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ocfs2: Add support for cross extent block
[mirror_ubuntu-bionic-kernel.git] / Kbuild
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1#
2# Kbuild for top-level directory of the kernel
3# This file takes care of the following:
4# 1) Generate asm-offsets.h
c53aeca0 5# 2) Check for missing system calls
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6
7#####
8d36a623 8# 1) Generate asm-offsets.h
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9#
10
96a388de 11offsets-file := include/asm-$(SRCARCH)/asm-offsets.h
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12
13always := $(offsets-file)
14targets := $(offsets-file)
6752ed90 15targets += arch/$(SRCARCH)/kernel/asm-offsets.s
f241182b 16clean-files := $(addprefix $(objtree)/,$(targets))
86feeaa8 17
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18# Default sed regexp - multiline due to syntax constraints
19define sed-y
20 "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"
21endef
22# Override default regexp for specific architectures
0947640f 23sed-$(CONFIG_MIPS) := "/^@@@/{s/^@@@//; s/ \#.*\$$//; p;}"
048eb582 24
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25quiet_cmd_offsets = GEN $@
26define cmd_offsets
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27 (set -e; \
28 echo "#ifndef __ASM_OFFSETS_H__"; \
29 echo "#define __ASM_OFFSETS_H__"; \
30 echo "/*"; \
31 echo " * DO NOT MODIFY."; \
32 echo " *"; \
65ff22ee 33 echo " * This file was generated by Kbuild"; \
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34 echo " *"; \
35 echo " */"; \
36 echo ""; \
ac448afb 37 sed -ne $(sed-y) $<; \
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38 echo ""; \
39 echo "#endif" ) > $@
40endef
41
42# We use internal kbuild rules to avoid the "is up to date" message from make
6752ed90 43arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c FORCE
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44 $(Q)mkdir -p $(dir $@)
45 $(call if_changed_dep,cc_s_c)
46
6752ed90 47$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild
ac448afb 48 $(Q)mkdir -p $(dir $@)
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49 $(call cmd,offsets)
50
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51#####
52# 2) Check for missing system calls
53#
54
55quiet_cmd_syscalls = CALL $<
56 cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags)
57
58PHONY += missing-syscalls
59missing-syscalls: scripts/checksyscalls.sh FORCE
60 $(call cmd,syscalls)