--- CMakeLists.txt 2013-12-27 17:25:13.937026671 +0700 +++ CMakeLists.txt-fltk-skip-fluid 2013-12-27 17:31:25.416802089 +0700 @@ -327,6 +327,7 @@ endif(enable-glut) if(enable-fltk) set(MGL_HAVE_FLTK 1) + set(FLTK_SKIP_FLUID 1) include(FindFLTK) if(NOT FLTK_FOUND) message(SEND_ERROR "Couldn't find FLTK library.")