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 := scripts/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
26ifeq (,$(patsubst include/asm/%,,$(obj)/))
27# For producing the generated stuff in include/asm for biarch builds, include
28# both sets of Kbuild files; we'll generate anything which is mentioned in
29# _either_ arch, and recurse into subdirectories which are mentioned in either
30# arch. Since some directories may exist in one but not the other, we must
31# use $(wildcard...).
32GENASM := 1
33archasm	   := $(subst include/asm,asm-$(ARCH),$(obj))
34altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
35KBUILDFILES := $(wildcard $(srctree)/include/$(archasm)/Kbuild $(srctree)/include/$(altarchasm)/Kbuild)
36else
37KBUILDFILES := $(srctree)/$(obj)/Kbuild
38endif
39
40include $(KBUILDFILES)
41
42include scripts/Kbuild.include
43
44# If this is include/asm-$(ARCH) and there's no $(ALTARCH), then
45# override $(_dst) so that we install to include/asm directly.
46# Unless $(BIASMDIR) is set, in which case we're probably doing
47# a 'headers_install_all' build and we should keep the -$(ARCH)
48# in the directory name.
49ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH)$(BIASMDIR))
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
59# stamp files for header checks
60check-y		:= $(patsubst %,.check.%,$(header-y) $(unifdef-y) $(objhdr-y))
61
62# Work out what needs to be removed
63oldheaders	:= $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/*.h))
64unwanted	:= $(filter-out $(header-y) $(unifdef-y) $(objhdr-y),$(oldheaders))
65
66oldcheckstamps	:= $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/.check.*.h))
67unwanted	+= $(filter-out $(check-y),$(oldcheckstamps))
68
69# Prefix them all with full paths to $(INSTALL_HDR_PATH)
70header-y 	:= $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(header-y))
71unifdef-y 	:= $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(unifdef-y))
72objhdr-y 	:= $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(objhdr-y))
73check-y 	:= $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(check-y))
74
75
76ifdef ALTARCH
77ifeq ($(obj),include/asm-$(ARCH))
78altarch-y	:= altarch-dir
79endif
80endif
81
82# Make the definitions visible for recursive make invocations
83export ALTARCH
84export ARCHDEF
85export ALTARCHDEF
86
87quiet_cmd_o_hdr_install   = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
88      cmd_o_hdr_install   = cp $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(objtree)/$(obj)/%,$@) \
89			    $(INSTALL_HDR_PATH)/$(_dst)
90
91quiet_cmd_headers_install = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
92      cmd_headers_install = $(HDRSED) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@)	\
93			    > $@
94
95quiet_cmd_unifdef	  = UNIFDEF $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
96      cmd_unifdef	  = $(UNIFDEF) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@) \
97				   | $(HDRSED) > $@ || :
98
99quiet_cmd_check		  = CHECK   $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/.check.%,$(_dst)/%,$@)
100      cmd_check		  = $(CONFIG_SHELL) $(srctree)/scripts/hdrcheck.sh \
101                              $(INSTALL_HDR_PATH)/include $(subst /.check.,/,$@) $@
102
103quiet_cmd_remove	  = REMOVE  $(_dst)/$@
104      cmd_remove	  = rm -f $(INSTALL_HDR_PATH)/$(_dst)/$@
105
106quiet_cmd_mkdir		  = MKDIR   $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
107      cmd_mkdir		  = mkdir -p $@
108
109quiet_cmd_gen		  = GEN     $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
110      cmd_gen		  = \
111FNAME=$(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$@);			\
112STUBDEF=__ASM_STUB_`echo $$FNAME | tr a-z.- A-Z__`;			\
113(echo "/* File autogenerated by 'make headers_install' */" ;		\
114echo "\#ifndef $$STUBDEF" ;						\
115echo "\#define $$STUBDEF" ;						\
116echo "\# if $(ARCHDEF)" ;						\
117if [ -r $(subst /$(_dst)/,/include/$(archasm)/,$@) ]; then		\
118	echo "\#  include <$(archasm)/$$FNAME>" ;			\
119else									\
120	echo "\#  error $(archasm)/$$FNAME does not exist in"		\
121			"the $(ARCH) architecture" ;			\
122fi ;									\
123echo "\# elif $(ALTARCHDEF)" ;						\
124if [ -r $(subst /$(_dst)/,/include/$(altarchasm)/,$@) ]; then		\
125	echo "\#  include <$(altarchasm)/$$FNAME>" ;			\
126else									\
127	echo "\#  error $(altarchasm)/$$FNAME does not exist in"	\
128			"the $(ALTARCH) architecture" ;			\
129fi ;									\
130echo "\# else" ;							\
131echo "\#  warning This machine appears to be"				\
132		 "neither $(ARCH) nor $(ALTARCH)." ;			\
133echo "\# endif" ;							\
134echo "\#endif /* $$STUBDEF */" ;					\
135) > $@
136
137.PHONY: __headersinst __headerscheck
138
139ifdef HDRCHECK
140__headerscheck: $(subdir-y) $(check-y)
141	@true
142
143$(check-y) : $(INSTALL_HDR_PATH)/$(_dst)/.check.%.h : $(INSTALL_HDR_PATH)/$(_dst)/%.h
144	$(call cmd,check)
145
146# Other dependencies for $(check-y)
147include /dev/null $(wildcard $(check-y))
148
149# ... but leave $(check-y) as .PHONY for now until those deps are actually correct.
150.PHONY: $(check-y)
151
152else
153# Rules for installing headers
154__headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y)
155	@true
156
157$(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): | $(INSTALL_HDR_PATH)/$(_dst) $(unwanted)
158
159$(INSTALL_HDR_PATH)/$(_dst):
160	$(call cmd,mkdir)
161
162.PHONY: $(unwanted)
163$(unwanted):
164	$(call cmd,remove)
165
166ifdef GENASM
167$(objhdr-y) $(header-y) $(unifdef-y): $(KBUILDFILES)
168	$(call cmd,gen)
169
170else
171$(objhdr-y) :		$(INSTALL_HDR_PATH)/$(_dst)/%.h: $(objtree)/$(obj)/%.h $(KBUILDFILES)
172	$(call cmd,o_hdr_install)
173
174$(header-y) :		$(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
175	$(call cmd,headers_install)
176
177$(unifdef-y) :		$(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
178	$(call cmd,unifdef)
179endif
180endif
181
182hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
183
184.PHONY: altarch-dir
185# All the files in the normal arch dir must be created first, since we test
186# for their existence.
187altarch-dir: $(subdir-y) $(header-y) $(unifdef-y) $(objhdr-y)
188	$(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)
189	$(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm$(BIASMDIR)
190
191# Recursion
192.PHONY: $(subdir-y)
193$(subdir-y):
194	$(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel)
195