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https://github.com/brain-hackers/u-boot-brain
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a350c6a602
The symbolic link to SoC/CPU specific header directory is created during the build, while it is only necessary for ARM, AVR32, SPARC, x86, and some CPUs of PowerPC. For the other architectures, it just results in a broken symbolic link. Introduce CONFIG_CREATE_ARCH_SYMLINK to not create unneeded symbolic links. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
133 lines
4.2 KiB
Makefile
133 lines
4.2 KiB
Makefile
# This helper makefile is used for creating
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# - symbolic links (arch/$ARCH/include/asm/arch
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# - include/autoconf.mk, {spl,tpl}/include/autoconf.mk
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# - include/config.h
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#
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# When our migration to Kconfig is done
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# (= When we move all CONFIGs from header files to Kconfig)
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# this makefile can be deleted.
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__all: include/autoconf.mk include/autoconf.mk.dep
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ifeq ($(shell grep -q '^CONFIG_SPL=y' include/config/auto.conf 2>/dev/null && echo y),y)
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__all: spl/include/autoconf.mk
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endif
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ifeq ($(shell grep -q '^CONFIG_TPL=y' include/config/auto.conf 2>/dev/null && echo y),y)
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__all: tpl/include/autoconf.mk
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endif
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include include/config/auto.conf
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include scripts/Kbuild.include
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# Need to define CC and CPP again here in case the top Makefile did not
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# include config.mk. Some architectures expect CROSS_COMPILE to be defined
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# in arch/$(ARCH)/config.mk
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CC = $(CROSS_COMPILE)gcc
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CPP = $(CC) -E
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include config.mk
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UBOOTINCLUDE := \
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-Iinclude \
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$(if $(KBUILD_SRC), -I$(srctree)/include) \
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-I$(srctree)/arch/$(ARCH)/include \
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-include $(srctree)/include/linux/kconfig.h
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c_flags := $(KBUILD_CFLAGS) $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) \
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$(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
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quiet_cmd_autoconf_dep = GEN $@
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cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M -MP $(c_flags) \
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-MQ include/config/auto.conf $(srctree)/include/common.h > $@ || { \
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rm $@; false; \
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}
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include/autoconf.mk.dep: FORCE
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$(call cmd,autoconf_dep)
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# We are migrating from board headers to Kconfig little by little.
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# In the interim, we use both of
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# - include/config/auto.conf (generated by Kconfig)
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# - include/autoconf.mk (used in the U-Boot conventional configuration)
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# The following rule creates autoconf.mk
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# include/config/auto.conf is grepped in order to avoid duplication of the
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# same CONFIG macros
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quiet_cmd_autoconf = GEN $@
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cmd_autoconf = \
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$(CPP) $(c_flags) $2 -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && { \
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sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp | \
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while read line; do \
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if [ -n "${KCONFIG_IGNORE_DUPLICATES}" ] || \
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! grep -q "$${line%=*}=" include/config/auto.conf; then \
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echo "$$line"; \
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fi \
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done > $@; \
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rm $@.tmp; \
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} || { \
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rm $@.tmp; false; \
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}
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include/autoconf.mk: FORCE
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$(call cmd,autoconf)
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spl/include/autoconf.mk: FORCE
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$(Q)mkdir -p $(dir $@)
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$(call cmd,autoconf,-DCONFIG_SPL_BUILD)
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tpl/include/autoconf.mk: FORCE
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$(Q)mkdir -p $(dir $@)
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$(call cmd,autoconf,-DCONFIG_SPL_BUILD -DCONFIG_TPL_BUILD)
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include/autoconf.mk include/autoconf.mk.dep \
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spl/include/autoconf.mk tpl/include/autoconf.mk: include/config.h
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# include/config.h
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# Prior to Kconfig, it was generated by mkconfig. Now it is created here.
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define filechk_config_h
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(echo "/* Automatically generated - do not edit */"; \
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for i in $$(echo $(CONFIG_SYS_EXTRA_OPTIONS) | sed 's/,/ /g'); do \
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echo \#define CONFIG_$$i \
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| sed '/=/ {s/=/ /;q; } ; { s/$$/ 1/; }'; \
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done; \
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echo \#define CONFIG_BOARDDIR board/$(if $(VENDOR),$(VENDOR)/)$(BOARD);\
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echo \#include \<config_defaults.h\>; \
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echo \#include \<config_uncmd_spl.h\>; \
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echo \#include \<configs/$(CONFIG_SYS_CONFIG_NAME).h\>; \
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echo \#include \<asm/config.h\>; \
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echo \#include \<config_fallbacks.h\>;)
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endef
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include/config.h: scripts/Makefile.autoconf create_symlink FORCE
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$(call filechk,config_h)
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# symbolic links
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# If arch/$(ARCH)/mach-$(SOC)/include/mach exists,
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# make a symbolic link to that directory.
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# Otherwise, create a symbolic link to arch/$(ARCH)/include/asm/arch-$(SOC).
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PHONY += create_symlink
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create_symlink:
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ifdef CONFIG_CREATE_ARCH_SYMLINK
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ifneq ($(KBUILD_SRC),)
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$(Q)mkdir -p include/asm
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$(Q)if [ -d $(KBUILD_SRC)/arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \
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dest=arch/$(ARCH)/mach-$(SOC)/include/mach; \
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else \
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dest=arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)); \
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fi; \
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ln -fsn $(KBUILD_SRC)/$$dest include/asm/arch
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else
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$(Q)if [ -d arch/$(ARCH)/mach-$(SOC)/include/mach ]; then \
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dest=../../mach-$(SOC)/include/mach; \
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else \
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dest=arch-$(if $(SOC),$(SOC),$(CPU)); \
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fi; \
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ln -fsn $$dest arch/$(ARCH)/include/asm/arch
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endif
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endif
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PHONY += FORCE
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FORCE:
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.PHONY: $(PHONY)
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