test: Check for both lld and ld error messages with nonexistent library.

test/dioscc/nonexistent-lib.sh

@@ -8,7 +8,8 @@ EOF
 
 not dioscc prog.c -lxxx 2>&1 | tee file.txt
 
-grep "unable to find library -lxxx" file.txt
-grep "lld failed, not linked" file.txt
+# lld | ld  error message
+egrep "unable to find library -lxxx|cannot find -lxxx" file.txt
+egrep "lld failed, not linked|failed to link, ld exited with exitcode" file.txt
 
 test ! -s a.out