]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - Kbuild
Merge branch 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied...
[mirror_ubuntu-artful-kernel.git] / Kbuild
1 #
2 # Kbuild for top-level directory of the kernel
3 # This file takes care of the following:
4 # 1) Generate asm-offsets.h
5 # 2) Check for missing system calls
6
7 #####
8 # 1) Generate asm-offsets.h
9 #
10
11 offsets-file := include/asm-$(ARCH)/asm-offsets.h
12
13 always := $(offsets-file)
14 targets := $(offsets-file)
15 targets += arch/$(ARCH)/kernel/asm-offsets.s
16
17 # Default sed regexp - multiline due to syntax constraints
18 define sed-y
19 "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"
20 endef
21 # Override default regexp for specific architectures
22 sed-$(CONFIG_MIPS) := "/^@@@/{s/^@@@//; s/ \#.*\$$//; p;}"
23
24 quiet_cmd_offsets = GEN $@
25 define cmd_offsets
26 (set -e; \
27 echo "#ifndef __ASM_OFFSETS_H__"; \
28 echo "#define __ASM_OFFSETS_H__"; \
29 echo "/*"; \
30 echo " * DO NOT MODIFY."; \
31 echo " *"; \
32 echo " * This file was generated by Kbuild"; \
33 echo " *"; \
34 echo " */"; \
35 echo ""; \
36 sed -ne $(sed-y) $<; \
37 echo ""; \
38 echo "#endif" ) > $@
39 endef
40
41 # We use internal kbuild rules to avoid the "is up to date" message from make
42 arch/$(ARCH)/kernel/asm-offsets.s: arch/$(ARCH)/kernel/asm-offsets.c FORCE
43 $(Q)mkdir -p $(dir $@)
44 $(call if_changed_dep,cc_s_c)
45
46 $(obj)/$(offsets-file): arch/$(ARCH)/kernel/asm-offsets.s Kbuild
47 $(Q)mkdir -p $(dir $@)
48 $(call cmd,offsets)
49
50 #####
51 # 2) Check for missing system calls
52 #
53
54 quiet_cmd_syscalls = CALL $<
55 cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags)
56
57 PHONY += missing-syscalls
58 missing-syscalls: scripts/checksyscalls.sh FORCE
59 $(call cmd,syscalls)