dh_dwz: Skip multifile for udeb packages

Signed-off-by: Niels Thykier <niels@thykier.net>

2 files changed, 7 insertions, 1 deletions

diff --git a/debian/changelog b/debian/changelog
index 0f683d63..8d1d065c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -14,6 +14,8 @@ debhelper (12.2.5) UNRELEASED; urgency=medium
     but succeeds anyway by default.  The previous behaviour of
     insisting on a multifile can be obtained by explicitly passing
     --dwz-multifile.  (Closes: #933541)
+  * dh_dwz: Skip multifile generation for udeb packages.
+    (Closes: #933212)
 
  -- Niels Thykier <niels@thykier.net>  Sun, 21 Jul 2019 18:40:38 +0000
 
diff --git a/dh_dwz b/dh_dwz
index c5463a03..471930b9 100755
--- a/dh_dwz
+++ b/dh_dwz
@@ -49,6 +49,10 @@ please pass B<--no-dwz-multifile> to work around the issue.
 The generated multifile will be compressed with B<objcopy
 --compress-debug-sections>.
 
+Note for B<udeb> packages: B<dh_dwz> will never generate multifiles
+for B<udeb> packages.  It will still use B<dwz> to reduce the
+file size of debug files if it finds any.
+
 =item B<-X>I<item>, B<--exclude=>I<item>
 
 Exclude files that contain I<item> anywhere in their filename from being
@@ -120,7 +124,7 @@ for my $package (@{$dh{DOPACKAGES}}) {
 	# Consistent order;
 	@elf_files = sort(@elf_files);
 	my ($unique_files, $hardlinks) = find_hardlinks(@elf_files);
-	if ($create_multifile and @{$unique_files} > 1) {
+	if ($create_multifile and @{$unique_files} > 1 and not is_udeb($package)) {
 		my $objcopy = cross_command($package, 'objcopy');
 		my $ma_dir = dpkg_architecture_value('DEB_HOST_MULTIARCH');
 		my $dwz_dir = "usr/lib/debug/.dwz/${ma_dir}";