diff -ruN VTK-8.0.1/GUISupport/Qt/PluginInstall.cmake.in VTK-8.0.1-patched/GUISupport/Qt/PluginInstall.cmake.in
--- VTK-8.0.1/GUISupport/Qt/PluginInstall.cmake.in	2017-08-30 15:55:05.000000000 -0500
+++ VTK-8.0.1-patched/GUISupport/Qt/PluginInstall.cmake.in	2017-10-06 18:20:24.746721343 -0500
@@ -3,12 +3,10 @@
 set(VTK_INSTALL_QT_DIR "@VTK_INSTALL_QT_DIR@")
 set(VTK_INSTALL_QT_PLUGIN_DIR "@VTK_INSTALL_QT_PLUGIN_DIR@")
 set(BUILDTYPE_SUFFIX)
-if (WIN32)
-  if (BUILD_TYPE STREQUAL "Debug")
-    set(BUILDTYPE_SUFFIX @CMAKE_DEBUG_POSTFIX@)
-  else ()
-    set(BUILDTYPE_SUFFIX @CMAKE_RELEASE_POSTFIX@)
-  endif ()
+if (BUILD_TYPE STREQUAL "Debug")
+  set(BUILDTYPE_SUFFIX @CMAKE_DEBUG_POSTFIX@)
+else ()
+  set(BUILDTYPE_SUFFIX @CMAKE_RELEASE_POSTFIX@)
 endif ()
 set(VTK_INSTALL_QT_PLUGIN_FILE "@CMAKE_SHARED_LIBRARY_PREFIX@QVTKWidgetPlugin${BUILDTYPE_SUFFIX}@CMAKE_SHARED_LIBRARY_SUFFIX@")
 set(VTK_CONFIGURATIONS "@CMAKE_CONFIGURATION_TYPES@")