document parallel builds

diff --git a/dh_builddeb b/dh_builddeb
index aa11c325dff545bc8bdf09223fae0088634fda2e..bf9fc27d39aafdfb2c42545cd5cd213158b42b30 100755 (executable)
--- a/dh_builddeb
+++ b/dh_builddeb
@@ -18,6 +18,9 @@ B<dh_builddeb> [S<I<debhelper options>>] [B<--destdir=>I<directory>] [B<--filena
 B<dh_builddeb> simply calls L<dpkg-deb(1)> to build a Debian package or
 packages.
 
+It supports building multiple binary packages in parallel, when enabled by
+DEB_BUILD_OPTIONS.
+
 =head1 OPTIONS
 
 =over 4