#!/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 readdir installdir arch [files...] # readdir: dir to open files # installdir: dir to install the files # 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; use warnings; my ($readdir, $installdir, $arch, @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;