kernel-source/mkspec

304 lines
6.9 KiB
Perl

#!/usr/bin/perl
use strict;
use warnings;
use File::Copy;
use Getopt::Long;
my $dir = ".";
my $rpmrelease = 0;
my $patches="";
GetOptions(
"patches=s" => \$patches,
"release=s" => \$rpmrelease
) or die "Usage: $0 [--release <release>] [--patches <dir>]\n";
# flavor -> [supported archs]
my %flavor_archs = parse_config_conf();
# subset to include in kernel-syms
my %syms_flavor_archs = parse_config_conf("syms");
# template name -> template body
my %templates = read_spec_templates();
# config.sh variables
my %vars = parse_config_sh();
my ($srcversion, $variant, $vanilla_only) =
($vars{'SRCVERSION'}, $vars{'VARIANT'}, $vars{'VANILLA_ONLY'});
$vanilla_only ||= "0";
# package name -> [summary, description]
my %binary_descriptions = parse_descriptions();
$patches="--patches $patches" if $patches;
my $patchversion = `$dir/compute-PATCHVERSION.sh $patches`;
chomp $patchversion;
my $rpmversion = $patchversion;
# stuff the -rcX tag into the rpm version if possible;
$rpmversion =~ s/\.0-rc/.rc/;
$rpmversion =~ s/-rc\d+//;
$rpmversion =~ s/-/./g;
$rpmrelease =~ s/-/./g;
my $sources = join("", $templates{source} =~ /\nSource\d+:[^\n]*/mg);
# Find all SourceN: foo.tar.bz2 lines and generate the NoSource:
# lines and the %setup line
my @tarballs = ($sources =~ /\nSource(\d+):[^\n]*\.tar\.bz2/mg);
my $nosource = join("\n", map { "NoSource: $_" } @tarballs);
# Source0 (the linux tarball) is unpacked manually
@tarballs = grep { $_ > 0 } @tarballs;
my $unpack_patches = join(" ", map { "-a $_" } @tarballs);
# List of scripts to automatically chmod +x before build
my $scripts = join(",", grep { is_script($_) }
($sources =~ /\nSource\d+:\s*([^\s]*)/mg));
my $tarball_url;
if ($srcversion =~ /^(\d+)(?:\.\d+)*(-rc\d+)?$/) {
$tarball_url = "http://www.kernel.org/pub/linux/kernel/v$1.x/";
$tarball_url .= "testing/" if $2;
} else {
# kernel.org has no tarballs for linux-next or vanilla snapshots
$tarball_url = "";
}
my %macros = (
VARIANT => $variant,
VANILLA_ONLY => $vanilla_only,
SRCVERSION => $srcversion,
PATCHVERSION => $patchversion,
RPMVERSION => $rpmversion,
TARBALL_URL => $tarball_url,
RELEASE => $rpmrelease,
SOURCES => $sources,
NOSOURCE => $nosource,
UNPACK_PATCHES => $unpack_patches,
SCRIPTS => $scripts,
YEAR => (localtime time)[5] + 1900,
);
# binary spec files
for my $flavor (sort keys(%flavor_archs)) {
my ($summary, $description);
if (!exists($binary_descriptions{"kernel-$flavor"})) {
print STDERR "warning: no description for kernel-$flavor found\n";
$summary = "The Linux Kernel";
$description = "The Linux Kernel.";
} else {
$summary = $binary_descriptions{"kernel-$flavor"}->[0];
$description = $binary_descriptions{"kernel-$flavor"}->[1];
}
do_spec('binary', "kernel-$flavor.spec", %macros,
FLAVOR => $flavor,
SUMMARY => $summary,
DESCRIPTION => $description,
ARCHS => join(" ", arch2rpm(@{$flavor_archs{$flavor}})),
PROVIDES_OBSOLETES => provides_obsoletes($flavor, @{$flavor_archs{$flavor}}),
);
}
# kernel-source.spec
do_spec('source', "kernel-source$variant.spec", %macros);
# kernel-docs.spec
do_spec('docs', "kernel-docs$variant.spec", %macros);
# kernel-syms.spec
{
my $requires = "";
my %all_archs;
for my $flavor (sort keys(%syms_flavor_archs)) {
next if $flavor eq "vanilla";
my @archs = arch2rpm(@{$syms_flavor_archs{$flavor}});
$all_archs{$_} = 1 for @archs;
$requires .= "%ifarch @archs\n";
