1.官网下载源码压缩包。版本建议最新，我这里的版本是1.3.8

2. 终端输入：sudo apt-get install build-essential xorg-dev libx11-dev libcairo2-dev

//此步骤必要！！！安装依赖库，不然后面安装总会出错！！！

3.挤压文件： tar -xvf fltk .tar.gz

4.进入源文件：cd fltk-1.3.8/

5.修改先关配置，比如我需要OpenGL支持，默认的是不支持，我就改成支持。按照你们的需要修改即可。修改方式为：./configure + options

./configure --enable-debug --enable-gl --enable-shared --enable-threads --enable-xdbe --enable-xft

相关参数有：

--enable-cygwin

                Enable the Cygwin libraries under WIN32

--enable-debug

                Enable debugging code & symbols

--disable-gl

                Disable OpenGL support

--enable-shared

                Enable generation of shared libraries

--enable-threads

                Enable multithreading support

--enable-xdbe

                Enable the X double-buffer extension

--enable-xft

                Enable the Xft library for anti-aliased fonts under X11

--bindir=/path

                Set the location for executables [default = $prefix/bin]

--datadir=/path

                Set the location for data files. [default = $prefix/share]

--libdir=/path

                Set the location for libraries [default = $prefix/lib]

--includedir=/path

                Set the location for include files. [default = $prefix/include]

--mandir=/path

                Set the location for man pages. [default = $prefix/man]

--prefix=/dir

                Set the directory prefix for files [default = /usr/local]

6.make

7.安装：sudo make install

8.测试安装是否成功：

1.vim hello.cpp

hello.cpp的代码为：

#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Box.H>
int main(int argc, char **argv) {Fl_Window *window = new Fl_Window(340,180);Fl_Box *box = new Fl_Box(20,40,300,100,"Hello, World!");box->box(FL_UP_BOX);box->labelfont(FL_BOLD+FL_ITALIC);box->labelsize(36);box->labeltype(FL_SHADOW_LABEL);window->end();window->show(argc, argv);return Fl::run();
}

2.编译：fltk-config --compile hello.cpp

3.运行：./hello

**over** 

参考文章：1 - Introduction to FLTK