diff '--color=auto' -ur xlockmore-5.84.orig/configure.ac xlockmore-5.84/configure.ac
--- xlockmore-5.84.orig/configure.ac	2025-10-01 20:09:57.510345733 +0200
+++ xlockmore-5.84/configure.ac	2025-10-01 20:11:44.614909233 +0200
@@ -5106,8 +5106,12 @@
     PIXMAPTYPE="linux"
 dnl if Shadow and not elf
 dnl XLOCKLIBS="${XLOCKLIBS} -lgdbm"
-    XLOCKLDFLAGS="-Wl,-R${XLOCK_LDFLAGS}"
-    XMLOCKLDFLAGS="-Wl,-R${XMLOCK_LDFLAGS}"
+    if test -n "${XLOCK_LDFLAGS}"; then
+        XLOCKLDFLAGS="-Wl,-R${XLOCK_LDFLAGS}"
+    fi
+    if test -n "${XMLOCK_LDFLAGS}"; then
+        XMLOCKLDFLAGS="-Wl,-R${XMLOCK_LDFLAGS}"
+    fi
   ;;
 
   *-*-cygwin* )