Run CGAL c++ program on OS X?

Question

I want to be able to execute programs on my computer. I installed CGAL using Macports, I am not sure how to proceed next. Can anybody tell me how to execute the program, I am desperately trying to run the following program but don't know how to:

#include <iostream>
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/convex_hull_2.h>
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef K::Point_2 Point_2;
int main()
{
  Point_2 points[5] = { Point_2(0,0), Point_2(10,0), Point_2(10,10), Point_2(6,5), Point_2(4,1) };
  Point_2 result[5];
  Point_2 *ptr = CGAL::convex_hull_2( points, points+5, result );
  std::cout <<  ptr - result << " points on the convex hull:" << std::endl;
  for(int i = 0; i < ptr - result; i++){
    std::cout << result[i] << std::endl;
  }
  return 0;
}

score 1 · Answer 1 · answered Dec 08 '14 at 07:02

1

CGAL comes with a script called cgal_create_cmake_script that should be run where you saved your example file. Then run cmake . and make

answered Dec 08 '14 at 07:02

sloriot

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This only works if the file is called *.C or *.cpp, it will ignore files named *.cc or *.cxx or anything else. – Marc Glisse Dec 08 '14 at 08:53
Isn't `cgal_create_CMakeLists` the modern version? `cgal_create_cmake_script` only knows Qt3... – Marc Glisse Dec 08 '14 at 09:03
No idea if it is shipped with the macport package. You can take it in the tgz if not. – sloriot Dec 08 '14 at 17:15

score 0 · Accepted Answer · answered Dec 08 '14 at 21:53

CGAl gets installed on the directory :

opt/local/include/cgal

steps:

Write your program into a text file and save excutable.cpp
In the command line go to the directory of the executable( use cd command)
then write the following commands

cgal_create_CMakeLists -s executable //without .cpp!!

cmake -DCGAL_DIR = opt/local/include/cgal

make
go to the folder where you saved executable.cpp and then click on the executable file(has a black square icon)
and your done :)

NOTE: only works if you installed using macports. if you installed using homebrew directories change,the procedure remains the same :)

You also need command line tools installed.

Run CGAL c++ program on OS X?

2 Answers2