$requires .= "Requires: kernel-$flavor-devel = \%version-\%source_rel\n";
$requires .= "%endif\n";
}
chomp $requires;
if (keys(%all_archs)) {
do_spec('syms', "kernel-syms$variant.spec", %macros,
REQUIRES => $requires,
ARCHS => join(" ", sort(keys(%all_archs))));
}
}
exit 0;
sub parse_config_conf {
my @symbols = @_;
my $symbols = join(' ', @symbols);
my %res;
for my $arch (split(/\s+/, `$dir/arch-symbols --list`)) {
my @flavors = `$dir/guards $arch $symbols < $dir/config.conf`;
next if @flavors == 0;
chomp @flavors;
@flavors = map { s/.*\///; $_ } @flavors;
for my $flavor (@flavors) {
$res{$flavor} ||= [];
push(@{$res{$flavor}}, $arch);
}
}
for my $flavor (keys(%res)) {
$res{$flavor} = [sort @{$res{$flavor}}];
}
return %res;
}
sub read_spec_templates {
my %res;
for my $template (qw(binary source syms docs)) {
xopen(my $fh, '<', "$dir/kernel-$template.spec.in");
local $/ = undef;
$res{$template} = <$fh>;
close($fh);
}
return %res;
}
# return a hash of config.sh variables
sub parse_config_sh {
my %res;
xopen(my $fh, '<', "$dir/config.sh");
while (<$fh>) {
chomp;
if (/^\s*([A-Z_]+)=(.*)/) {
$res{$1} = $2;
}
}
close($fh);
return %res;
}
sub parse_descriptions {
my %res;
my $current;
my $blank = "";
# 0 - expect summary, 1 - eating blank lines, 2 - reading description
my $state = 0;
xopen(my $fh, '<', "$dir/package-descriptions");
while (<$fh>) {
next if /^\s*#/;
if (/^==+\s+([^\s]+)\s+==+\s*$/) {
my $package = $1;
if ($current) {
chomp $current->[1];
}
$current = ["", ""];
$res{$package} = $current;
$state = 0;
next;
}
if (/^$/) {
if ($state == 2) {
$blank .= $_;
}
next;
}
# non-blank line and not === package ===
if ($state == 0) {
chomp;
$current->[0] = $_;
$state = 1;
} elsif ($state == 1) {
$current->[1] = $_;
$blank = "";
$state = 2;
} else {
$current->[1] .= $blank;
$blank = "";
$current->[1] .= $_;
}
}
if ($current) {
chomp $current->[1];
}
close($fh);
return %res;
}
sub is_script {
my $script = shift;
return undef if $script =~ /\.(tar\.(gz|bz2)|in|conf)$/;
return undef if $script =~ /^README/;
return 1 if $script =~ /\.pl$/;
open(my $fh, '<', $script) or return undef;
sysread($fh, my $shebang, 2);
close($fh);
return 1 if $shebang eq "#!";
return undef;
}
sub arch2rpm {
if (wantarray) {
return map { _arch2rpm($_) } @_;
}
return _arch2rpm($_[0]);
}
sub _arch2rpm {
my $arch = shift;
return "\%ix86" if $arch eq "i386";
return "aarch64" if $arch eq "arm64";
return $arch;
}
sub provides_obsoletes {
my $flavor = shift;
my @archs = @_;
my $res = "";
for my $arch (@archs) {
my @packs = `$dir/guards $arch $flavor <$dir/old-packages.conf`;
chomp @packs;
next if (!@packs);
my $rpmarch = arch2rpm($arch);
chomp $rpmarch;
$res .= "\%ifarch $rpmarch\n";
$res .= "Provides: @packs\n";
$res .= "Obsoletes: @packs\n";
$res .= "\%endif\n";
}
chomp $res;
return $res;
}
sub do_spec {
my $template = shift;
my $specfile = shift;
my %macros = @_;
my $text = $templates{$template};
my $prev_text;
do {
$prev_text = $text;
for my $m (keys %macros) {
$text =~ s/\@$m\@/$macros{$m}/g;
}
} while ($prev_text ne $text);
print "$specfile\n";
xopen(my $fh, '>', "$dir/$specfile");
print $fh $text;
close($fh);
return if $specfile eq "kernel-source$variant.spec";
my $changesfile = $specfile;
$changesfile =~ s/\.spec$//;
$changesfile .= ".changes";
copy("$dir/kernel-source$variant.changes", $changesfile);
}
sub xopen {
open($_[0], $_[1], $_[2]) or die "$_[2]: $!\n";
}