diff -urp mathgl-2.4.1/lang/CMakeLists.txt mathgl-2.4.1-nooctaveinstall/lang/CMakeLists.txt
--- mathgl-2.4.1/lang/CMakeLists.txt	2017-12-05 11:57:45.607214992 +0700
+++ mathgl-2.4.1-nooctaveinstall/lang/CMakeLists.txt	2017-12-05 11:59:48.869607674 +0700
@@ -84,11 +84,6 @@ message(STATUS "${oct_prog} ${oct_host}
 	add_custom_target(mgl_octave_module ALL DEPENDS mathgl.tar.gz)
 
 	install(FILES ${CMAKE_BINARY_DIR}/lang/mathgl.tar.gz DESTINATION ${MGL_DATA_PATH})
-	if(enable-octave-install)
-		install(CODE "execute_process(
-			COMMAND ${oct_exec} -q --eval \"pkg install mathgl.tar.gz\"
-			WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/lang )")
-	endif(enable-octave-install)
 	set(mgl_clean_files ${mgl_clean_files} mathgl)
 endif(enable-octave)