Fixing compiling issues with magnet.c

Jan Kneschke maintains lighttpd and posted a simple FCGI for lua. This magnet.c should be easily compiled with

 gcc -Wall -O2 -g -o magnet magnet.c -llua5.1 -lfcgi -ldl -lm

This may not work if your lua-include is not in the path for compiling.

And you'll run into such error messages:

magnet.c:3:20: error: lualib.h: No such file or directory
magnet.c:4:21: error: lauxlib.h: No such file or directory
magnet.c:11: Error: expected »)« before »*« token
magnet.c:19: Error: expected »)« before »*« token
magnet.c:59: Error: expected »)« before »*« token

Since you may not be used to compiling, I think it might be good to post a reason for that and a solution.

The reason is, that lualib.h is not in include path. To add it specific folder for the compiling to the include path you may use the

-I /path/name/ parameter.

 gcc -Wall -O2 -g -o magnet magnet.c [strong]-I/usr/include/lua5.1/[/strong] -llua5.1 -lfcgi -ldl -lm
There are some distributions, where the -llua5.1 may not work and result in cannot find -llua5.1. In this cases try -llua instead.

Have fun compiling!

In lua, open source by
@ 19 Mar 2009, Comments at Reddit & Hackernews

Give something back

Were my blog posts useful to you? If you want to give back, support one of these charities, too!

Report hate in social media Campact e.V. With our technology and your help, we protect the oceans from plastic waste. Gesellschaft fur Freiheitsrechte e. V. The civil eye in the mediterranean

Recent Dev-Articles

Read recently

Recent Files