ldlibpth can exist but be unset.

p4raw-id: //depot/perl@12708

diff --git a/t/TEST b/t/TEST
index e2a5a97..84a39f0 100755 (executable)
--- a/t/TEST
+++ b/t/TEST
@@ -321,7 +321,7 @@ SHRDLU
    ### You may have to set your dynamic library search path,
    ### $p, to point to the build directory:
 SHRDLU
-           if (exists $ENV{$p}) {
+           if (exists $ENV{$p} && $ENV{$p} ne '') {
               warn <<SHRDLU;
    ###     setenv $p `pwd`:\$$p; cd t; ./perl harness
    ###     $p=`pwd`:\$$p; export $p; cd t; ./perl harness