CODEWITHSUNDEEP
visual-studio-2015cmakelua
Meldryt
Meldryt

Reputation: 119

set lua default search path correctly to find required lua module

I have a visual studio project with c++ code calling lua files.

I try to load a lua module but it cannot be find. If understand correctly, package.path can be set i.a. via LUA_PATH environment variable. So before running the lua file i call a script with the lines to set the path to the parent folder of the lua module:

set LUA_PATH=%LUA_PATH%;C:\Users\xyz\lua

Then in the lua file i try to concat the search path with strings, but doesnt work:

package.path = package.path .. "./?.lua;"

edit: output of print(package.path):

;C:\Users\xyz\lua;./?.lua;

but i want 

;C:\Users\xyz\lua\?.lua;

edit: I forgot to the delete the semicolon at the end of LUA_PATH. Now it works without the package.path line.

Upvotes: 1

Views: 8925

Answers (1)

Ted Lyngmo
Ted Lyngmo

Reputation: 118097

set LUA_PATH=%LUA_PATH%;C:\Users\xyz\lua

That adds a ; infront of C:\Users\xyz\lua unless LUA_PATH already contains something. You might want something like this instead:

IF DEFINED LUA_PATH (
    set LUA_PATH=%LUA_PATH%;
)
set LUA_PATH=%LUA_PATH%C:\Users\xyz\lua

package.path = package.path .. "./?.lua;"

That adds a ; at the end and also adds ./ where you probably want \ so try this instead:

package.path = package.path .. "\\?.lua"

Upvotes: 1

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