1# This helper makefile is used for creating 2# - symbolic links (arch/$ARCH/include/asm/arch 3# - include/autoconf.mk, {spl,tpl}/include/autoconf.mk 4# - include/config.h 5# 6# When our migration to Kconfig is done 7# (= When we move all CONFIGs from header files to Kconfig) 8# this makefile can be deleted. 9 10# obj is "include" or "spl/include" or "tpl/include" 11# for non-SPL, SPL, TPL, respectively 12include $(obj)/config/auto.conf 13 14include scripts/Kbuild.include 15 16# Need to define CC and CPP again here in case the top Makefile did not 17# include config.mk. Some architectures expect CROSS_COMPILE to be defined 18# in arch/$(ARCH)/config.mk 19CC = $(CROSS_COMPILE)gcc 20CPP = $(CC) -E 21 22include config.mk 23 24UBOOTINCLUDE := \ 25 -I$(obj) \ 26 -Iinclude \ 27 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 28 -I$(srctree)/arch/$(ARCH)/include \ 29 -include $(srctree)/include/linux/kconfig.h 30 31c_flags := $(KBUILD_CFLAGS) $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) \ 32 $(UBOOTINCLUDE) $(NOSTDINC_FLAGS) 33 34quiet_cmd_autoconf_dep = GEN $@ 35 cmd_autoconf_dep = $(CC) -x c -DDO_DEPS_ONLY -M -MP $(c_flags) \ 36 -MQ include/config/auto.conf $(srctree)/include/common.h > $@ || { \ 37 rm $@; false; \ 38 } 39include/autoconf.mk.dep: FORCE 40 $(call cmd,autoconf_dep) 41 42# We are migrating from board headers to Kconfig little by little. 43# In the interim, we use both of 44# - include/config/auto.conf (generated by Kconfig) 45# - include/autoconf.mk (used in the U-Boot conventional configuration) 46# The following rule creates autoconf.mk 47# include/config/auto.conf is grepped in order to avoid duplication of the 48# same CONFIG macros 49quiet_cmd_autoconf = GEN $@ 50 cmd_autoconf = \ 51 $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && { \ 52 sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp | \ 53 while read line; do \ 54 if ! grep -q "$${line%=*}=" $(obj)/config/auto.conf; then \ 55 echo "$$line"; \ 56 fi \ 57 done > $@; \ 58 rm $@.tmp; \ 59 } || { \ 60 rm $@.tmp; false; \ 61 } 62 63$(obj)/autoconf.mk: FORCE 64 $(call cmd,autoconf) 65 66include/autoconf.mk include/autoconf.mk.dep: include/config.h 67 68# include/config.h 69# Prior to Kconfig, it was generated by mkconfig. Now it is created here. 70define filechk_config_h 71 (echo "/* Automatically generated - do not edit */"; \ 72 for i in $$(echo $(CONFIG_SYS_EXTRA_OPTIONS) | sed 's/,/ /g'); do \ 73 echo \#define CONFIG_$$i \ 74 | sed '/=/ {s/=/ /;q; } ; { s/$$/ 1/; }'; \ 75 done; \ 76 echo \#define CONFIG_BOARDDIR board/$(if $(VENDOR),$(VENDOR)/)$(BOARD);\ 77 echo \#include \<config_defaults.h\>; \ 78 echo \#include \<configs/$(CONFIG_SYS_CONFIG_NAME).h\>; \ 79 echo \#include \<asm/config.h\>; \ 80 echo \#include \<config_fallbacks.h\>; \ 81 echo \#include \<config_uncmd_spl.h\>; ) 82endef 83 84include/config.h: scripts/Makefile.autoconf create_symlink FORCE 85 $(call filechk,config_h) 86 87# symbolic links 88PHONY += create_symlink 89create_symlink: 90ifneq ($(KBUILD_SRC),) 91 $(Q)mkdir -p include/asm 92endif 93 $(Q)ln -fsn $(srctree)/arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)) \ 94 $(if $(KBUILD_SRC),,arch/$(ARCH)/)include/asm/arch 95 96PHONY += FORCE 97FORCE: 98 99.PHONY: $(PHONY) 100