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author | David Woodhouse <dwmw2@infradead.org> | 2006-06-18 11:58:39 +0100 |
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committer | David Woodhouse <dwmw2@infradead.org> | 2006-06-18 11:58:39 +0100 |
commit | 8d730cfb50cc77da6d00f941daef440918a1922f (patch) | |
tree | 9679a9ba79e3c496058d351417a058432c42257d /scripts | |
parent | 9348f0de2d2b541b4ba64fb1f4efee9710a3d731 (diff) | |
download | linux-3.10-8d730cfb50cc77da6d00f941daef440918a1922f.tar.gz linux-3.10-8d730cfb50cc77da6d00f941daef440918a1922f.tar.bz2 linux-3.10-8d730cfb50cc77da6d00f941daef440918a1922f.zip |
Basic implementation of 'make headers_install'
This adds a make target which exports a subset of headers which contain
definitions which are useful for system libraries and tools. It uses the
BSD 'unifdef' tool to remove instances of #ifdef __KERNEL__, and uses
sed to remove markers like __user.
Based on an original implementation by Arnd Bergmann <arnd@arndb.de>
Hacked about by David Woodhouse <dwmw2@infradead.org>
Reviewed and cleaned up by Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'scripts')
-rw-r--r-- | scripts/Makefile.headersinst | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/scripts/Makefile.headersinst b/scripts/Makefile.headersinst new file mode 100644 index 00000000000..688f8cb081d --- /dev/null +++ b/scripts/Makefile.headersinst @@ -0,0 +1,147 @@ +# ========================================================================== +# Installing headers +# +# header-y files will be installed verbatim +# unifdef-y are the files where unifdef will be run before installing files +# objhdr-y are generated files that will be installed verbatim +# +# ========================================================================== + +UNIFDEF := unifdef -U__KERNEL__ + +# Eliminate the contents of (and inclusions of) compiler.h +HDRSED := sed -e "s/ inline / __inline__ /g" \ + -e "s/[[:space:]]__user[[:space:]]\+/ /g" \ + -e "s/(__user[[:space:]]\+/ (/g" \ + -e "s/[[:space:]]__force[[:space:]]\+/ /g" \ + -e "s/(__force[[:space:]]\+/ (/g" \ + -e "s/[[:space:]]__iomem[[:space:]]\+/ /g" \ + -e "s/(__iomem[[:space:]]\+/ (/g" \ + -e "s/[[:space:]]__attribute_const__[[:space:]]\+/\ /g" \ + -e "s/[[:space:]]__attribute_const__$$//" \ + -e "/^\#include <linux\/compiler.h>/d" + +_dst := $(if $(dst),$(dst),$(obj)) + +.PHONY: __headersinst +__headersinst: + + +ifeq (,$(patsubst include/asm/%,,$(obj)/)) +# For producing the generated stuff in include/asm for biarch builds, include +# both sets of Kbuild files; we'll generate anything which is mentioned in +# _either_ arch, and recurse into subdirectories which are mentioned in either +# arch. Since some directories may exist in one but not the other, we must +# use '-include'. +GENASM := 1 +archasm := $(subst include/asm,asm-$(ARCH),$(obj)) +altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj)) +-include $(srctree)/include/$(archasm)/Kbuild +-include $(srctree)/include/$(altarchasm)/Kbuild +else +include $(srctree)/$(obj)/Kbuild +endif + +include scripts/Kbuild.include + +# If this is include/asm-$(ARCH) and there's no $(ALTARCH), then +# override $(_dst) so that we install to include/asm directly. +ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH)) + _dst := include/asm +endif + +header-y := $(sort $(header-y)) +unifdef-y := $(sort $(unifdef-y)) +subdir-y := $(patsubst %/,%,$(filter %/, $(header-y))) +header-y := $(filter-out %/, $(header-y)) +header-y := $(filter-out $(unifdef-y),$(header-y)) + +ifdef ALTARCH +ifeq ($(obj),include/asm-$(ARCH)) +altarch-y := altarch-dir +endif +endif + +# Make the definitions visible for recursive make invocations +export ALTARCH +export ARCHDEF +export ALTARCHDEF + +quiet_cmd_o_hdr_install = INSTALL $(_dst)/$@ + cmd_o_hdr_install = cp $(objtree)/$(obj)/$@ $(INSTALL_HDR_PATH)/$(_dst) + +quiet_cmd_headers_install = INSTALL $(_dst)/$@ + cmd_headers_install = $(HDRSED) $(srctree)/$(obj)/$@ \ + > $(INSTALL_HDR_PATH)/$(_dst)/$@ + +quiet_cmd_unifdef = UNIFDEF $(_dst)/$@ + cmd_unifdef = $(UNIFDEF) $(srctree)/$(obj)/$@ | $(HDRSED) \ + > $(INSTALL_HDR_PATH)/$(_dst)/$@ || : + +quiet_cmd_mkdir = MKDIR $@ + cmd_mkdir = mkdir -p $(INSTALL_HDR_PATH)/$@ + +quiet_cmd_gen = GEN $(_dst)/$@ + cmd_gen = \ +STUBDEF=__ASM_STUB_`echo $@ | tr a-z. A-Z_`; \ +(echo "/* File autogenerated by 'make headers_install' */" ; \ +echo "\#ifndef $$STUBDEF" ; \ +echo "\#define $$STUBDEF" ; \ +echo "\# if $(ARCHDEF)" ; \ +if [ -r $(srctree)/include/$(archasm)/$@ ]; then \ + echo "\# include <$(archasm)/$@>" ; \ +else \ + echo "\# error $(archasm)/$@ does not exist in" \ + "the $(ARCH) architecture" ; \ +fi ; \ +echo "\# elif $(ALTARCHDEF)" ; \ +if [ -r $(srctree)/include/$(altarchasm)/$@ ]; then \ + echo "\# include <$(altarchasm)/$@>" ; \ +else \ + echo "\# error $(altarchasm)/$@ does not exist in" \ + "the $(ALTARCH) architecture" ; \ +fi ; \ +echo "\# else" ; \ +echo "\# warning This machine appears to be" \ + "neither $(ARCH) nor $(ALTARCH)." ; \ +echo "\# endif" ; \ +echo "\#endif /* $$STUBDEF */" ; \ +) > $(INSTALL_HDR_PATH)/$(_dst)/$@ + +__headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y) + +.PHONY: $(header-y) $(unifdef-y) $(subdir-y) + +# Rules for installing headers + +$(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): $(_dst) + +.PHONY: $(_dst) +$(_dst): + $(call cmd,mkdir) + +ifdef GENASM +$(objhdr-y) $(header-y) $(unifdef-y): + $(call cmd,gen) + +else +$(objhdr-y): + $(call cmd,o_hdr_install) + +$(header-y): + $(call cmd,headers_install) + +$(unifdef-y): + $(call cmd,unifdef) +endif + +hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj + +.PHONY: altarch-dir +altarch-dir: + $(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH) + $(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm + +# Recursion +$(subdir-y): + $(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel) |