Getting CImg to work in XCode - c++

Question

Im attempting to get CImg (1.6.8) to work in XCode (7.2) running OSX 10.11.2
#include <iostream>
#include "CImg.h"
int main(int argc, const char * argv[])
{
std::cout << "Hello, World!\n";
return 0;
}
ERRORS:
Use of undeclared identifier 'LC_COLLATE_MASK'
Unknown type name 'locale_t'; did you mean 'locale'?
Long list of errors all concerning unkown type names , undeclared identifiers and too many arguments given follows.
ERRORS
For simplicity CImg.h and X11 are in the project folder and is an explicit search path but I have various unsolved dependencies:
Is there a general method for adding pretty much any library to integrate in Xcode ?
How and where would these dependencies be resolved?
Additional Info :
The Project settings for include dirs are recursive for the X11 folder.
Have tried it with 32bit and 64bit configs.

Answer 1

Firstly, you need to tell Xcode where your header files are - specifically CImg.h.
To do that, first click the area marked red, then the green then the blue and in the Header Search Paths field, enter the directory that contains the file CImg.h.
Normally you then have to set up the Library Search Paths immediately below, and the libraries to link to. But as CImg is a header-only library, there is no need in this specific case.
Finally, I inserted one line of code to avoid all the X11 stuff since OSX no longer ships with X11 and your code doesn't do any X11 stuff anyway.
#include <iostream>
#define cimg_display 0
#include "CImg.h"
int main(int argc, const char * argv[])
{
std::cout << "Hello, World!\n";
return 0;
}
It now runs fine - as you can see at the foot of the screen capture.
Hope that helps.