1 # 2 # Kbuild for top-level directory of U-Boot 3 # This file takes care of the following: 4 # 1) Generate generic-asm-offsets.h 5 # 2) Generate asm-offsets.h 6 7 # Default sed regexp - multiline due to syntax constraints 8 define sed-y 9 "s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \ 10 /^->/{s:->#\(.*\):/* \1 */:; \ 11 s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \ 12 s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ 13 s:->::; p;}" 14 endef 15 16 # Use filechk to avoid rebuilds when a header changes, but the resulting file 17 # does not 18 define filechk_offsets 19 (set -e; \ 20 echo "#ifndef $2"; \ 21 echo "#define $2"; \ 22 echo "/*"; \ 23 echo " * DO NOT MODIFY."; \ 24 echo " *"; \ 25 echo " * This file was generated by Kbuild"; \ 26 echo " */"; \ 27 echo ""; \ 28 sed -ne $(sed-y); \ 29 echo ""; \ 30 echo "#endif" ) 31 endef 32 33 ##### 34 # 1) Generate generic-asm-offsets.h 35 36 generic-offsets-file := include/generated/generic-asm-offsets.h 37 38 always := $(generic-offsets-file) 39 targets := lib/asm-offsets.s 40 41 # We use internal kbuild rules to avoid the "is up to date" message from make 42 lib/asm-offsets.s: lib/asm-offsets.c FORCE 43 $(Q)mkdir -p $(dir $@) 44 $(call if_changed_dep,cc_s_c) 45 46 $(obj)/$(generic-offsets-file): lib/asm-offsets.s FORCE 47 $(call filechk,offsets,__GENERIC_ASM_OFFSETS_H__) 48 49 ##### 50 # 2) Generate asm-offsets.h 51 # 52 53 ifneq ($(wildcard $(srctree)/arch/$(ARCH)/lib/asm-offsets.c),) 54 offsets-file := include/generated/asm-offsets.h 55 endif 56 57 always += $(offsets-file) 58 targets += arch/$(ARCH)/lib/asm-offsets.s 59 60 CFLAGS_asm-offsets.o := -DDO_DEPS_ONLY 61 62 # We use internal kbuild rules to avoid the "is up to date" message from make 63 arch/$(ARCH)/lib/asm-offsets.s: arch/$(ARCH)/lib/asm-offsets.c FORCE 64 $(Q)mkdir -p $(dir $@) 65 $(call if_changed_dep,cc_s_c) 66 67 $(obj)/$(offsets-file): arch/$(ARCH)/lib/asm-offsets.s FORCE 68 $(call filechk,offsets,__ASM_OFFSETS_H__) 69
