3 # headers_install prepare the listed header files for use in
4 # user space and copy the files to their destination.
6 # Usage: headers_install.pl readdir installdir arch [files...]
7 # readdir: dir to open files
8 # installdir: dir to install the files
9 # arch: current architecture
10 # arch is used to force a reinstallation when the arch
11 # changes because kbuild then detect a command line change.
12 # files: list of files to check
14 # Step in preparation for users space:
15 # 1) Drop all use of compiler.h definitions
16 # 2) Drop include of compiler.h
17 # 3) Drop all sections defined out by __KERNEL__ (using unifdef)
21 my ($readdir, $installdir, $arch, @files) = @ARGV;
23 my $unifdef = "scripts/unifdef -U__KERNEL__";
25 foreach my $file (@files) {
28 my $tmpfile = "$installdir/$file.tmp";
29 open(INFILE
, "<$readdir/$file")
30 or die "$readdir/$file: $!\n";
31 open(OUTFILE
, ">$tmpfile") or die "$tmpfile: $!\n";
32 while (my $line = <INFILE
>) {
33 $line =~ s/([\s(])__user\s/$1/g;
34 $line =~ s/([\s(])__force\s/$1/g;
35 $line =~ s/([\s(])__iomem\s/$1/g;
36 $line =~ s/\s__attribute_const__\s/ /g;
37 $line =~ s/\s__attribute_const__$//g;
38 $line =~ s/^#include <linux\/compiler.h>//;
39 $line =~ s/(^|\s)(inline)\b/$1__$2__/g;
40 $line =~ s/(^|\s)(asm)\b(\s|[(]|$)/$1__$2__$3/g;
41 $line =~ s/(^|\s|[(])(volatile)\b(\s|[(]|$)/$1__$2__$3/g;
42 printf OUTFILE
"%s", $line;
46 system $unifdef . " $tmpfile > $installdir/$file";
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