8a58e1628c
$(always) is added to targets by scripts/Makefile.build. Moreover, filechk does not need .*.cmd files. Adding these two files to targets is redundant. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
82 lines
2.1 KiB
Makefile
82 lines
2.1 KiB
Makefile
#
|
|
# Kbuild for top-level directory of the kernel
|
|
# This file takes care of the following:
|
|
# 1) Generate bounds.h
|
|
# 2) Generate asm-offsets.h (may need bounds.h)
|
|
# 3) Check for missing system calls
|
|
|
|
# Default sed regexp - multiline due to syntax constraints
|
|
define sed-y
|
|
"/^->/{s:->#\(.*\):/* \1 */:; \
|
|
s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
|
|
s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
|
|
s:->::; p;}"
|
|
endef
|
|
|
|
# Use filechk to avoid rebuilds when a header changes, but the resulting file
|
|
# does not
|
|
define filechk_offsets
|
|
(set -e; \
|
|
echo "#ifndef $2"; \
|
|
echo "#define $2"; \
|
|
echo "/*"; \
|
|
echo " * DO NOT MODIFY."; \
|
|
echo " *"; \
|
|
echo " * This file was generated by Kbuild"; \
|
|
echo " */"; \
|
|
echo ""; \
|
|
sed -ne $(sed-y); \
|
|
echo ""; \
|
|
echo "#endif" )
|
|
endef
|
|
|
|
#####
|
|
# 1) Generate bounds.h
|
|
|
|
bounds-file := include/generated/bounds.h
|
|
|
|
always := $(bounds-file)
|
|
targets := kernel/bounds.s
|
|
|
|
# We use internal kbuild rules to avoid the "is up to date" message from make
|
|
kernel/bounds.s: kernel/bounds.c FORCE
|
|
$(Q)mkdir -p $(dir $@)
|
|
$(call if_changed_dep,cc_s_c)
|
|
|
|
$(obj)/$(bounds-file): kernel/bounds.s FORCE
|
|
$(call filechk,offsets,__LINUX_BOUNDS_H__)
|
|
|
|
#####
|
|
# 2) Generate asm-offsets.h
|
|
#
|
|
|
|
offsets-file := include/generated/asm-offsets.h
|
|
|
|
always += $(offsets-file)
|
|
targets += arch/$(SRCARCH)/kernel/asm-offsets.s
|
|
|
|
# We use internal kbuild rules to avoid the "is up to date" message from make
|
|
arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
|
|
$(obj)/$(bounds-file) FORCE
|
|
$(Q)mkdir -p $(dir $@)
|
|
$(call if_changed_dep,cc_s_c)
|
|
|
|
$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE
|
|
$(call filechk,offsets,__ASM_OFFSETS_H__)
|
|
|
|
#####
|
|
# 3) Check for missing system calls
|
|
#
|
|
|
|
always += missing-syscalls
|
|
targets += missing-syscalls
|
|
|
|
quiet_cmd_syscalls = CALL $<
|
|
cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags)
|
|
|
|
missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE
|
|
$(call cmd,syscalls)
|
|
|
|
# Keep these two files during make clean
|
|
no-clean-files := $(bounds-file) $(offsets-file)
|