Question

I am trying to develop OpenGL programs with C++ on Mac using Netbeans, and there are some compilation errors:

“/usr/bin/make” -f nbproject/Makefile-Release.mk QMAKE= SUBPROJECTS= .build-conf
“/usr/bin/make” -f nbproject/Makefile-Release.mk dist/Release/GNU-MacOSX/sdl_test
mkdir -p build/Release/GNU-MacOSX
rm -f build/Release/GNU-MacOSX/main.o.d
g++ -c -O2 -MMD -MP -MF build/Release/GNU-MacOSX/main.o.d -o build/Release/GNU-MacOSX/main.o main.cpp
main.cpp:9:41: warning: OpenGL.framework/Headers/gl.h: No such file or directory

my code is as simple as this:

#include <iostream>
#include <OpenGL.framework/Headers/gl.h>

/*
 * 
 */
int main(int argc, char** argv) {
    std::cout << glGetString(GL_VERSION) << std::endl;

    return 0;
}

the compiler cannot find OpenGL header file even if I have added the including path and lib file in the project settings. This is really confusing..

Answer 1

In your project properties go to C++ Compiler. Under Include Directories add /System/Library/Frameworks. Under Linker at the bottom under Additional Options add -framework OpenGL.

Change your include directive to #include <OpenGL/gl.h>

Now you should be able to compile your program. But I seem to be missing something, because I get a segmentation fault, when I call glGetString…

#include <iostream>
#include <OpenGL/gl.h>

int main(int argc, char** argv) {
    const GLubyte* version = glGetString(GL_VERSION); // segmentation fault

    return 0;
}