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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107# SPDX-License-Identifier: GPL-2.0# include/asm-generic contains a lot of files that are used# verbatim by several architectures.## This Makefile generates arch/$(SRCARCH)/include/generated/(uapi/)/asm# headers from multiple sources:# - a small wrapper to include the corresponding asm-generic/*.h# is generated for each file listed as generic-y# - uapi/asm/unistd_*.h files listed as syscalls-y are generated from# syscall.tbl with the __NR_* macros# - Corresponding asm/syscall_table_*.h are generated from the same input
PHONY := allall:
src := $(srctree)/$(subst /generated,,$(obj))
syscall_abis_32 += common,32syscall_abis_64 += common,64syscalltbl := $(srctree)/scripts/syscall.tblsyshdr-args := --emit-nr
# let architectures override $(syscall_abis_%) and $(syscalltbl)-include $(srctree)/arch/$(SRCARCH)/kernel/Makefile.syscallsinclude $(srctree)/scripts/Kbuild.include-include $(kbuild-file)
syshdr := $(srctree)/scripts/syscallhdr.shsystbl := $(srctree)/scripts/syscalltbl.sh
# $(generic)/Kbuild lists mandatory-y. Exclude um since it is a special case.ifneq ($(SRCARCH),um)include $(srctree)/$(generic)/Kbuildendif
redundant := $(filter $(mandatory-y) $(generated-y), $(generic-y))redundant += $(foreach f, $(generic-y), $(if $(wildcard $(src)/$(f)),$(f)))redundant := $(sort $(redundant))$(if $(redundant),\ $(warning redundant generic-y found in $(src)/Kbuild: $(redundant)))
# If arch does not implement mandatory headers, fallback to asm-generic ones.mandatory-y := $(filter-out $(generated-y), $(mandatory-y))generic-y += $(foreach f, $(mandatory-y), $(if $(wildcard $(src)/$(f)),,$(f)))
generic-y := $(addprefix $(obj)/, $(generic-y))syscall-y := $(addprefix $(obj)/, $(syscall-y))generated-y := $(addprefix $(obj)/, $(generated-y))
# Remove stale wrappers when the corresponding files are removed from generic-yold-headers := $(wildcard $(obj)/*.h)unwanted := $(filter-out $(generic-y) $(generated-y) $(syscall-y),$(old-headers))
quiet_cmd_wrap = WRAP $@ cmd_wrap = echo "\#include <asm-generic/$*.h>" > $@
quiet_cmd_remove = REMOVE $(unwanted) cmd_remove = rm -f $(unwanted)
quiet_cmd_syshdr = SYSHDR $@ cmd_syshdr = $(CONFIG_SHELL) $(syshdr) \ $(if $(syshdr-args-$*),$(syshdr-args-$*),$(syshdr-args)) \ $(if $(syscall_compat),--prefix "compat$*_") \ --abis $(subst $(space),$(comma),$(strip $(syscall_abis_$*))) \ $< $@
quiet_cmd_systbl = SYSTBL $@ cmd_systbl = $(CONFIG_SHELL) $(systbl) \ $(if $(systbl-args-$*),$(systbl-args-$*),$(systbl-args)) \ --abis $(subst $(space),$(comma),$(strip $(syscall_abis_$*))) \ $< $@
all: $(generic-y) $(syscall-y) $(if $(unwanted),$(call cmd,remove)) @:
$(obj)/%.h: $(srctree)/$(generic)/%.h $(call cmd,wrap)
$(obj)/unistd_%.h: $(syscalltbl) $(syshdr) FORCE $(call if_changed,syshdr)
$(obj)/unistd_compat_%.h: syscall_compat:=1$(obj)/unistd_compat_%.h: $(syscalltbl) $(syshdr) FORCE $(call if_changed,syshdr)
$(obj)/syscall_table_%.h: $(syscalltbl) $(systbl) FORCE $(call if_changed,systbl)
targets := $(syscall-y)
# Create output directory. Skip it if at least one old header exists# since we know the output directory already exists.ifeq ($(old-headers),)$(shell mkdir -p $(obj))endif
PHONY += FORCE
FORCE:
existing-targets := $(wildcard $(sort $(targets)))
-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
.PHONY: $(PHONY)