xref: /openbmc/u-boot/Kbuild (revision b1420c81) 
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#####
8# 1) Generate generic-asm-offsets.h
9
10generic-offsets-file := include/generated/generic-asm-offsets.h
11
12always  := $(generic-offsets-file)
13targets := $(generic-offsets-file) lib/asm-offsets.s
14
15quiet_cmd_generic-offsets = GEN     $@
16define cmd_generic-offsets
17	(set -e; \
18	 echo "#ifndef __GENERIC_ASM_OFFSETS_H__"; \
19	 echo "#define __GENERIC_ASM_OFFSETS_H__"; \
20	 echo "/*"; \
21	 echo " * DO NOT MODIFY."; \
22	 echo " *"; \
23	 echo " * This file was generated by Kbuild"; \
24	 echo " *"; \
25	 echo " */"; \
26	 echo ""; \
27	 sed -ne $(sed-y) $<; \
28	 echo ""; \
29	 echo "#endif" ) > $@
30endef
31
32# We use internal kbuild rules to avoid the "is up to date" message from make
33lib/asm-offsets.s: lib/asm-offsets.c FORCE
34	$(Q)mkdir -p $(dir $@)
35	$(call if_changed_dep,cc_s_c)
36
37$(obj)/$(generic-offsets-file): lib/asm-offsets.s Kbuild
38	$(Q)mkdir -p $(dir $@)
39	$(call cmd,generic-offsets)
40
41#####
42# 2) Generate asm-offsets.h
43#
44
45ifneq ($(wildcard $(srctree)/arch/$(ARCH)/lib/asm-offsets.c),)
46offsets-file := include/generated/asm-offsets.h
47endif
48
49always  += $(offsets-file)
50targets += $(offsets-file)
51targets += arch/$(ARCH)/lib/asm-offsets.s
52
53
54# Default sed regexp - multiline due to syntax constraints
55define sed-y
56	"s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
57	/^->/{s:->#\(.*\):/* \1 */:; \
58	s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
59	s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
60	s:->::; p;}"
61endef
62
63CFLAGS_asm-offsets.o := -DDO_DEPS_ONLY
64
65quiet_cmd_offsets = GEN     $@
66define cmd_offsets
67	(set -e; \
68	 echo "#ifndef __ASM_OFFSETS_H__"; \
69	 echo "#define __ASM_OFFSETS_H__"; \
70	 echo "/*"; \
71	 echo " * DO NOT MODIFY."; \
72	 echo " *"; \
73	 echo " * This file was generated by Kbuild"; \
74	 echo " *"; \
75	 echo " */"; \
76	 echo ""; \
77	 sed -ne $(sed-y) $<; \
78	 echo ""; \
79	 echo "#endif" ) > $@
80endef
81
82# We use internal kbuild rules to avoid the "is up to date" message from make
83arch/$(ARCH)/lib/asm-offsets.s: arch/$(ARCH)/lib/asm-offsets.c FORCE
84	$(Q)mkdir -p $(dir $@)
85	$(call if_changed_dep,cc_s_c)
86
87$(obj)/$(offsets-file): arch/$(ARCH)/lib/asm-offsets.s Kbuild
88	$(call cmd,offsets)
89