blob: 1165d7a5ca4a9d04886dbdad604f6e57bded974b [file] [log] [blame]
Sam Ravnborg86feeaa2005-09-09 19:28:28 +02001#
2# Kbuild for top-level directory of the kernel
3# This file takes care of the following:
Christoph Lameter1cdf25d2008-04-28 02:12:44 -07004# 1) Generate bounds.h
5# 2) Generate asm-offsets.h (may need bounds.h)
6# 3) Check for missing system calls
Sam Ravnborg86feeaa2005-09-09 19:28:28 +02007
8#####
Christoph Lameter1cdf25d2008-04-28 02:12:44 -07009# 1) Generate bounds.h
10
Sam Ravnborg01fc0ac2009-04-19 21:57:19 +020011bounds-file := include/generated/bounds.h
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070012
13always := $(bounds-file)
14targets := $(bounds-file) kernel/bounds.s
15
16quiet_cmd_bounds = GEN $@
17define cmd_bounds
18 (set -e; \
19 echo "#ifndef __LINUX_BOUNDS_H__"; \
20 echo "#define __LINUX_BOUNDS_H__"; \
21 echo "/*"; \
22 echo " * DO NOT MODIFY."; \
23 echo " *"; \
24 echo " * This file was generated by Kbuild"; \
25 echo " *"; \
26 echo " */"; \
27 echo ""; \
28 sed -ne $(sed-y) $<; \
29 echo ""; \
30 echo "#endif" ) > $@
31endef
32
33# We use internal kbuild rules to avoid the "is up to date" message from make
34kernel/bounds.s: kernel/bounds.c FORCE
35 $(Q)mkdir -p $(dir $@)
36 $(call if_changed_dep,cc_s_c)
37
38$(obj)/$(bounds-file): kernel/bounds.s Kbuild
39 $(Q)mkdir -p $(dir $@)
40 $(call cmd,bounds)
41
42#####
43# 2) Generate asm-offsets.h
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020044#
45
Sam Ravnborg2e57d052008-06-22 21:42:06 +020046offsets-file := include/asm/asm-offsets.h
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020047
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070048always += $(offsets-file)
49targets += $(offsets-file)
Thomas Gleixner6752ed92007-10-11 11:11:36 +020050targets += arch/$(SRCARCH)/kernel/asm-offsets.s
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070051
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020052
Sam Ravnborg048eb582005-09-09 22:32:31 +020053# Default sed regexp - multiline due to syntax constraints
54define sed-y
Christoph Lameterbf2ae2b2008-04-28 02:12:45 -070055 "/^->/{s:->#\(.*\):/* \1 */:; \
56 s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
57 s:->::; p;}"
Sam Ravnborg048eb582005-09-09 22:32:31 +020058endef
Sam Ravnborg048eb582005-09-09 22:32:31 +020059
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020060quiet_cmd_offsets = GEN $@
61define cmd_offsets
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020062 (set -e; \
63 echo "#ifndef __ASM_OFFSETS_H__"; \
64 echo "#define __ASM_OFFSETS_H__"; \
65 echo "/*"; \
66 echo " * DO NOT MODIFY."; \
67 echo " *"; \
Olaf Hering65ff22e2006-07-25 18:42:26 -070068 echo " * This file was generated by Kbuild"; \
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020069 echo " *"; \
70 echo " */"; \
71 echo ""; \
Brian Gerstac448af2006-01-06 18:28:45 -050072 sed -ne $(sed-y) $<; \
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020073 echo ""; \
74 echo "#endif" ) > $@
75endef
76
77# We use internal kbuild rules to avoid the "is up to date" message from make
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070078arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
79 $(obj)/$(bounds-file) FORCE
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020080 $(Q)mkdir -p $(dir $@)
81 $(call if_changed_dep,cc_s_c)
82
Thomas Gleixner6752ed92007-10-11 11:11:36 +020083$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020084 $(call cmd,offsets)
85
Sam Ravnborgc53aeca2007-03-27 22:50:29 +020086#####
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070087# 3) Check for missing system calls
Sam Ravnborgc53aeca2007-03-27 22:50:29 +020088#
89
90quiet_cmd_syscalls = CALL $<
91 cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags)
92
93PHONY += missing-syscalls
94missing-syscalls: scripts/checksyscalls.sh FORCE
95 $(call cmd,syscalls)
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070096
97# Delete all targets during make clean
Jan Blunck7d3cc8b2008-05-16 13:54:59 +020098clean-files := $(addprefix $(objtree)/,$(filter-out $(bounds-file) $(offsets-file),$(targets)))