diff -rupN qgis-2.18.25/cmake/PyQtMacros.cmake qgis-2.18.25-new/cmake/PyQtMacros.cmake
--- qgis-2.18.25/cmake/PyQtMacros.cmake	2018-10-26 13:59:08.000000000 +0200
+++ qgis-2.18.25-new/cmake/PyQtMacros.cmake	2018-11-14 00:15:36.247074662 +0100
@@ -42,7 +42,7 @@ MACRO(PYQT_WRAP_UI outfiles )
   ELSE(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(WIN32)
 
   FOREACH(it ${ARGN})