kbuild: always unifdef files in headers_install*
[linux-2.6.git] / scripts / Makefile.headersinst
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
10 UNIFDEF := scripts/unifdef -U__KERNEL__
11
12 # Eliminate the contents of (and inclusions of) compiler.h
13 HDRSED  := sed  -e "s/ inline / __inline__ /g" \
14                 -e "s/[[:space:]]__user[[:space:]]\{1,\}/ /g" \
15                 -e "s/(__user[[:space:]]\{1,\}/ (/g" \
16                 -e "s/[[:space:]]__force[[:space:]]\{1,\}/ /g" \
17                 -e "s/(__force[[:space:]]\{1,\}/ (/g" \
18                 -e "s/[[:space:]]__iomem[[:space:]]\{1,\}/ /g" \
19                 -e "s/(__iomem[[:space:]]\{1,\}/ (/g" \
20                 -e "s/[[:space:]]__attribute_const__[[:space:]]\{1,\}/\ /g" \
21                 -e "s/[[:space:]]__attribute_const__$$//" \
22                 -e "/^\#include <linux\/compiler.h>/d"
23
24 _dst := $(if $(dst),$(dst),$(obj))
25
26 ifeq (,$(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...). 
32 GENASM := 1
33 archasm    := $(subst include/asm,asm-$(ARCH),$(obj))
34 altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
35 KBUILDFILES := $(wildcard $(srctree)/include/$(archasm)/Kbuild $(srctree)/include/$(altarchasm)/Kbuild)
36 else
37 KBUILDFILES := $(srctree)/$(obj)/Kbuild
38 endif
39
40 include $(KBUILDFILES)
41
42 include 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.
49 ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH)$(BIASMDIR))
50      _dst := include/asm
51 endif
52
53 header-y        := $(sort $(header-y) $(unifdef-y))
54 subdir-y        := $(patsubst %/,%,$(filter %/, $(header-y)))
55 header-y        := $(filter-out %/, $(header-y))
56
57 # stamp files for header checks
58 check-y         := $(patsubst %,.check.%,$(header-y) $(objhdr-y))
59
60 # Work out what needs to be removed
61 oldheaders      := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/*.h))
62 unwanted        := $(filter-out $(header-y) $(objhdr-y),$(oldheaders))
63
64 oldcheckstamps  := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/.check.*.h))
65 unwanted        += $(filter-out $(check-y),$(oldcheckstamps))
66
67 # Prefix them all with full paths to $(INSTALL_HDR_PATH)
68 header-y        := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(header-y))
69 objhdr-y        := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(objhdr-y))
70 check-y         := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(check-y))
71
72
73 ifdef ALTARCH
74 ifeq ($(obj),include/asm-$(ARCH))
75 altarch-y       := altarch-dir
76 endif
77 endif
78
79 # Make the definitions visible for recursive make invocations
80 export ALTARCH
81 export ARCHDEF
82 export ALTARCHDEF
83
84 quiet_cmd_o_hdr_install   = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
85       cmd_o_hdr_install   = cp $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(objtree)/$(obj)/%,$@) \
86                             $(INSTALL_HDR_PATH)/$(_dst)
87
88 quiet_cmd_unifdef         = UNIFDEF $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
89       cmd_unifdef         = $(UNIFDEF) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@) \
90                                    | $(HDRSED) > $@ || :
91
92 quiet_cmd_check           = CHECK   $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/.check.%,$(_dst)/%,$@)
93       cmd_check           = $(CONFIG_SHELL) $(srctree)/scripts/hdrcheck.sh \
94                               $(INSTALL_HDR_PATH)/include $(subst /.check.,/,$@) $@
95
96 quiet_cmd_remove          = REMOVE  $(_dst)/$@
97       cmd_remove          = rm -f $(INSTALL_HDR_PATH)/$(_dst)/$@
98
99 quiet_cmd_mkdir           = MKDIR   $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
100       cmd_mkdir           = mkdir -p $@
101
102 quiet_cmd_gen             = GEN     $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
103       cmd_gen             = \
104 FNAME=$(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$@);                   \
105 STUBDEF=__ASM_STUB_`echo $$FNAME | tr a-z.- A-Z__`;                     \
106 (echo "/* File autogenerated by 'make headers_install' */" ;            \
107 echo "\#ifndef $$STUBDEF" ;                                             \
108 echo "\#define $$STUBDEF" ;                                             \
109 echo "\# if $(ARCHDEF)" ;                                               \
110 if [ -r $(subst /$(_dst)/,/include/$(archasm)/,$@) ]; then              \
111         echo "\#  include <$(archasm)/$$FNAME>" ;                       \
112 else                                                                    \
113         echo "\#  error $(archasm)/$$FNAME does not exist in"           \
114                         "the $(ARCH) architecture" ;                    \
115 fi ;                                                                    \
116 echo "\# elif $(ALTARCHDEF)" ;                                          \
117 if [ -r $(subst /$(_dst)/,/include/$(altarchasm)/,$@) ]; then           \
118         echo "\#  include <$(altarchasm)/$$FNAME>" ;                    \
119 else                                                                    \
120         echo "\#  error $(altarchasm)/$$FNAME does not exist in"        \
121                         "the $(ALTARCH) architecture" ;                 \
122 fi ;                                                                    \
123 echo "\# else" ;                                                        \
124 echo "\#  warning This machine appears to be"                           \
125                  "neither $(ARCH) nor $(ALTARCH)." ;                    \
126 echo "\# endif" ;                                                       \
127 echo "\#endif /* $$STUBDEF */" ;                                        \
128 ) > $@
129
130 .PHONY: __headersinst __headerscheck
131
132 ifdef HDRCHECK
133 __headerscheck: $(subdir-y) $(check-y)
134         @true
135
136 $(check-y) : $(INSTALL_HDR_PATH)/$(_dst)/.check.%.h : $(INSTALL_HDR_PATH)/$(_dst)/%.h 
137         $(call cmd,check)
138
139 # Other dependencies for $(check-y)
140 include /dev/null $(wildcard $(check-y))
141
142 # ... but leave $(check-y) as .PHONY for now until those deps are actually correct.
143 .PHONY: $(check-y)
144
145 else
146 # Rules for installing headers
147 __headersinst: $(subdir-y) $(header-y) $(altarch-y) $(objhdr-y)
148         @true
149
150 $(objhdr-y) $(subdir-y) $(header-y): | $(INSTALL_HDR_PATH)/$(_dst) $(unwanted)
151
152 $(INSTALL_HDR_PATH)/$(_dst):
153         $(call cmd,mkdir)
154
155 .PHONY: $(unwanted)
156 $(unwanted):
157         $(call cmd,remove)
158
159 ifdef GENASM
160 $(objhdr-y) $(header-y): $(KBUILDFILES)
161         $(call cmd,gen)
162
163 else
164 $(objhdr-y): $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(objtree)/$(obj)/%.h $(KBUILDFILES)
165         $(call cmd,o_hdr_install)
166
167 $(header-y): $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
168         $(call cmd,unifdef)
169
170 endif
171 endif
172
173 hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
174
175 .PHONY: altarch-dir
176 # All the files in the normal arch dir must be created first, since we test
177 # for their existence.
178 altarch-dir: $(subdir-y) $(header-y) $(objhdr-y)
179         $(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)
180         $(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm$(BIASMDIR)
181
182 # Recursion
183 .PHONY: $(subdir-y)
184 $(subdir-y):
185         $(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel)