Unable to find Lua headers with find_package in cmake

Question

I'm trying to use CMake to build generate the make file for a project of mine that uses Lua. When I run make I get this error:

/path/to/my/project/luaudio/luaudio.c:1:17: fatal error: lua.h: No such file or directory

In the CMakeLists.txt file, I have the following lines, which I thought would do it, but apparently they're not enough:

find_package(Lua51 REQUIRED) 
set(Luaudio_INCLUDE_DIRS ${Luaudio_SOURCE_DIR} ${Lua51_INCLUDE_DIRS} PARENT_SCOPE)
include_directories(${Luaudio_INCLUDE_DIRS})

Lua51_Include_Dirs appears to be empty (attempting to run it though the message command doesn't print anything) so I suspect that it just can't find it. Do I need to specify where to look for Lua? I was under the impression that the whole point of find_package was that it would look in a set a predefined places so that I don't need to specify where it is specifically.

(This is on an Ubuntu machine and I do have the Lua packages installed.)

I am using `#include "lua.h"`. I have also tried `#include "lua/lua.h"` even though that's not what I should need to do. Neither worked. I did not try with `<>`, but if that makes a difference I will be extremely surprised. — Alex, Aug 26 '11 at 20:59
@Alex Using `#include "lua5.1/lua.h"` worked for me after installing `lua5.1-dev`. — Amir Ali Akbari, Mar 13 '15 at 07:17

score 16 · Answer 1 · answered May 26 '13 at 15:09

16

install lua bin:

sudo apt-get install lua5.1

install lua lib:

sudo apt-get install lua5.1-dev

answered May 26 '13 at 15:09

hustljian

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score 6 · Accepted Answer · answered Aug 26 '11 at 21:05

6

Exploring FindLua51.cmake from cmake 2.8 I found that it sets LUA_INCLUDE_DIR variable instead of Lua51_INCLUDE_DIRS. So cmake code should be

find_package(Lua51 REQUIRED) 
set(Luaudio_INCLUDE_DIRS ${Luaudio_SOURCE_DIR} ${LUA_INCLUDE_DIR} PARENT_SCOPE)
include_directories(${Luaudio_INCLUDE_DIRS})

answered Aug 26 '11 at 21:05

Andrey Kamaev

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Thanks, I'll try that. Where is the file `FindLua51.cmake` located? I had tried at one point to look it up, but couldn't could find it in a cursory search. Edit: Success! Thank you. – Alex Aug 26 '11 at 21:09
3

On linux it will be something like `/usr/share/cmake-2.8/Modules/FindLua51.cmake` – Andrey Kamaev Aug 26 '11 at 21:11

score 1 · Answer 3 · edited Jan 24 '23 at 01:55

1

for Ubuntu 14.04

sudo apt install lua5.2;
sudo apt install liblua5.2-dev;

edited Jan 24 '23 at 01:55

ipatch

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answered Feb 08 '17 at 04:51

Honghe.Wu

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Unable to find Lua headers with find_package in cmake

3 Answers3

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