make: Avoid infinite loop that occurrs when testing existence of a target in a certian horribly broken makefile

by making the test stop after it sees one line of output from make. (This
may be better replaced with dh's makefile parser in the future.)

1 files changed, 1 insertions, 1 deletions

diff --git a/Debian/Debhelper/Buildsystem/makefile.pm b/Debian/Debhelper/Buildsystem/makefile.pm
index 083abc42..47814296 100644
--- a/Debian/Debhelper/Buildsystem/makefile.pm
+++ b/Debian/Debhelper/Buildsystem/makefile.pm
@@ -25,7 +25,7 @@ sub exists_make_target {
 
 	# Use make -n to check to see if the target would do
 	# anything. There's no good way to test if a target exists.
-	my $ret=`$makecmd -s -n --no-print-directory $target 2>/dev/null`;
+	my $ret=`$makecmd -s -n --no-print-directory $target 2>/dev/null | head -n 1`;
 	chomp $ret;
 	return length($ret);
 }