From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oa0-f45.google.com ([209.85.219.45]:63622 "EHLO mail-oa0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752846Ab3B0F6H (ORCPT ); Wed, 27 Feb 2013 00:58:07 -0500 Received: by mail-oa0-f45.google.com with SMTP id o6so420321oag.4 for ; Tue, 26 Feb 2013 21:58:07 -0800 (PST) Date: Tue, 26 Feb 2013 21:58:06 -0800 (PST) From: Rob Landley In-Reply-To: <1361944667.957820@landley.net> Message-Id: <1361944667.959170@landley.net> Subject: [PATCH 3/3] convert headers_install.pl to headers_install.sh Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: linux-kbuild@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , Josh Boyer , "Paul E. McKenney" , Andrew Morton , David Howells , Michal Marek , Sam Ravnborg From: Rob Landley Remove perl from make headers_install by replacing a perl script (doing a simple regex search and replace) with a smaller, faster, simpler, POSIX-2008 shell script implementation. The new shell script is a single for loop calling sed and piping its output through unifdef to produce the target file. Same as last time except for minor tweak to deal with code review from here: http://lkml.indiana.edu/hypermail/linux/kernel/1302.3/00078.html (Note that this drops the "arch" argument, which isn't used. Kbuild already points to the right input files on the command line.) Signed-off-by: Rob Landley --- scripts/Makefile.headersinst | 4 +- scripts/headers_install.pl | 63 --------------------------------- scripts/headers_install.sh | 43 ++++++++++++++++++++++ 3 files changed, 45 insertions(+), 65 deletions(-) diff -ruN linux-3.1/scripts/headers_install.sh linux-2.6.30/scripts/headers_install.sh --- linux-3.1/scripts/headers_install.sh +++ linux/scripts/headers_install.sh @@ -0,0 +1,43 @@ +#!/bin/sh + +if [ $# -lt 1 ] +then + echo "Usage: headers_install.sh OUTDIR [FILES...] + echo + echo "Prepares kernel header files for use by user space, by removing" + echo "all compiler.h definitions and #includes, removing any" + echo "#ifdef __KERNEL__ sections, and putting __underscores__ around" + echo "asm/inline/volatile keywords." + echo + echo "OUTDIR: directory to write each userspace header FILE to." + echo "FILES: list of header files to operate on." + + exit 1 +fi + +# Grab arguments + +OUTDIR="$1" +shift + +# Iterate through files listed on command line + +FILE= +trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT +for i in "$@" +do + FILE="$(basename "$i")" + sed -r \ + -e 's/([ \t(])(__user|__force|__iomem)[ \t]/\1/g' \ + -e 's/__attribute_const__([ \t]|$)/\1/g' \ + -e 's@^#include @@' \ + -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \ + -e 's/(^|[ \t(])(inline|asm|volatile)([ \t(]|$)/\1__\2__\3/g' \ + -e 's@#(ifndef|define|endif[ \t]*/[*])[ \t]*_UAPI@#\1 @' \ + "$i" > "$OUTDIR/$FILE.sed" || exit 1 + scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \ + > "$OUTDIR/$FILE" + [ $? -gt 1 ] && exit 1 + rm -f "$OUTDIR/$FILE.sed" +done +trap - EXIT diff -ruN linux-3.1/scripts/Makefile.headersinst --- linux-3.1/scripts/Makefile.headersinst +++ linux/scripts/Makefile.headersinst @@ -71,7 +71,7 @@ quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\ file$(if $(word 2, $(all-files)),s)) cmd_install = \ - $(PERL) $< $(installdir) $(SRCARCH) $(input-files); \ + $(CONFIG_SHELL) $< $(installdir) $(input-files); \ for F in $(wrapper-files); do \ echo "\#include " > $(installdir)/$$F; \ done; \ @@ -97,7 +97,7 @@ @: targets += $(install-file) -$(install-file): scripts/headers_install.pl $(input-files) FORCE +$(install-file): scripts/headers_install.sh $(input-files) FORCE $(if $(unwanted),$(call cmd,remove),) $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@))) $(call if_changed,install) --- a/scripts/headers_install.pl +++ /dev/null @@ -1,63 +0,0 @@ -#!/usr/bin/perl -w -# -# headers_install prepare the listed header files for use in -# user space and copy the files to their destination. -# -# Usage: headers_install.pl readdir installdir arch [files...] -# installdir: dir to install the files to -# arch: current architecture -# arch is used to force a reinstallation when the arch -# changes because kbuild then detect a command line change. -# files: list of files to check -# -# Step in preparation for users space: -# 1) Drop all use of compiler.h definitions -# 2) Drop include of compiler.h -# 3) Drop all sections defined out by __KERNEL__ (using unifdef) - -use strict; - -my ($installdir, $arch, @files) = @ARGV; - -my $unifdef = "scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__"; - -foreach my $filename (@files) { - my $file = $filename; - $file =~ s!^.*/!!; - - my $tmpfile = "$installdir/$file.tmp"; - - open(my $in, '<', $filename) - or die "$filename: $!\n"; - open(my $out, '>', $tmpfile) - or die "$tmpfile: $!\n"; - while (my $line = <$in>) { - $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/\b__packed\b/__attribute__((packed))/g; - $line =~ s/^#include //; - $line =~ s/(^|\s)(inline)\b/$1__$2__/g; - $line =~ s/(^|\s)(asm)\b(\s|[(]|$)/$1__$2__$3/g; - $line =~ s/(^|\s|[(])(volatile)\b(\s|[(]|$)/$1__$2__$3/g; - $line =~ s/#ifndef\s+_UAPI/#ifndef /; - $line =~ s/#define\s+_UAPI/#define /; - $line =~ s!#endif\s+/[*]\s*_UAPI!#endif /* !; - printf {$out} "%s", $line; - } - close $out; - close $in; - - system $unifdef . " $tmpfile > $installdir/$file"; - # unifdef will exit 0 on success, and will exit 1 when the - # file was processed successfully but no changes were made, - # so abort only when it's higher than that. - my $e = $? >> 8; - if ($e > 1) { - die "$tmpfile: $!\n"; - } - unlink $tmpfile; -} -exit 0;