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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-10 20:45:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-10 20:45:36 -0700
commit791a9a666d1afe2603bcb2c6a4852d684e879252 (patch)
tree5ebffa701b75c843fb10455b1e776e5df798d715 /scripts
parent23ea3f62f3f90caaa7b4bf32690c341101228cca (diff)
parent3e18c637fa3e2f6836a4034c80ca0a86be968efc (diff)
Merge tag 'kbuild-uapi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild UAPI updates from Masahiro Yamada: "Improvement of headers_install by Nicolas Dichtel. It has been long since the introduction of uapi directories, but the de-coupling of exported headers has not been completed. Headers listed in header-y are exported whether they exist in uapi directories or not. His work fixes this inconsistency. All (and only) headers under uapi directories are now exported. The asm-generic wrappers are still exceptions, but this is a big step forward" * tag 'kbuild-uapi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: arch/include: remove empty Kbuild files uapi: export all arch specifics directories uapi: export all headers under uapi directories smc_diag.h: fix include from userland btrfs_tree.h: fix include from userland uapi: includes linux/types.h before exporting files Makefile.headersinst: remove destination-y option Makefile.headersinst: cleanup input files x86: stop exporting msr-index.h to userland nios2: put setup.h in uapi h8300: put bitsperlong.h in uapi
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Makefile.headersinst68
1 files changed, 30 insertions, 38 deletions
diff --git a/scripts/Makefile.headersinst b/scripts/Makefile.headersinst
index 1106d6ca3a38..6ba97a1f9c5a 100644
--- a/scripts/Makefile.headersinst
+++ b/scripts/Makefile.headersinst
@@ -1,20 +1,22 @@
# ==========================================================================
# 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
+# All headers under include/uapi, include/generated/uapi,
+# arch/<arch>/include/uapi and arch/<arch>/include/generated/uapi are
+# exported.
+# They are preprocessed to remove __KERNEL__ section of the file.
#
# ==========================================================================
# generated header directory
gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj)))
+# Kbuild file is optional
kbuild-file := $(srctree)/$(obj)/Kbuild
-include $(kbuild-file)
+-include $(kbuild-file)
# called may set destination dir (when installing to asm/)
-_dst := $(if $(destination-y),$(destination-y),$(if $(dst),$(dst),$(obj)))
+_dst := $(if $(dst),$(dst),$(obj))
old-kbuild-file := $(srctree)/$(subst uapi/,,$(obj))/Kbuild
ifneq ($(wildcard $(old-kbuild-file)),)
@@ -25,9 +27,14 @@ 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))
+srcdir := $(srctree)/$(obj)
+gendir := $(objtree)/$(gen)
+subdirs := $(patsubst $(srcdir)/%/.,%,$(wildcard $(srcdir)/*/.))
+header-files := $(notdir $(wildcard $(srcdir)/*.h))
+header-files += $(notdir $(wildcard $(srcdir)/*.agh))
+header-files := $(filter-out $(no-export-headers), $(header-files))
+genhdr-files := $(notdir $(wildcard $(gendir)/*.h))
+genhdr-files := $(filter-out $(header-files), $(genhdr-files))
# files used to track state of install/check
install-file := $(installdir)/.install
@@ -35,36 +42,20 @@ 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))
+generic-files := $(notdir $(wildcard $(srctree)/include/uapi/asm-generic/*.h))
+wrapper-files := $(filter $(generic-files), $(generic-y))
+wrapper-files := $(filter-out $(header-files), $(wrapper-files))
# all headers files for this dir
-header-y := $(filter-out $(generic-y), $(header-y))
-all-files := $(header-y) $(genhdr-y) $(wrapper-files)
+all-files := $(header-files) $(genhdr-files) $(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 $(input-files3))
+ifneq ($(mandatory-y),)
+missing := $(filter-out $(all-files),$(mandatory-y))
+ifneq ($(missing),)
+$(error Some mandatory headers ($(missing)) are missing in $(obj))
+endif
+endif
# Work out what needs to be removed
oldheaders := $(patsubst $(installdir)/%,%,$(wildcard $(installdir)/*.h))
@@ -78,9 +69,8 @@ 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); \
+ $(CONFIG_SHELL) $< $(installdir) $(srcdir) $(header-files); \
+ $(CONFIG_SHELL) $< $(installdir) $(gendir) $(genhdr-files); \
for F in $(wrapper-files); do \
echo "\#include <asm-generic/$$F>" > $(installdir)/$$F; \
done; \
@@ -106,7 +96,9 @@ __headersinst: $(subdirs) $(install-file)
@:
targets += $(install-file)
-$(install-file): scripts/headers_install.sh $(input-files1) $(input-files2) $(input-files3) FORCE
+$(install-file): scripts/headers_install.sh \
+ $(addprefix $(srcdir)/,$(header-files)) \
+ $(addprefix $(gendir)/,$(genhdr-files)) FORCE
$(if $(unwanted),$(call cmd,remove),)
$(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
$(call if_changed,install)

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