Basic implementation of 'make 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 := 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:]]\+/ /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
30 ifeq (,$(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'.
36 GENASM := 1
37 archasm    := $(subst include/asm,asm-$(ARCH),$(obj))
38 altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
39 -include $(srctree)/include/$(archasm)/Kbuild
40 -include $(srctree)/include/$(altarchasm)/Kbuild
41 else
42 include $(srctree)/$(obj)/Kbuild
43 endif
44
45 include 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.
49 ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH))
50      _dst := include/asm
51 endif
52
53 header-y        := $(sort $(header-y))
54 unifdef-y       := $(sort $(unifdef-y))
55 subdir-y        := $(patsubst %/,%,$(filter %/, $(header-y)))
56 header-y        := $(filter-out %/, $(header-y))
57 header-y        := $(filter-out $(unifdef-y),$(header-y))
58
59 ifdef ALTARCH
60 ifeq ($(obj),include/asm-$(ARCH))
61 altarch-y       := altarch-dir
62 endif
63 endif
64
65 # Make the definitions visible for recursive make invocations
66 export ALTARCH
67 export ARCHDEF
68 export ALTARCHDEF
69
70 quiet_cmd_o_hdr_install   = INSTALL $(_dst)/$@
71       cmd_o_hdr_install   = cp $(objtree)/$(obj)/$@ $(INSTALL_HDR_PATH)/$(_dst)
72
73 quiet_cmd_headers_install = INSTALL $(_dst)/$@
74       cmd_headers_install = $(HDRSED) $(srctree)/$(obj)/$@              \
75                             > $(INSTALL_HDR_PATH)/$(_dst)/$@
76
77 quiet_cmd_unifdef         = UNIFDEF $(_dst)/$@
78       cmd_unifdef         = $(UNIFDEF) $(srctree)/$(obj)/$@ | $(HDRSED) \
79                             > $(INSTALL_HDR_PATH)/$(_dst)/$@ || :
80
81 quiet_cmd_mkdir           = MKDIR   $@
82       cmd_mkdir           = mkdir -p $(INSTALL_HDR_PATH)/$@
83
84 quiet_cmd_gen             = GEN     $(_dst)/$@
85       cmd_gen             = \
86 STUBDEF=__ASM_STUB_`echo $@ | tr a-z. A-Z_`;                            \
87 (echo "/* File autogenerated by 'make headers_install' */" ;            \
88 echo "\#ifndef $$STUBDEF" ;                                             \
89 echo "\#define $$STUBDEF" ;                                             \
90 echo "\# if $(ARCHDEF)" ;                                               \
91 if [ -r $(srctree)/include/$(archasm)/$@ ]; then                        \
92         echo "\#  include <$(archasm)/$@>" ;                            \
93 else                                                                    \
94         echo "\#  error $(archasm)/$@ does not exist in"                \
95                         "the $(ARCH) architecture" ;                    \
96 fi ;                                                                    \
97 echo "\# elif $(ALTARCHDEF)" ;                                          \
98 if [ -r $(srctree)/include/$(altarchasm)/$@ ]; then                     \
99         echo "\#  include <$(altarchasm)/$@>" ;                         \
100 else                                                                    \
101         echo "\#  error $(altarchasm)/$@ does not exist in"             \
102                         "the $(ALTARCH) architecture" ;                 \
103 fi ;                                                                    \
104 echo "\# else" ;                                                        \
105 echo "\#  warning This machine appears to be"                           \
106                  "neither $(ARCH) nor $(ALTARCH)." ;                    \
107 echo "\# endif" ;                                                       \
108 echo "\#endif /* $$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
123 ifdef GENASM
124 $(objhdr-y) $(header-y) $(unifdef-y):
125         $(call cmd,gen)
126
127 else
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)
136 endif
137
138 hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
139
140 .PHONY: altarch-dir
141 altarch-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)