diff --git a/scripts/Makefile.headersinst b/scripts/Makefile.headersinst
index 599503f0e5f2a80fd2ec28c038ced4b0b676d74a..be2b70c48a3bc068dd5a97c6bfede82749a47a3d 100644
--- a/scripts/Makefile.headersinst
+++ b/scripts/Makefile.headersinst
@@ -1,26 +1,14 @@
# ==========================================================================
# 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
+# header-y - list files to be installed. They are preprocessed
+# to remove __KERNEL__ section of the file
+# unifdef-y - Same as header-y. Obsolete
+# objhdr-y - Same as header-y but for generated files
#
# ==========================================================================
-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:]]\{1,\}/ /g" \
- -e "s/(__user[[:space:]]\{1,\}/ (/g" \
- -e "s/[[:space:]]__force[[:space:]]\{1,\}/ /g" \
- -e "s/(__force[[:space:]]\{1,\}/ (/g" \
- -e "s/[[:space:]]__iomem[[:space:]]\{1,\}/ /g" \
- -e "s/(__iomem[[:space:]]\{1,\}/ (/g" \
- -e "s/[[:space:]]__attribute_const__[[:space:]]\{1,\}/\ /g" \
- -e "s/[[:space:]]__attribute_const__$$//" \
- -e "/^\#include <linux\/compiler.h>/d"
-
+# called may set destination dir (when installing to asm/)
_dst := $(if $(dst),$(dst),$(obj))
kbuild-file := $(srctree)/$(obj)/Kbuild
@@ -28,89 +16,82 @@ include $(kbuild-file)
include scripts/Kbuild.include
-install := $(INSTALL_HDR_PATH)/$(_dst)
-
-header-y := $(sort $(header-y) $(unifdef-y))
-subdir-y := $(patsubst %/,%,$(filter %/, $(header-y)))
-header-y := $(filter-out %/, $(header-y))
+install := $(INSTALL_HDR_PATH)/$(_dst)
-# stamp files for header checks
-check-y := $(patsubst %,.check.%,$(header-y) $(objhdr-y))
-
-# Work out what needs to be removed
-oldheaders := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h))
-unwanted := $(filter-out $(header-y) $(objhdr-y),$(oldheaders))
+header-y := $(sort $(header-y) $(unifdef-y))
+subdirs := $(patsubst %/,%,$(filter %/, $(header-y)))
+header-y := $(filter-out %/, $(header-y))
-oldcheckstamps := $(patsubst $(install)/%,%,$(wildcard $(install)/.check.*.h))
-unwanted += $(filter-out $(check-y),$(oldcheckstamps))
+# files used to track state of install/check
+install-file := $(install)/.install
+check-file := $(install)/.check
-# Prefix them all with full paths to $(INSTALL_HDR_PATH)
-header-y := $(patsubst %,$(install)/%,$(header-y))
-objhdr-y := $(patsubst %,$(install)/%,$(objhdr-y))
-check-y := $(patsubst %,$(install)/%,$(check-y))
+# all headers files for this dir
+all-files := $(header-y) $(objhdr-y)
+input-files := $(addprefix $(srctree)/$(obj)/,$(header-y)) \
+ $(addprefix $(objtree)/$(obj)/,$(objhdr-y))
+output-files := $(addprefix $(install)/, $(all-files))
-quiet_cmd_o_hdr_install = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
- cmd_o_hdr_install = cp $(patsubst $(install)/%,$(objtree)/$(obj)/%,$@) \
- $(install)
-
-quiet_cmd_unifdef = UNIFDEF $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
- cmd_unifdef = $(UNIFDEF) $(patsubst $(install)/%,$(srctree)/$(obj)/%,$@)\
- | $(HDRSED) > $@ || :
+# Work out what needs to be removed
+oldheaders := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h))
+unwanted := $(filter-out $(all-files),$(oldheaders))
-quiet_cmd_check = CHECK $(patsubst $(install)/.check.%,$(_dst)/%,$@)
- cmd_check = $(CONFIG_SHELL) $(srctree)/scripts/hdrcheck.sh \
- $(INSTALL_HDR_PATH)/include $(subst /.check.,/,$@) $@
+# Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
+unwanted-file := $(addprefix $(install)/, $(unwanted))
-quiet_cmd_remove = REMOVE $(_dst)/$@
- cmd_remove = rm -f $(install)/$@
+printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@))
-quiet_cmd_mkdir = MKDIR $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
- cmd_mkdir = mkdir -p $@
+quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
+ file$(if $(word 2, $(all-files)),s))
+ cmd_install = $(PERL) $< $(srctree)/$(obj) $(install) $(header-y); \
+ $(PERL) $< $(objtree)/$(obj) $(install) $(objhdr-y); \
+ touch $@
-.PHONY: __headersinst __headerscheck
+quiet_cmd_remove = REMOVE $(unwanted)
+ cmd_remove = rm -f $(unwanted-file)
-ifdef HDRCHECK
-__headerscheck: $(subdir-y) $(check-y)
- @true
+quiet_cmd_check = CHECK $(printdir) ($(words $(all-files)) files)
+ cmd_check = $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH) \
+ $(addprefix $(install)/, $(all-files)); \
+ touch $@
-$(check-y) : $(install)/.check.%.h : $(install)/%.h
- $(call cmd,check)
+PHONY += __headersinst __headerscheck
-# Other dependencies for $(check-y)
-include /dev/null $(wildcard $(check-y))
+ifndef HDRCHECK
+# Rules for installing headers
+__headersinst: $(subdirs) $(install-file)
+ @:
-# but leave $(check-y) as .PHONY for now until those
-# deps are actually correct.
-.PHONY: $(check-y)
+targets += $(install-file)
+$(install-file): scripts/headers_install.pl $(input-files) FORCE
+ $(if $(unwanted),$(call cmd,remove),)
+ $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
+ $(call if_changed,install)
else
-# Rules for installing headers
-__headersinst: $(subdir-y) $(header-y) $(objhdr-y)
- @true
+__headerscheck: $(subdirs) $(check-file)
+ @:
-$(objhdr-y) $(subdir-y) $(header-y): | $(install) $(unwanted)
+targets += $(check-file)
+$(check-file): scripts/headers_check.pl $(output-files) FORCE
+ $(call if_changed,check)
-$(install):
- $(call cmd,mkdir)
-
-# Rules for removing unwanted header files
-.PHONY: $(unwanted)
-$(unwanted):
- $(call cmd,remove)
+endif
-# Install generated files
-$(objhdr-y): $(install)/%.h: $(objtree)/$(obj)/%.h $(kbuild-file)
- $(call cmd,o_hdr_install)
+# Recursion
+hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
+.PHONY: $(subdirs)
+$(subdirs):
+ $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
-# Unifdef header files and install them
-$(header-y): $(install)/%.h: $(srctree)/$(obj)/%.h $(kbuild-file)
- $(call cmd,unifdef)
+targets := $(wildcard $(sort $(targets)))
+cmd_files := $(wildcard \
+ $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
+ifneq ($(cmd_files),)
+ include $(cmd_files)
endif
-hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
-
-# Recursion
-.PHONY: $(subdir-y)
-$(subdir-y):
- $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
+.PHONY: $(PHONY)
+PHONY += FORCE
+FORCE: ;
diff --git a/scripts/hdrcheck.sh b/scripts/hdrcheck.sh
deleted file mode 100755
index 31598584f87183caf56c4c0fe2fc196ae4546d50..0000000000000000000000000000000000000000
--- a/scripts/hdrcheck.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/sh
-
-for FILE in `grep '^[ \t]*#[ \t]*include[ \t]*<' $2 | cut -f2 -d\< | cut -f1 -d\> | egrep ^linux\|^asm` ; do
- if [ ! -r $1/$FILE ]; then
- echo $2 requires $FILE, which does not exist in exported headers
- exit 1
- fi
-done
-# FIXME: List dependencies into $3
-touch $3
diff --git a/scripts/headers_check.pl b/scripts/headers_check.pl
new file mode 100644
index 0000000000000000000000000000000000000000..15d53a6b1a1f99901b9bdf07e052331ce2a86a2e
--- /dev/null
+++ b/scripts/headers_check.pl
@@ -0,0 +1,56 @@
+#!/usr/bin/perl
+#
+# headers_check.pl execute a number of trivial consistency checks
+#
+# Usage: headers_check.pl dir [files...]
