Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[platform/kernel/linux-rpi.git] / scripts / Makefile.asm-generic
1 # SPDX-License-Identifier: GPL-2.0
2 # include/asm-generic contains a lot of files that are used
3 # verbatim by several architectures.
4 #
5 # This Makefile reads the file arch/$(SRCARCH)/include/$(src)/Kbuild
6 # and for each file listed in this file with generic-y creates
7 # a small wrapper file in $(obj) (arch/$(SRCARCH)/include/generated/$(src))
8
9 PHONY := all
10 all:
11
12 kbuild-file := $(srctree)/arch/$(SRCARCH)/include/$(src)/Kbuild
13 -include $(kbuild-file)
14
15 include scripts/Kbuild.include
16
17 # Create output directory if not already present
18 _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
19
20 # Stale wrappers when the corresponding files are removed from generic-y
21 # need removing.
22 generated-y   := $(generic-y) $(generated-y)
23 all-files     := $(patsubst %, $(obj)/%, $(generated-y))
24 old-headers   := $(wildcard $(obj)/*.h)
25 unwanted      := $(filter-out $(all-files),$(old-headers))
26
27 quiet_cmd_wrap = WRAP    $@
28 cmd_wrap = echo "\#include <asm-generic/$*.h>" >$@
29
30 quiet_cmd_remove = REMOVE  $(unwanted)
31 cmd_remove = rm -f $(unwanted)
32
33 all: $(patsubst %, $(obj)/%, $(generic-y)) FORCE
34         $(if $(unwanted),$(call cmd,remove),)
35         @:
36
37 $(obj)/%.h:
38         $(call cmd,wrap)
39
40 PHONY += FORCE
41 .PHONY: $(PHONY)
42 FORCE: ;