我正在尝试使用 CMake 在 Ubuntu 12.04.3 LTS 上编译 Minetest 0.4.10，但出现此错误：
andrew@rasts-tv:~$ cmake \Minetest-0.4.10
-- *** Will build version 0.4.10 ***
-- IRRLICHT_SOURCE_DIR =
-- IRRLICHT_INCLUDE_DIR = IRRLICHT_INCLUDE_DIR-NOTFOUND
-- IRRLICHT_LIBRARY = IRRLICHT_LIBRARY-NOTFOUND
-- Could NOT find IRRLICHT (missing: IRRLICHT_LIBRARY IRRLICHT_INCLUDE_DIR)
-- CURL_INCLUDE_DIR = CURL_INCLUDE_DIR-NOTFOUND
-- CURL_LIBRARY = CURL_LIBRARY-NOTFOUND
-- CURL_DLL =
-- GetText disabled
CMake Error at /usr/share/cmake-2.8/Modules/FindX11.cmake:411 (MESSAGE):
Could not find X11
Call Stack (most recent call first):
src/CMakeLists.txt:147 (find_package)
-- Configuring incomplete, errors occurred!
我安装了 LXDE（轻量级 X11 桌面环境），但它仍然显示相同的错误。我该怎么办？
这是我在安装 x11 …