在Ubuntu编译程序时出现的错误，在安装日志上发现一句：x11/xlib.h nosuch file or directory 在网上查阅了资料，原来是x11M没有装。

解决方案：

先安装X11，命令为    sudo apt -get install libx11-dev

结果仍然出错如下：

checking for main in -lXbsd... no

checking for socket in -lsocket... no

checking for gethostbyname in -lnsl... yes

checking for dcgettext in -lintl... no

checking for getnodebyname in -ldnet_stub... no

checking that g++ can handle -O2... no

checking standard STL is available... no

checking for tcl.h... -I../include

checking for tclInt.h... -I../include

checking for libtcl8.4... -L../lib -ltcl8.4

checking for init.tcl... ../lib/tcl8.4

checking for http.tcl... ../lib/tcl8.4/http1.0

checking Tcl http.tcl library... yes

checking for tclsh8.4.11... no

checking for tclsh8.4... ../bin/tclsh8.4

checking for tk.h... -I../include

checking for libtk8.4... -L../lib -ltk8.4

checking for tk.tcl... ../lib/tk8.4

checking for X11 header files

can't find X includes

otcl-1.12 configuration failed! Exiting ...

Please check http://www.isi.edu/nsnam/ns/ns-problems.html

for common problems and bug fixes.

还是没有得到解决.分析了一下可能是x11没有安装完整，于是先输入:sudo apt-cache search x11-dev

linzchey@linzchey-laptop:~/CODES/$ sudo apt-cache search x11-dev

libgl1-mesa-swx11-dev - A free implementation of the OpenGL API -- development files

libghc6-x11-dev - Haskell X11 binding for GHC

libgtkglextmm-x11-dev - C++ wrapper for the OpenGL Extension to GTK (development files)

libx11-dev - X11 client-side library (development headers)

分别安装上面的组件，命令如下：

sudo apt-get install libx11-dev

sudo apt-get install libgtkglextmm-x11-dev

sudo apt-get install libghc6-x11-dev

sudo apt-get install libgl1-mesa-swx11-dev

或者在新得立中:搜索 －> 标记以安装 -> 应用, 即可。