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#!/usr/bin/perl
# Copyright © 2022 Felix Lechner <felix.lechner@lease-up.com>
#
# based on a shell script by the same name
# by Marco Túlio Gontijo e Silva <marcot@debian.org>
# and Joachim Breitner <nomeata@debian.org>
# which in turn was based on
# mk-haskell-depends by Martin Sjögren <sjogren@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
use v5.20;
use warnings;
use utf8;
use Const::Fast;
use Path::Tiny;
use Unicode::UTF8 qw(encode_utf8 decode_utf8);
use Debian::Debhelper::Buildsystem::Haskell::Recipes qw(
run
installable_hc
hc_pkgdir
ghc_pkg_command
load_ghc_database
);
use Debian::Debhelper::Dh_Lib;
const my $SPACE => q{ };
const my $NEWLINE => qq{\n};
init();
my $ghc_pkg = ghc_pkg_command();
for my $installable (@{ $dh{DOPACKAGES} }) {
my $compiler = installable_hc($installable) || $ENV{DEB_DEFAULT_COMPILER};
my $pkgdir = hc_pkgdir($compiler);
my $confdir = "debian/$installable/$pkgdir";
my @configs;
@configs = grep { $_->is_file } path($confdir)->children(qr{ [.]conf $}x)
if -e $confdir;
load_ghc_database($ghc_pkg, $ENV{DEB_GHC_DATABASE}, @configs);
my @gcc_args;
my @hashed_ids = map { path($_)->basename(qr{ [.]conf $}x) } @configs;
for my $hashed_id (@hashed_ids) {
my $libdir_string = decode_utf8(
run(
$ghc_pkg, '--package-db',
$ENV{DEB_GHC_DATABASE}, qw{--simple-output field},
$hashed_id, 'library-dirs'
));
my @lib_dirs = split($SPACE, $libdir_string);
push(@gcc_args, (map { "-L$_" } @lib_dirs));
my $library_string = decode_utf8(
run(
$ghc_pkg, '--package-db',
$ENV{DEB_GHC_DATABASE}, qw{--simple-output field},
$hashed_id, 'extra-libraries'
));
my @libraries = split($SPACE, $library_string);
push(@gcc_args, (map { "-l$_" } @libraries));
}
my $T_DIR = 'debian/dh_haskell_shlibdeps';
path($T_DIR)->mkpath;
my $source_path = "$T_DIR/probe.c";
my $probe_path = "$T_DIR/probe";
path($source_path)->spew_utf8('int main (void) {}');
my @gcc_args_bytes = map { encode_utf8($_) } @gcc_args;
run('gcc', @gcc_args_bytes, $source_path, '-o', $probe_path);
my $substvars_path = "debian/$installable.substvars";
run(qw{dpkg-shlibdeps --warnings=1}, "-T$substvars_path", $probe_path);
path($T_DIR)->remove_tree;
}
exit;
=head1 NAME
dh_haskell_shlibdeps - calculates external dependencies for Haskell libraries
=encoding utf8
=head1 SYNOPSIS
B<dh_haskell_depends> [S<I<debhelper options>>]
=head1 DESCRIPTION
dh_haskell_shlibdeps is a debhelper program that helps with calculating
external dependencies for building Haskell libraries.
It automates building libraries for the different supported Haskell systems in
Debian.
This script writes the debian/$package.substvars file, including in it the
shlibs:Depends variable. So, to use this package, include in the Depends:
field in debian/control ${shlibs:Depends}.
=head1 BUGS
hugs and ghc are the only supported targets at the moment. Cabal does
not yet support nhc98.
=head1 SEE ALSO
L<debhelper(7)>
=head1 AUTHOR
Marco Túlio Gontijo e Silva <marcot@debian.org>
Based on ideas in mk-haskell-depends by Martin Sjögren <sjogren@debian.org>
=cut
# Local Variables:
# indent-tabs-mode: nil
# cperl-indent-level: 4
# End:
# vim: syntax=perl sw=4 sts=4 sr et
|
