Kbuild 2.2 KB

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