--- src/qmaptool/CMakeLists.txt.orig	2020-03-27 08:07:31 UTC
+++ src/qmaptool/CMakeLists.txt
@@ -254,7 +254,7 @@ target_link_libraries(${APPLICATION_NAME}
     Qt5::Network
     Qt5::Help
     ${GDAL_LIBRARIES}
-    ${PROJ4_LIBRARIES}
+    ${PROJ4_LDFLAGS} ${PROJ4_LIBRARIES}
 )
 
 if(APPLE)