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Move environment files from common/ to env/
[people/ms/u-boot.git] / Kbuild
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__)