Source: ifupdown Version: 0.7.48.2 Severity: wishlist Tags: patch User: reproducible-bui...@lists.alioth.debian.org Usertags: randomness
Hi! As part of the “reproducible builds” effort, we have detected that `ifupdown` did not build reproducibly. This is caused by the fact that Perl orders its hashes randomly by default. This, in turn, results in a random order in which the methods are written when generating C code. Resulting in different binaries for each builds. The attached patch will sort the methods to produce a stable order. `ifupdown` can then build reproducibly. :) [1]: https://wiki.debian.org/ReproducibleBuilds -- Lunar .''`. lu...@debian.org : :Ⓐ : # apt-get install anarchism `. `'` `-
diff -Nru ifupdown-0.7.48.1/debian/changelog ifupdown-0.7.48.2~reproducible1/debian/changelog
--- ifupdown-0.7.48.1/debian/changelog 2014-03-23 17:50:11.000000000 +0000
+++ ifupdown-0.7.48.2~reproducible1/debian/changelog 2014-09-21 18:20:37.000000000 +0000
@@ -1,3 +1,10 @@
+ifupdown (0.7.48.2~reproducible1) UNRELEASED; urgency=low
+
+ * Output methods in stable order when generating C code to make
+ builds reproducible.
+
+ -- Jérémy Bobbio <lu...@debian.org> Sun, 21 Sep 2014 18:19:56 +0000
+
ifupdown (0.7.48.1) unstable; urgency=low
* Add --ignore-errors option.
diff -Nru ifupdown-0.7.48.1/defn2c.pl ifupdown-0.7.48.2~reproducible1/defn2c.pl
--- ifupdown-0.7.48.1/defn2c.pl 2014-03-23 17:27:30.000000000 +0000
+++ ifupdown-0.7.48.2~reproducible1/defn2c.pl 2014-09-21 18:18:00.000000000 +0000
@@ -211,7 +211,7 @@
print "static method methods[] = {\n";
%ourmethods = %methods if (our_arch());
my $method;
-foreach $method (keys %ourmethods) {
+foreach $method (sort keys %ourmethods) {
print <<EOF;
{
"$method",
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