External library on Mac OS X

[giann]

I'm trying to load lrexlib into love. I put the rex_posix.so in the same folder as the main.lua.
When I launch the game I get:

Code: Select all

  Referenced from: ./rex_posix.so
  Expected in: dynamic lookup

stack traceback:
	[C]: at 0x7fff04caa140
	[C]: in function 'require'
	main.lua:2: in function 'load'
	[string "boot.lua"]:418: in function <[string "boot.lua"]:413>
	[C]: in function 'xpcall'

Any idea why ?

[Positive07]

Basically your .so is not in the search directory, LÖVE expects to find binary modules in two locations, the AppData folder, or next to the love binary (I'm not sure how this is done in MacOSX, you may need to open the love.app and find the correct location, not sure)

[Positive07]

Basically your .so is not in the search directory, LÖVE expects to find binary modules in two locations, the Save Directory folder, or next to the love binary (I'm not sure how this is done in MacOSX, you may need to open the love.app and find the correct location, not sure)

So you could do:

Code: Select all

love.load = function ()
    if not love.filesystem.isFile("rex_posix.so") then
         --Note that I moved the file to a folder called lib next to your main.lua
         local orig = love.filesystem.newFile("lib/rex_posix.so", "r") 
         local copy = love.filesystem.newFile("rex_posix.so", "w")

         copy:write(orig:read())
    end
end

[giann]

I don't think it is the problem here, since I launched loved whith the --fused option.

This is the error I get if the .so is not found:

Code: Select all

Error: main.lua:2: module 'rex_posix' not found:
	no field package.preload['rex_posix']
	no file 'rex_posix.lua' in LOVE game directories.
	no file 'rex_posix/init.lua' in LOVE game directories.
	no file 'rex_posix.so' in LOVE paths.
	no file './rex_posix.lua'
	no file '/usr/local/share/luajit-2.0.3/rex_posix.lua'
	no file '/usr/local/share/lua/5.1/rex_posix.lua'
	no file '/usr/local/share/lua/5.1/rex_posix/init.lua'
	no file './rex_posix.so'
	no file '/usr/local/lib/lua/5.1/rex_posix.so'
	no file '/usr/local/lib/lua/5.1/loadall.so'
stack traceback:
	[C]: in function 'require'
	main.lua:2: in function 'load'
	[string "boot.lua"]:418: in function <[string "boot.lua"]:413>
	[C]: in function 'xpcall'

And the error I get otherwise (I didn't paste the whole error earlier):

Code: Select all

Error: error loading module 'lib/rex_posix' from file './lib/rex_posix.so':
	dlopen(./lib/rex_posix.so, 6): Symbol not found: _luaL_len
  Referenced from: ./lib/rex_posix.so
  Expected in: dynamic lookup

stack traceback:
	[C]: at 0x7fff04caa140
	[C]: in function 'require'
	main.lua:2: in function 'load'
	[string "boot.lua"]:418: in function <[string "boot.lua"]:413>
	[C]: in function 'xpcall'

Note that if I launch the lua interpreter and require('lib/rex_posix'), it works.

[bartbes]

And only now did you finally post the full error, leading to a very clear solution. This library you're using is not compatible with lua 5.1/luajit. Note that this doesn't mean it can't be compiled to be compatible, it just isn't right now.

[giann]

And only now did you finally post the full error, leading to a very clear solution. This library you're using is not compatible with lua 5.1/luajit. Note that this doesn't mean it can't be compiled to be compatible, it just isn't right now.

Yeah sorry, I messed up the copy-past in my first post