diff -Naru a/cmake/PyQtMacros.cmake b/cmake/PyQtMacros.cmake
--- a/cmake/PyQtMacros.cmake	2019-10-28 08:23:18.776024266 +0100
+++ b/cmake/PyQtMacros.cmake	2019-10-28 08:24:17.316024213 +0100
@@ -36,7 +36,7 @@
   ELSE(CMAKE_HOST_WIN32)
     # TODO osx
     SET(PYUIC_WRAPPER "${CMAKE_SOURCE_DIR}/scripts/pyuic-wrapper.sh")
-    SET(PYUIC_WRAPPER_PATH "${QGIS_OUTPUT_DIRECTORY}/lib")
+    SET(PYUIC_WRAPPER_PATH "${QGIS_OUTPUT_DIRECTORY}/lib${LIB_SUFFIX}")
   ENDIF(CMAKE_HOST_WIN32)
 
   FOREACH(it ${ARGN})