+# dir: dir to look for included files
+# arch: architecture
+# files: list of files to check
+#
+# The script reads the supplied files line by line and:
+#
+# 1) for each include statement it checks if the
+# included file actually exists.
+# Only include files located in asm* and linux* are checked.
+# The rest are assumed to be system include files.
+#
+# 2) TODO: check for leaked CONFIG_ symbols
+
+use strict;
+use warnings;
+
+my ($dir, $arch, @files) = @ARGV;
+
+my $ret = 0;
+my $line;
+my $lineno = 0;
+my $filename;
+
+foreach my $file (@files) {
+ $filename = $file;
+ open(my $fh, '<', "$filename") or die "$filename: $!\n";
+ $lineno = 0;
+ while ($line = <$fh>) {
+ $lineno++;
+ check_include();
+ }
+ close $fh;
+}
+exit $ret;
+
+sub check_include
+{
+ if ($line =~ m/^\s*#\s*include\s+<((asm|linux).*)>/) {
+ my $inc = $1;
+ my $found;
+ $found = stat($dir . "/" . $inc);
+ if (!$found) {
+ $inc =~ s#asm/#asm-$arch/#;
+ $found = stat($dir . "/" . $inc);
+ }
+ if (!$found) {
+ printf STDERR "$filename:$lineno: included file '$inc' is not exported\n";
+ $ret = 1;
+ }
+ }
+}
diff --git a/scripts/headers_install.pl b/scripts/headers_install.pl
new file mode 100644
index 0000000000000000000000000000000000000000..f0ff9a35acd07dac648c051542a33ffa0d2ed6db
--- /dev/null
+++ b/scripts/headers_install.pl
@@ -0,0 +1,42 @@
+#!/usr/bin/perl
+#
+# headers_install prepare the listed header files for use in
+# user space and copy the files to their destination.
+#
+# Usage: headers_install.pl odir installdir [files...]
+# odir: dir to open files
+# install: dir to install the files
+# files: list of files to check
+#
+# Step in preparation for users space:
+# 1) Drop all use of compiler.h definitions
+# 2) Drop include of compiler.h
+# 3) Drop all sections defined out by __KERNEL__ (using unifdef)
+
+use strict;
+use warnings;
+
+my ($readdir, $installdir, @files) = @ARGV;
+
+my $unifdef = "scripts/unifdef -U__KERNEL__";
+
+foreach my $file (@files) {
+ my $tmpfile = "$installdir/$file.tmp";
+ open(my $infile, '<', "$readdir/$file")
+ or die "$readdir/$file: $!\n";
+ open(my $outfile, '>', "$tmpfile") or die "$tmpfile: $!\n";
+ while (my $line = <$infile>) {
+ $line =~ s/([\s(])__user\s/$1/g;
+ $line =~ s/([\s(])__force\s/$1/g;
+ $line =~ s/([\s(])__iomem\s/$1/g;
+ $line =~ s/\s__attribute_const__\s/ /g;
+ $line =~ s/\s__attribute_const__$//g;
+ $line =~ s/^#include <linux\/compiler.h>//;
+ printf $outfile "%s", $line;
+ }
+ close $outfile;
+ close $infile;
+ system $unifdef . " $tmpfile > $installdir/$file";
+ unlink $tmpfile;
+}
+exit 0;