1# ==========================================================================
2# Installing headers
3#
4# header-y files will be installed verbatim
5# unifdef-y are the files where unifdef will be run before installing files
6# objhdr-y are generated files that will be installed verbatim
7#
8# ==========================================================================
9
10UNIFDEF := unifdef -U__KERNEL__
11
12# Eliminate the contents of (and inclusions of) compiler.h
13HDRSED  := sed 	-e "s/ inline / __inline__ /g" \
14		-e "s/[[:space:]]__user[[:space:]]\+/ /g" \
15		-e "s/(__user[[:space:]]\+/ (/g" \
16		-e "s/[[:space:]]__force[[:space:]]\+/ /g" \
17		-e "s/(__force[[:space:]]\+/ (/g" \
18		-e "s/[[:space:]]__iomem[[:space:]]\+/ /g" \
19		-e "s/(__iomem[[:space:]]\+/ (/g" \
20		-e "s/[[:space:]]__attribute_const__[[:space:]]\+/\ /g" \
21		-e "s/[[:space:]]__attribute_const__$$//" \
22		-e "/^\#include <linux\/compiler.h>/d"
23
24_dst := $(if $(dst),$(dst),$(obj))
25
26.PHONY: __headersinst
27__headersinst:
28
29
30ifeq (,$(patsubst include/asm/%,,$(obj)/))
31# For producing the generated stuff in include/asm for biarch builds, include
32# both sets of Kbuild files; we'll generate anything which is mentioned in
33# _either_ arch, and recurse into subdirectories which are mentioned in either
34# arch. Since some directories may exist in one but not the other, we must
35# use '-include'.
36GENASM := 1
37archasm	   := $(subst include/asm,asm-$(ARCH),$(obj))
38altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
39-include $(srctree)/include/$(archasm)/Kbuild
40-include $(srctree)/include/$(altarchasm)/Kbuild
41else
42include $(srctree)/$(obj)/Kbuild
43endif
44
45include scripts/Kbuild.include
46
47# If this is include/asm-$(ARCH) and there's no $(ALTARCH), then
48# override $(_dst) so that we install to include/asm directly.
49ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH))
50     _dst := include/asm
51endif
52
53header-y	:= $(sort $(header-y))
54unifdef-y	:= $(sort $(unifdef-y))
55subdir-y	:= $(patsubst %/,%,$(filter %/, $(header-y)))
56header-y	:= $(filter-out %/, $(header-y))
57header-y	:= $(filter-out $(unifdef-y),$(header-y))
58
59ifdef ALTARCH
60ifeq ($(obj),include/asm-$(ARCH))
61altarch-y	:= altarch-dir
62endif
63endif
64
65# Make the definitions visible for recursive make invocations
66export ALTARCH
67export ARCHDEF
68export ALTARCHDEF
69
70quiet_cmd_o_hdr_install   = INSTALL $(_dst)/$@
71      cmd_o_hdr_install   = cp $(objtree)/$(obj)/$@ $(INSTALL_HDR_PATH)/$(_dst)
72
73quiet_cmd_headers_install = INSTALL $(_dst)/$@
74      cmd_headers_install = $(HDRSED) $(srctree)/$(obj)/$@		\
75			    > $(INSTALL_HDR_PATH)/$(_dst)/$@
76
77quiet_cmd_unifdef	  = UNIFDEF $(_dst)/$@
78      cmd_unifdef	  = $(UNIFDEF) $(srctree)/$(obj)/$@ | $(HDRSED)	\
79                            > $(INSTALL_HDR_PATH)/$(_dst)/$@ || :
80
81quiet_cmd_mkdir		  = MKDIR   $@
82      cmd_mkdir		  = mkdir -p $(INSTALL_HDR_PATH)/$@
83
84quiet_cmd_gen		  = GEN     $(_dst)/$@
85      cmd_gen		  = \
86STUBDEF=__ASM_STUB_`echo $@ | tr a-z. A-Z_`;				\
87(echo "/* File autogenerated by 'make headers_install' */" ;		\
88echo "\#ifndef $$STUBDEF" ;						\
89echo "\#define $$STUBDEF" ;						\
90echo "\# if $(ARCHDEF)" ;						\
91if [ -r $(srctree)/include/$(archasm)/$@ ]; then			\
92	echo "\#  include <$(archasm)/$@>" ;				\
93else									\
94	echo "\#  error $(archasm)/$@ does not exist in"		\
95			"the $(ARCH) architecture" ;			\
96fi ;									\
97echo "\# elif $(ALTARCHDEF)" ;						\
98if [ -r $(srctree)/include/$(altarchasm)/$@ ]; then			\
99	echo "\#  include <$(altarchasm)/$@>" ;				\
100else									\
101	echo "\#  error $(altarchasm)/$@ does not exist in"		\
102			"the $(ALTARCH) architecture" ;			\
103fi ;									\
104echo "\# else" ;							\
105echo "\#  warning This machine appears to be"				\
106		 "neither $(ARCH) nor $(ALTARCH)." ;			\
107echo "\# endif" ;							\
108echo "\#endif /* $$STUBDEF */" ;					\
109) > $(INSTALL_HDR_PATH)/$(_dst)/$@
110
111__headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y)
112
113.PHONY: $(header-y) $(unifdef-y) $(subdir-y)
114
115# Rules for installing headers
116
117$(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): $(_dst)
118
119.PHONY: $(_dst)
120$(_dst):
121	$(call cmd,mkdir)
122
123ifdef GENASM
124$(objhdr-y) $(header-y) $(unifdef-y):
125	$(call cmd,gen)
126
127else
128$(objhdr-y):
129	$(call cmd,o_hdr_install)
130
131$(header-y):
132	$(call cmd,headers_install)
133
134$(unifdef-y):
135	$(call cmd,unifdef)
136endif
137
138hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
139
140.PHONY: altarch-dir
141altarch-dir:
142	$(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)
143	$(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm
144
145# Recursion
146$(subdir-y):
147	$(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel)
148