On Thu, 6 Mar 2003, bestworldweb wrote: > gcc -o test main.c -L/usr/local/lib -llua -llualib Add -lm to the line, and the problem will go away. Lua math lib needs it. gcc -o test main.c -L/usr/local/lib -llua -llualib -lm Best regards, Diego. ps: Let's see if I am the first to answer this one.