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:]]\{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 26kbuild-file := $(srctree)/$(obj)/Kbuild 27include $(kbuild-file) 28 29include scripts/Kbuild.include 30 31# If this is include/asm-$(ARCH) then override $(_dst) so that 32# we install to include/asm directly. 33# Unless $(BIASMDIR) is set, in which case we're probably doing 34# a 'headers_install_all' build and we should keep the -$(ARCH) 35# in the directory name. 36ifeq ($(obj),include/asm-$(ARCH)$(BIASMDIR)) 37 _dst := include/asm 38endif 39 40install := $(INSTALL_HDR_PATH)/$(_dst) 41 42header-y := $(sort $(header-y) $(unifdef-y)) 43subdir-y := $(patsubst %/,%,$(filter %/, $(header-y))) 44header-y := $(filter-out %/, $(header-y)) 45 46# stamp files for header checks 47check-y := $(patsubst %,.check.%,$(header-y) $(objhdr-y)) 48 49# Work out what needs to be removed 50oldheaders := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h)) 51unwanted := $(filter-out $(header-y) $(objhdr-y),$(oldheaders)) 52 53oldcheckstamps := $(patsubst $(install)/%,%,$(wildcard $(install)/.check.*.h)) 54unwanted += $(filter-out $(check-y),$(oldcheckstamps)) 55 56# Prefix them all with full paths to $(INSTALL_HDR_PATH) 57header-y := $(patsubst %,$(install)/%,$(header-y)) 58objhdr-y := $(patsubst %,$(install)/%,$(objhdr-y)) 59check-y := $(patsubst %,$(install)/%,$(check-y)) 60 61quiet_cmd_o_hdr_install = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@) 62 cmd_o_hdr_install = cp $(patsubst $(install)/%,$(objtree)/$(obj)/%,$@) \ 63 $(install) 64 65quiet_cmd_unifdef = UNIFDEF $(patsubst $(INSTALL_HDR_PATH)/%,%,$@) 66 cmd_unifdef = $(UNIFDEF) $(patsubst $(install)/%,$(srctree)/$(obj)/%,$@)\ 67 | $(HDRSED) > $@ || : 68 69quiet_cmd_check = CHECK $(patsubst $(install)/.check.%,$(_dst)/%,$@) 70 cmd_check = $(CONFIG_SHELL) $(srctree)/scripts/hdrcheck.sh \ 71 $(INSTALL_HDR_PATH)/include $(subst /.check.,/,$@) $@ 72 73quiet_cmd_remove = REMOVE $(_dst)/$@ 74 cmd_remove = rm -f $(install)/$@ 75 76quiet_cmd_mkdir = MKDIR $(patsubst $(INSTALL_HDR_PATH)/%,%,$@) 77 cmd_mkdir = mkdir -p $@ 78 79.PHONY: __headersinst __headerscheck 80 81ifdef HDRCHECK 82__headerscheck: $(subdir-y) $(check-y) 83 @true 84 85$(check-y) : $(install)/.check.%.h : $(install)/%.h 86 $(call cmd,check) 87 88# Other dependencies for $(check-y) 89include /dev/null $(wildcard $(check-y)) 90 91# but leave $(check-y) as .PHONY for now until those 92# deps are actually correct. 93.PHONY: $(check-y) 94 95else 96# Rules for installing headers 97__headersinst: $(subdir-y) $(header-y) $(objhdr-y) 98 @true 99 100$(objhdr-y) $(subdir-y) $(header-y): | $(install) $(unwanted) 101 102$(install): 103 $(call cmd,mkdir) 104 105# Rules for removing unwanted header files 106.PHONY: $(unwanted) 107$(unwanted): 108 $(call cmd,remove) 109 110# Install generated files 111$(objhdr-y): $(install)/%.h: $(objtree)/$(obj)/%.h $(kbuild-file) 112 $(call cmd,o_hdr_install) 113 114# Unifdef header files and install them 115$(header-y): $(install)/%.h: $(srctree)/$(obj)/%.h $(kbuild-file) 116 $(call cmd,unifdef) 117 118endif 119 120hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 121 122# Recursion 123.PHONY: $(subdir-y) 124$(subdir-y): 125 $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@ 126