Proper way to statically link libraries.
- From: Tim Caswell <tim@xxxxxxxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Wed, 19 Sep 2012 18:03:52 -0500
I'm trying to make a simple binary that statically linked in luajit
and glfw3. I then want to use ffi to call the glfw3 apis.
My program is very simple:
#include <stdio.h>
#include <stdlib.h>
#include "lua.h"
#include "lauxlib.h"
#define GLFW_INCLUDE_GLU
#include "GL/glfw3.h"
int main(int argc, char* argv[]) {
glfwInit();
printf("%p\n", glfwInit);
lua_State* L = luaL_newstate();
luaL_openlibs(L);
if (argc < 2) {
fprintf(stderr, "Please enter script to execute\n");
return 1;
}
if (luaL_loadfile(L, argv[1])) {
fprintf(stderr, "Couldn't load file: %s\n", lua_tostring(L, -1));
return 1;
}
if (lua_pcall(L, 0, LUA_MULTRET, 0)) {
fprintf(stderr, "Failed to run script: %s\n", lua_tostring(L, -1));
return 1;
}
lua_close(L);
return 0;
}
It compiles just fine. This is my makefile:
app: app.o luajit/src/libluajit.a glfw/src/libglfw3.a
$(CC) -g app.o luajit/src/libluajit.a glfw/src/libglfw3.a -lX11
-lGL -lglut -lGLU -lXrandr -lm -ldl -o app
app.o: app.c
$(CC) -g -c app.c -Iglfw/include -Ilibuv/include -Iluajit/src
luajit/src/luajit.a:
$(MAKE) -C luajit
glfw/src/libglfw3.a: glfw/Makefile
$(MAKE) -C glfw src/libglfw3.a
glfw/Makefile:
cmake glfw
Then my lua script is:
local ffi = require('ffi')
ffi.cdef[[
int glfwInit(void);
]]
ffi.C.glfwInit()
It throws a runtime exception saying "undefined symbol: glfwInit". I
have no idea what I'm doing wrong. The symbol is clearly there. If I
check the binary with the nm utility, it's there marked in a "T"
section.
Can someone shed some light on this issue?
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