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#!/usr/bin/perl
# Helper for debian/rules2.
# Exit silently during builds without Ada.
# If .ali (Ada Library Information) files are found in gnat RTS directory,
# output a dpkg-gencontrol command line argument setting the
# libgnat:Provides substitution variable
# to the XOR of the checksums in all such files,
# as 8 lowercase hexadecimal digits.
# See https://people.debian.org/~lbrenta/debian-ada-policy.html.
# Should be in sync with dh_ada_library in the dh-ada-library package.
# perl -c $script
# perltidy $script -st | diff -u $script -
# perlcritic -1 --verbose=11 --exclude=Modules::RequireVersionVar $script
use autodie;
use re '/amsx';
use strict;
use warnings;
my @ali_files = glob 'build/gcc/ada/rts/*.ali';
if (@ali_files) {
my $result = 0;
for my $path (@ali_files) {
open my $fh, q{<}, $path;
while (<$fh>) {
if (m/ ^ D [ ] [^\t]+ \t+ \d{14} [ ] ( [[:xdigit:]]{8} ) /) {
$result ^= hex $1;
}
}
close $fh;
}
printf '-Vlibgnat:alihash=%08x', $result;
}
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