diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1a085b2b..aacdb296 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -216,21 +216,23 @@ endif()
 if (UNIX AND NOT APPLE)
     find_library(RT_LIBRARY rt)
     mark_as_advanced(RT_LIBRARY)
-    if (RT_LIBRARY)
+    if (NOT RT_LIBRARY STREQUAL "RT_LIBRARY-NOTFOUND")
         target_link_libraries(glfw PRIVATE "${RT_LIBRARY}")
         list(APPEND glfw_PKG_LIBS "-lrt")
     endif()
 
     find_library(MATH_LIBRARY m)
     mark_as_advanced(MATH_LIBRARY)
-    if (MATH_LIBRARY)
+    if (NOT MATH_LIBRARY STREQUAL "MATH_LIBRARY-NOTFOUND")
         target_link_libraries(glfw PRIVATE "${MATH_LIBRARY}")
         list(APPEND glfw_PKG_LIBS "-lm")
     endif()
 
-    if (CMAKE_DL_LIBS)
-        target_link_libraries(glfw PRIVATE "${CMAKE_DL_LIBS}")
-        list(APPEND glfw_PKG_LIBS "-l${CMAKE_DL_LIBS}")
+    find_library(DL_LIBRARY dl)
+    mark_as_advanced(DL_LIBRARY)
+    if (NOT DL_LIBRARY STREQUAL "DL_LIBRARY-NOTFOUND")
+        target_link_libraries(glfw PRIVATE "${DL_LIBRARY}")
+        list(APPEND glfw_PKG_LIBS "-ldl")
     endif()
 endif()