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#!/usr/bin/env perl
use warnings;
use strict;
use Cwd;
use File::Path 'rmtree';
use File::Basename;
my %required_tag;
my $validate;
my $curdir;
$required_tag{"-"} = 1;
$validate = 0;
$curdir = &cwd()
or die "Can't find current directory: $!";
while ($#ARGV ne -1) {
my $arg = shift @ARGV;
if ($arg =~ /^--required-tag=(.*)/) {
$required_tag{$1} = 1;
}
elsif ($arg =~ /^--validate$/) {
$validate = 1;
}
else {
die "Bad arg: $arg";
}
}
sub sanity_check_line_endings {
local $/ = undef;
open FILE, "packages" or die "Couldn't open file: $!";
binmode FILE;
my $string = <FILE>;
close FILE;
if ($string =~ /\r/) {
print STDERR <<EOF;
Found ^M in packages.
Perhaps you need to run
git config --global core.autocrlf false
and re-check out the tree?
EOF
exit 1;
}
}
sub sanity_check_tree {
my $tag;
my $dir;
# Check that we have all boot packages.
open PACKAGES, "< packages";
while (<PACKAGES>) {
if (/^#/) {
# Comment; do nothing
}
elsif (/^([a-zA-Z0-9\/.-]+) +([^ ]+) +[^ ]+ +[^ ]+$/) {
$dir = $1;
$tag = $2;
# If $tag is not "-" then it is an optional repository, so its
# absence isn't an error.
if (defined($required_tag{$tag})) {
# We would like to just check for a .git directory here,
# but in an lndir tree we avoid making .git directories,
# so it doesn't exist. We therefore require that every repo
# has a LICENSE file instead.
if (! -f "$dir/LICENSE") {
print STDERR "Error: $dir/LICENSE doesn't exist.\n";
die "Maybe you haven't done 'git submodule update --init'?";
}
}
}
else {
die "Bad line in packages file: $_";
}
}
close PACKAGES;
}
# Create libraries/*/{ghc.mk,GNUmakefile}
sub boot_pkgs {
my @library_dirs = ();
my $package;
for $package (glob "libraries/*/") {
$package =~ s/\/$//;
my $pkgs = "$package/ghc-packages";
if (-f $pkgs) {
open PKGS, "< $pkgs"
or die "Failed to open $pkgs: $!";
while (<PKGS>) {
chomp;
s/\r//g;
if (/.+/) {
push @library_dirs, "$package/$_";
}
}
}
else {
push @library_dirs, $package;
}
}
for $package (@library_dirs) {
my $dir = &basename($package);
my @cabals = glob("$package/*.cabal");
if ($#cabals > 0) {
die "Too many .cabal file in $package\n";
}
if ($#cabals eq 0) {
my $cabal = $cabals[0];
my $pkg;
my $top;
if (-f $cabal) {
$pkg = $cabal;
$pkg =~ s#.*/##;
$pkg =~ s/\.cabal$//;
$top = $package;
$top =~ s#[^/]+#..#g;
$dir = $package;
$dir =~ s#^libraries/##g;
print "Creating $package/ghc.mk\n";
open GHCMK, "> $package/ghc.mk"
or die "Opening $package/ghc.mk failed: $!";
print GHCMK "${package}_PACKAGE = ${pkg}\n";
print GHCMK "${package}_dist-install_GROUP = libraries\n";
print GHCMK "\$(if \$(filter ${dir},\$(PACKAGES_STAGE0)),\$(eval \$(call build-package,${package},dist-boot,0)))\n";
print GHCMK "\$(if \$(filter ${dir},\$(PACKAGES_STAGE1)),\$(eval \$(call build-package,${package},dist-install,1)))\n";
print GHCMK "\$(if \$(filter ${dir},\$(PACKAGES_STAGE2)),\$(eval \$(call build-package,${package},dist-install,2)))\n";
close GHCMK
or die "Closing $package/ghc.mk failed: $!";
print "Creating $package/GNUmakefile\n";
open GNUMAKEFILE, "> $package/GNUmakefile"
or die "Opening $package/GNUmakefile failed: $!";
print GNUMAKEFILE "dir = ${package}\n";
print GNUMAKEFILE "TOP = ${top}\n";
print GNUMAKEFILE "include \$(TOP)/mk/sub-makefile.mk\n";
print GNUMAKEFILE "FAST_MAKE_OPTS += stage=0\n";
close GNUMAKEFILE
or die "Closing $package/GNUmakefile failed: $!";
}
}
}
}
# autoreconf everything that needs it.
sub autoreconf {
my $dir;
my $fail;
foreach $dir (".", glob("libraries/*/")) {
if (-f "$dir/configure.ac") {
next if (my $pid = fork);
die "fork failed: $!" if (! defined $pid);
print "Booting $dir\n";
chdir $dir or die "can't change to $dir: $!";
exec("autoreconf");
exit 1;
}
}
# Wait for all child processes to finish.
while (wait() != -1) {
$fail = 1 if $?;
}
die "Running autoreconf failed" if $fail;
}
sub checkBuildMk {
if ($validate eq 0 && ! -f "mk/build.mk") {
print <<EOF;
WARNING: You don't have a mk/build.mk file.
By default a standard GHC build will be done, which uses optimisation
and builds the profiling libraries. This will take a long time, so may
not be what you want if you are developing GHC or the libraries, rather
than simply building it to use it.
For information on creating a mk/build.mk file, please see:
http://ghc.haskell.org/trac/ghc/wiki/Building/Using#Buildconfiguration
EOF
}
}
&sanity_check_line_endings();
&sanity_check_tree();
&boot_pkgs();
&autoreconf();
&checkBuildMk();
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