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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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182c02a6cd
The filechk macro always executes the syscalltbl script (and discards the output if there are no changes). Using if_changed is more efficient because it avoids running the script when the target is up-to-date and the command remains unchanged. All other architectures use if_changed for generating syscall headers. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Link: https://lore.kernel.org/r/20241111134603.2063226-3-masahiroy@kernel.org Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
49 lines
1.3 KiB
Makefile
49 lines
1.3 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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gen := arch/$(ARCH)/include/generated
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kapi := $(gen)/asm
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uapi := $(gen)/uapi/asm
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syscall := $(src)/syscall.tbl
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systbl := $(src)/syscalltbl
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gen-y := $(kapi)/syscall_table.h
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kapi-hdrs-y := $(kapi)/unistd_nr.h
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uapi-hdrs-y := $(uapi)/unistd_32.h
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uapi-hdrs-y += $(uapi)/unistd_64.h
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targets += $(addprefix ../../../../,$(gen-y) $(kapi-hdrs-y) $(uapi-hdrs-y))
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PHONY += kapi uapi
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kapi: $(gen-y) $(kapi-hdrs-y)
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uapi: $(uapi-hdrs-y)
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# Create output directory if not already present
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$(shell mkdir -p $(uapi) $(kapi))
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quiet_cmd_syshdr = SYSHDR $@
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cmd_syshdr = $(CONFIG_SHELL) '$(systbl)' -H -a $(syshdr_abi_$(basetarget)) -f "$@" < $< > $@
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quiet_cmd_sysnr = SYSNR $@
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cmd_sysnr = $(CONFIG_SHELL) '$(systbl)' -N -a $(sysnr_abi_$(basetarget)) < $< > $@
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quiet_cmd_syscalls = SYSTBL $@
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cmd_syscalls = $(CONFIG_SHELL) '$(systbl)' -S < $< > $@
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syshdr_abi_unistd_32 := common,32
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$(uapi)/unistd_32.h: $(syscall) $(systbl) FORCE
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$(call if_changed,syshdr)
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syshdr_abi_unistd_64 := common,64
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$(uapi)/unistd_64.h: $(syscall) $(systbl) FORCE
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$(call if_changed,syshdr)
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$(kapi)/syscall_table.h: $(syscall) $(systbl) FORCE
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$(call if_changed,syscalls)
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sysnr_abi_unistd_nr := common,32,64
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$(kapi)/unistd_nr.h: $(syscall) $(systbl) FORCE
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$(call if_changed,sysnr)
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