SUPERH64) += arch/sh/kernel/head_64.o
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
core-y += arch/sh/kernel/ arch/sh/mm/
core-$(CONFIG_SH_FPU_EMU) += arch/sh/math-emu/
# Boards
machdir-$(CONFIG_SH_SOLUTION_ENGINE) += se/770x
machdir-$(CONFIG_SH_7722_SOLUTION_ENGINE) += se/7722
machdir-$(CONFIG_SH_7751_SOLUTION_ENGINE) += se/7751
machdir-$(CONFIG_SH_7780_SOLUTION_ENGINE) += se/7780
machdir-$(CONFIG_SH_7343_SOLUTION_ENGINE) += se/7343
machdir-$(CONFIG_SH_HP6XX) += hp6xx
machdir-$(CONFIG_SH_DREAMCAST) += dreamcast
machdir-$(CONFIG_SH_MPC1211) += mpc1211
machdir-$(CONFIG_SH_SH03) += sh03
machdir-$(CONFIG_SH_SECUREEDGE5410) += snapgear
machdir-$(CONFIG_SH_RTS7751R2D) += renesas/rts7751r2d
machdir-$(CONFIG_SH_7751_SYSTEMH) += renesas/systemh
machdir-$(CONFIG_SH_EDOSK7705) += renesas/edosk7705
machdir-$(CONFIG_SH_HIGHLANDER) += renesas/r7780rp
machdir-$(CONFIG_SH_MIGOR) += renesas/migor
machdir-$(CONFIG_SH_SDK7780) += renesas/sdk7780
machdir-$(CONFIG_SH_X3PROTO) += renesas/x3proto
machdir-$(CONFIG_SH_SH4202_MICRODEV) += superh/microdev
machdir-$(CONFIG_SH_LANDISK) += landisk
machdir-$(CONFIG_SH_TITAN) += titan
machdir-$(CONFIG_SH_SHMIN) += shmin
machdir-$(CONFIG_SH_7206_SOLUTION_ENGINE) += se/7206
machdir-$(CONFIG_SH_7619_SOLUTION_ENGINE) += se/7619
machdir-$(CONFIG_SH_LBOX_RE2) += lboxre2
machdir-$(CONFIG_SH_MAGIC_PANEL_R2) += magicpanelr2
machdir-$(CONFIG_SH_CAYMAN) += cayman
incdir-y := $(notdir $(machdir-y))
ifneq ($(machdir-y),)
core-y += $(addprefix arch/sh/boards/, \
$(filter-out ., $(patsubst %,%/,$(machdir-y))))
endif
# Companion chips
core-$(CONFIG_HD6446X_SERIES) += arch/sh/cchips/hd6446x/
cpuincdir-$(CONFIG_CPU_SH2) := cpu-sh2
cpuincdir-$(CONFIG_CPU_SH2A) := cpu-sh2a
cpuincdir-$(CONFIG_CPU_SH3) := cpu-sh3
cpuincdir-$(CONFIG_CPU_SH4) := cpu-sh4
cpuincdir-$(CONFIG_CPU_SH5) := cpu-sh5
libs-$(CONFIG_SUPERH32) := arch/sh/lib/ $(libs-y)
libs-$(CONFIG_SUPERH64) := arch/sh/lib64/ $(libs-y)
libs-y += $(LIBGCC)
drivers-y += arch/sh/drivers/
drivers-$(CONFIG_OPROFILE) += arch/sh/oprofile/
boot := arch/sh/boot
ifneq ($(KBUILD_SRC),)
incdir-prefix := $(srctree)/include/asm-sh/
else
incdir-prefix :=
endif
# Update machine arch and proc symlinks if something which affects
# them changed. We use .arch and .mach to indicate when they were
# updated last, otherwise make uses the target directory mtime.
include/asm-sh/.cpu: $(wildcard include/config/cpu/*.h) \
include/config/auto.conf FORCE
@echo ' SYMLINK include/asm-sh/cpu -> include/asm-sh/$(cpuincdir-y)'
$(Q)if [ ! -d include/asm-sh ]; then mkdir -p include/asm-sh; fi
$(Q)ln -fsn $(incdir-prefix)$(cpuincdir-y) include/asm-sh/cpu
@touch $@
# Most boards have their own mach directories. For the ones that
# don't, just reference the parent directory so the semantics are
# kept roughly the same.
#
# When multiple boards are compiled in at the same time, preference
# for the mach link is given to whichever has a directory for its
# headers. However, this is only a workaround until platforms that
# can live in the same kernel image back away from relying on the
# mach link.
include/asm-sh/.mach: $(wildcard include/config/sh/*.h) \
include/config/auto.conf FORCE
$(Q)if [ ! -d include/asm-sh ]; then mkdir -p include/asm-sh; fi
$(Q)rm -f include/asm-sh/mach
$(Q)for i in $(incdir-y); do \
if [ -d $(srctree)/include/asm-sh/$$i ]; then \
echo -n ' SYMLINK include/asm-sh/mach -> '; \
echo -e "include/asm-sh/$$i"; \
ln -fsn $(incdir-prefix)$$i \
include/asm-sh/mach; \
else \
if [ ! -d include/asm-sh/mach ]; then \
echo -n ' SYMLINK include/asm-sh/mach -> '; \
echo -e 'include/asm-sh'; \
ln -fsn $(incdir-prefix)../asm-sh include/asm-sh/mach; \
fi; \
fi; \
done
@touch $@
PHONY += maketools FORCE
maketools: include/linux/version.h FORCE
$(Q)$(MAKE) $(build)=arch/sh/tools include/asm-sh/machtypes.h
all: $(KBUILD_IMAGE)
zImage uImage uImage.srec vmlinux.srec: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
compressed: zImage
archprepare: include/asm-sh/.cpu include/asm-sh/.mach maketools \
arch/sh/lib64/syscalltab.h
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
define archhelp
@echo '* zImage - Compressed kernel image'
@echo ' vmlinux.srec - Create an ELF S-record'
@echo ' uImage - Create a bootable image for U-Boot'
@echo ' uImage.srec - Create an S-record for U-Boot'
endef
define filechk_gen-syscalltab
(set -e; \
echo "/*"; \
echo " * DO NOT MODIFY."; \
echo " *"; \
echo " * This file was generated by arch/sh/Makefile"; \
echo " * Any changes will be reverted at build time."; \
echo " */"; \
echo ""; \
echo "#ifndef __SYSCALLTAB_H"; \
echo "#define __SYSCALLTAB_H"; \
echo ""; \
echo "#include <linux/kernel.h>"; \
echo ""; \
echo "struct syscall_info {"; \
echo " const char *name;"; \
echo "} syscall_info_table[] = {"; \
sed -e '/^.*\.long /!d;s// { "/;s/\(\([^/]*\)\/\)\{1\}.*/\2/; \
s/[ \t]*$$//g;s/$$/" },/;s/\("\)sys_/\1/g'; \
echo "};"; \
echo ""; \
echo "#define NUM_SYSCALL_INFO_ENTRIES ARRAY_SIZE(syscall_info_table)";\
echo ""; \
echo "#endif /* __SYSCALLTAB_H */" )
endef
arch/sh/lib64/syscalltab.h: arch/sh/kernel/syscalls_64.S
$(call filechk,gen-syscalltab)
CLEAN_FILES += arch/sh/lib64/syscalltab.h \
include/asm-sh/machtypes.h \
include/asm-sh/cpu include/asm-sh/.cpu \
include/asm-sh/mach include/asm-sh/.mach
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