Lua的编译和安装

Lua很小巧。

一下是摘自Lua官方网站的编译步骤：

curl -R -O http://www.lua.org/ftp/lua-5.2.3.tar.gz
tar zxf lua-5.2.3.tar.gz
cd lua-5.2.3
make linux
make test

其中

• 源代码文件包大小 251 KB
• 编译后的lua执行程序 227 KB
• "liblua.a"库文件：385KB

问题

按照上面的步骤编译链接过程中碰到下面的错误：

shell> gcc -o lua lua.o liblua.a -lm -Wl,-E -ldl -lreadline

/usr/lib64/libreadline.so: undefined reference to `PC'
/usr/lib64/libreadline.so: undefined reference to `tgetflag'
/usr/lib64/libreadline.so: undefined reference to `tgetent'
/usr/lib64/libreadline.so: undefined reference to `UP'
/usr/lib64/libreadline.so: undefined reference to `tputs'
/usr/lib64/libreadline.so: undefined reference to `tgoto'
/usr/lib64/libreadline.so: undefined reference to `tgetnum'
/usr/lib64/libreadline.so: undefined reference to `BC'
/usr/lib64/libreadline.so: undefined reference to `tgetstr'
collect2: ld returned 1 exit status

解决办法是添加-lncurses选项，即：

gcc -o lua lua.o liblua.a -lm -Wl,-E -ldl -lreadline -lncurses

ncurses(new curses)是一个用于编写基于终端（命令行）的程序的库，是GNU项目之一。(https://www.gnu.org/software/ncurses/)