mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-20 14:16:02 +00:00
![David Woodhouse](/assets/img/avatar_default.png)
A bug in headers_install for ARCH=x86_64 yields an asm/ directory full of files all of which are using the same #ifdef guard, "__ASM_STUB_" with no postfix. So the second and later asm files #included in the same C file (often through standard headers like ioctl.h) yields no symbols. Strangeness with the Ubuntu 'tell me if I support something that's not explcitly mentioned in POSIX, and I'll strip it out' shell, I believe. We don't need the 'export' but we do need a semicolon at the end of the FNAME line: Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
194 lines
6.9 KiB
Makefile
194 lines
6.9 KiB
Makefile
# ==========================================================================
|
|
# 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 := scripts/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))
|
|
|
|
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 $(wildcard...).
|
|
GENASM := 1
|
|
archasm := $(subst include/asm,asm-$(ARCH),$(obj))
|
|
altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
|
|
KBUILDFILES := $(wildcard $(srctree)/include/$(archasm)/Kbuild $(srctree)/include/$(altarchasm)/Kbuild)
|
|
else
|
|
KBUILDFILES := $(srctree)/$(obj)/Kbuild
|
|
endif
|
|
|
|
include $(KBUILDFILES)
|
|
|
|
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.
|
|
# Unless $(BIASMDIR) is set, in which case we're probably doing
|
|
# a 'headers_install_all' build and we should keep the -$(ARCH)
|
|
# in the directory name.
|
|
ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH)$(BIASMDIR))
|
|
_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))
|
|
|
|
# stamp files for header checks
|
|
check-y := $(patsubst %,.check.%,$(header-y) $(unifdef-y) $(objhdr-y))
|
|
|
|
# Work out what needs to be removed
|
|
oldheaders := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/*.h))
|
|
unwanted := $(filter-out $(header-y) $(unifdef-y) $(objhdr-y),$(oldheaders))
|
|
|
|
oldcheckstamps := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/.check.*.h))
|
|
unwanted += $(filter-out $(check-y),$(oldcheckstamps))
|
|
|
|
# Prefix them all with full paths to $(INSTALL_HDR_PATH)
|
|
header-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(header-y))
|
|
unifdef-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(unifdef-y))
|
|
objhdr-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(objhdr-y))
|
|
check-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(check-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 $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
|
|
cmd_o_hdr_install = cp $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(objtree)/$(obj)/%,$@) \
|
|
$(INSTALL_HDR_PATH)/$(_dst)
|
|
|
|
quiet_cmd_headers_install = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
|
|
cmd_headers_install = $(HDRSED) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@) \
|
|
> $@
|
|
|
|
quiet_cmd_unifdef = UNIFDEF $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
|
|
cmd_unifdef = $(UNIFDEF) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@) \
|
|
| $(HDRSED) > $@ || :
|
|
|
|
quiet_cmd_check = CHECK $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/.check.%,$(_dst)/%,$@)
|
|
cmd_check = $(CONFIG_SHELL) $(srctree)/scripts/hdrcheck.sh \
|
|
$(INSTALL_HDR_PATH)/include $(subst /.check.,/,$@) $@
|
|
|
|
quiet_cmd_remove = REMOVE $(_dst)/$@
|
|
cmd_remove = rm -f $(INSTALL_HDR_PATH)/$(_dst)/$@
|
|
|
|
quiet_cmd_mkdir = MKDIR $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
|
|
cmd_mkdir = mkdir -p $@
|
|
|
|
quiet_cmd_gen = GEN $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
|
|
cmd_gen = \
|
|
FNAME=$(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$@); \
|
|
STUBDEF=__ASM_STUB_`echo $$FNAME | tr a-z.- A-Z__`; \
|
|
(echo "/* File autogenerated by 'make headers_install' */" ; \
|
|
echo "\#ifndef $$STUBDEF" ; \
|
|
echo "\#define $$STUBDEF" ; \
|
|
echo "\# if $(ARCHDEF)" ; \
|
|
if [ -r $(subst /$(_dst)/,/include/$(archasm)/,$@) ]; then \
|
|
echo "\# include <$(archasm)/$$FNAME>" ; \
|
|
else \
|
|
echo "\# error $(archasm)/$$FNAME does not exist in" \
|
|
"the $(ARCH) architecture" ; \
|
|
fi ; \
|
|
echo "\# elif $(ALTARCHDEF)" ; \
|
|
if [ -r $(subst /$(_dst)/,/include/$(altarchasm)/,$@) ]; then \
|
|
echo "\# include <$(altarchasm)/$$FNAME>" ; \
|
|
else \
|
|
echo "\# error $(altarchasm)/$$FNAME 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 */" ; \
|
|
) > $@
|
|
|
|
.PHONY: __headersinst __headerscheck
|
|
|
|
ifdef HDRCHECK
|
|
__headerscheck: $(subdir-y) $(check-y)
|
|
@true
|
|
|
|
$(check-y) : $(INSTALL_HDR_PATH)/$(_dst)/.check.%.h : $(INSTALL_HDR_PATH)/$(_dst)/%.h
|
|
$(call cmd,check)
|
|
|
|
# Other dependencies for $(check-y)
|
|
include /dev/null $(wildcard $(check-y))
|
|
|
|
# ... but leave $(check-y) as .PHONY for now until those deps are actually correct.
|
|
.PHONY: $(check-y)
|
|
|
|
else
|
|
# Rules for installing headers
|
|
__headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y)
|
|
@true
|
|
|
|
$(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): | $(INSTALL_HDR_PATH)/$(_dst) $(unwanted)
|
|
|
|
$(INSTALL_HDR_PATH)/$(_dst):
|
|
$(call cmd,mkdir)
|
|
|
|
.PHONY: $(unwanted)
|
|
$(unwanted):
|
|
$(call cmd,remove)
|
|
|
|
ifdef GENASM
|
|
$(objhdr-y) $(header-y) $(unifdef-y): $(KBUILDFILES)
|
|
$(call cmd,gen)
|
|
|
|
else
|
|
$(objhdr-y) : $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(objtree)/$(obj)/%.h $(KBUILDFILES)
|
|
$(call cmd,o_hdr_install)
|
|
|
|
$(header-y) : $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
|
|
$(call cmd,headers_install)
|
|
|
|
$(unifdef-y) : $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
|
|
$(call cmd,unifdef)
|
|
endif
|
|
endif
|
|
|
|
hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
|
|
|
|
.PHONY: altarch-dir
|
|
# All the files in the normal arch dir must be created first, since we test
|
|
# for their existence.
|
|
altarch-dir: $(subdir-y) $(header-y) $(unifdef-y) $(objhdr-y)
|
|
$(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)
|
|
$(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm$(BIASMDIR)
|
|
|
|
# Recursion
|
|
.PHONY: $(subdir-y)
|
|
$(subdir-y):
|
|
$(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel)
|