Makefile.headersinst 4.7 KB
Newer Older
alaskalinuxuser's avatar
alaskalinuxuser committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
# ==========================================================================
# Installing headers
#
# header-y  - list files to be installed. They are preprocessed
#             to remove __KERNEL__ section of the file
# genhdr-y  - Same as header-y but in a generated/ directory
#
# ==========================================================================

# generated header directory
gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj)))

kbuild-file := $(srctree)/$(obj)/Kbuild
include $(kbuild-file)

# called may set destination dir (when installing to asm/)
_dst := $(if $(destination-y),$(destination-y),$(if $(dst),$(dst),$(obj)))

old-kbuild-file := $(srctree)/$(subst uapi/,,$(obj))/Kbuild
ifneq ($(wildcard $(old-kbuild-file)),)
include $(old-kbuild-file)
endif

include scripts/Kbuild.include

installdir    := $(INSTALL_HDR_PATH)/$(subst uapi/,,$(_dst))

header-y      := $(sort $(header-y))
subdirs       := $(patsubst %/,%,$(filter %/, $(header-y)))
header-y      := $(filter-out %/, $(header-y))

# files used to track state of install/check
install-file  := $(installdir)/.install
check-file    := $(installdir)/.check

# generic-y list all files an architecture uses from asm-generic
# Use this to build a list of headers which require a wrapper
wrapper-files := $(filter $(header-y), $(generic-y))

srcdir        := $(srctree)/$(obj)
gendir        := $(objtree)/$(gen)

oldsrcdir     := $(srctree)/$(subst /uapi,,$(obj))

# all headers files for this dir
header-y      := $(filter-out $(generic-y), $(header-y))
all-files     := $(header-y) $(genhdr-y) $(wrapper-files)
output-files  := $(addprefix $(installdir)/, $(all-files))

input-files1  := $(foreach hdr, $(header-y), \
		   $(if $(wildcard $(srcdir)/$(hdr)), \
			$(wildcard $(srcdir)/$(hdr))) \
		   )
input-files1-name := $(notdir $(input-files1))
input-files2  := $(foreach hdr, $(header-y), \
		   $(if  $(wildcard $(srcdir)/$(hdr)),, \
			$(if $(wildcard $(oldsrcdir)/$(hdr)), \
				$(wildcard $(oldsrcdir)/$(hdr)), \
				$(error Missing UAPI file $(srcdir)/$(hdr))) \
		   ))
input-files2-name := $(notdir $(input-files2))
input-files3  := $(foreach hdr, $(genhdr-y), \
		   $(if	$(wildcard $(gendir)/$(hdr)), \
			$(wildcard $(gendir)/$(hdr)), \
			$(error Missing generated UAPI file $(gendir)/$(hdr)) \
		   ))
input-files3-name := $(notdir $(input-files3))

# Work out what needs to be removed
oldheaders    := $(patsubst $(installdir)/%,%,$(wildcard $(installdir)/*.h))
unwanted      := $(filter-out $(all-files),$(oldheaders))

# Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
unwanted-file := $(addprefix $(installdir)/, $(unwanted))

printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@))

quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
                            file$(if $(word 2, $(all-files)),s))
      cmd_install = \
        $(CONFIG_SHELL) $< $(installdir) $(srcdir) $(input-files1-name); \
        $(CONFIG_SHELL) $< $(installdir) $(oldsrcdir) $(input-files2-name); \
        $(CONFIG_SHELL) $< $(installdir) $(gendir) $(input-files3-name); \
        for F in $(wrapper-files); do                                   \
                echo "\#include <asm-generic/$$F>" > $(installdir)/$$F;    \
        done;                                                           \
        touch $@

quiet_cmd_remove = REMOVE  $(unwanted)
      cmd_remove = rm -f $(unwanted-file)

quiet_cmd_check = CHECK   $(printdir) ($(words $(all-files)) files)
# Headers list can be pretty long, xargs helps to avoid
# the "Argument list too long" error.
      cmd_check = for f in $(all-files); do                          \
                  echo "$(installdir)/$${f}"; done                      \
                  | xargs                                            \
                  $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \
	          touch $@

PHONY += __headersinst __headerscheck

ifndef HDRCHECK
# Rules for installing headers
__headersinst: $(subdirs) $(install-file)
	@:

targets += $(install-file)
$(install-file): scripts/headers_install.sh $(input-files1) $(input-files2) $(input-files3) FORCE
	$(if $(unwanted),$(call cmd,remove),)
	$(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
	$(call if_changed,install)

else
__headerscheck: $(subdirs) $(check-file)
	@:

targets += $(check-file)
$(check-file): scripts/headers_check.pl $(output-files) FORCE
	$(call if_changed,check)

endif

# Recursion
.PHONY: $(subdirs)
$(subdirs):
	$(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$(subst drivers/staging,usr/include/linux/staging,$@)

targets := $(wildcard $(sort $(targets)))
cmd_files := $(wildcard \
             $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))

ifneq ($(cmd_files),)
	include $(cmd_files)
endif

.PHONY: $(PHONY)
PHONY += FORCE
FORCE: ;