In my ubuntu 14.xx, I try to compile lsnes emulator to use the mario-ai script from aleju/mario-ai, and I've tried to google many solutions to solve the problem below:

Here is the output from the console:

make[3]: __all__.files' is up to date. make[3]: Leaving directory/home/pengsuyu/software/lsnes/sourcecode/src/platform/macosx' make[2]: Leaving directory /home/pengsuyu/software/lsnes/sourcecode/src/platform' g++ -o lsnescat all_common.files all_platform.files-pthread -lboost_iostreams -lboost_filesystem -lboost_system -lz -lgcrypt -lgpg-error -L/usr/lib/x86_64-linux-gnu -lcurl -rdynamic -ldlcat core/all.ldflags lua/all.ldflags fonts/all.ldflags library/all.ldflags interface/all.ldflags video/all.ldflags emulation/all.ldflags cmdhelp/all.ldflags platform/all.ldflagscore/multitrack.o: In functionlua::state::get_string(int, std::string const&)': /home/pengsuyu/software/lsnes/sourcecode/src/core/../../include/library/lua-base.hpp:317: undefined reference to lua_tolstring' core/multitrack.o: In functionlua::state::get_bool(int, std::string const&)': /home/pengsuyu/software/lsnes/sourcecode/src/core/../../include/library/lua-base.hpp:334: undefined reference to lua_toboolean' core/multitrack.o: In functionlua::state::type(int)': . . /home/pengsuyu/software/lsnes/sourcecode/src/library/lua.cpp:536: undefined reference to lua_close' library/lua.o: In functionlua::state::pushcfunction(int ()(lua_State))': /home/pengsuyu/software/lsnes/sourcecode/src/library/../../include/library/lua-base.hpp:504: undefined reference to lua_pushcclosure' library/lua.o: In functionlua::state::getfield(int, char const*)': /home/pengsuyu/software/lsnes/sourcecode/src/library/../../include/library/lua-base.hpp:506: undefined reference to lua_getfield' library/lua.o: In functionlua::state::insert(int)': /home/pengsuyu/software/lsnes/sourcecode/src/library/../../include/library/lua-base.hpp:509: undefined reference to lua_insert' collect2: error: ld returned 1 exit status make[1]: *** [lsnes] Error 1 make[1]: Leaving directory/home/pengsuyu/software/lsnes/sourcecode/src' make: *** [src/all_files] Error 2

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At the beginning, I think, the linker cannot find my lua library. So I tried to compile my main.cpp with test.lua.

main.cpp:

#include <stdio.h>
#include <iostream>

//extern "C"
//{
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
//} // liblua5.1-c++.a 
lua_State * L;
int main ()
{
     L = lua_open();
     luaL_openlibs(L);
     luaL_dofile(L, "d:\\test.lua");
     return 0;
}

test.lua:

print("Hello World");

I write a MakeFile to generate the executable file "main":

main:main.o
    gcc -o $@ $< -llua5.1 -lstdc++
main.o:
    gcc -c main.cpp
clean:
    -rm *.o

It works when I add the compile option "-llua5.1" and "-lstdc++" otherwise it throws the same error as I compiled lsnes

I am not familiar with gcc and Makefile. Please help me to solve this problem.

I've solved my question

The way to solve this problem is just to change one line in the file named "options.build".

1. find the line "LUA=lua" in options.build

2. change this line to "LUA=lua5.1"

because the needed library is 5.1, so if you want to build it successfully, you must use the "lua5.1" library however the default configuration is "lua" not "lua5.1"