A simple application with SDL (1.2 and 2), to check whether it is working or not.

SDL.cpp

#include <iostream>

#include <SDL/SDL.h>

int main(int argc, char * argv[])
{
	// Initialize SDL with video
	SDL_Init(SDL_INIT_VIDEO);
	
	// Create a window with SDL
	if(SDL_SetVideoMode(640, 480, 32, SDL_DOUBLEBUF | SDL_OPENGL) == 0)
	{
		std::cerr << "Failed to set video mode\n";
		return 1;
	}
	
	
	SDL_Event event;	 // used to store any events from the OS
	bool running = true; // used to determine if we're running the game
	
	while(running)
	{
		// poll for events from SDL
		while(SDL_PollEvent(&event))
		{
			// determine if the user still wants to have the window open
			// (this basically checks if the user has pressed 'X')
			running = event.type != SDL_QUIT;
		}
		
		// Swap OpenGL buffers
		SDL_GL_SwapBuffers();
	}
	
	// Quit SDL
	SDL_Quit();
	
    return 0;
}

SDL2.cpp

#include <iostream>

#include <SDL2/SDL.h>

// if we're compiling for iOS (iPhone/iPad)
#ifdef __IPHONEOS__
#	include <SDL2/SDL_opengles.h> // we want to use OpenGL ES
#else
#	include <SDL2/SDL_opengl.h> // otherwise we want to use OpenGL
#endif

int main(int argc, char * argv[])
{
	// Initialize SDL with video
	SDL_Init(SDL_INIT_VIDEO);
	
	// Create an SDL window
	SDL_Window* window = SDL_CreateWindow("Test", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_OPENGL);
	
	// if failed to create a window
	if(!window)
	{
		// we'll print an error message and exit
		std::cerr << "Error failed to create window!\n";
		return 1;
	}
	
	// Create an OpenGL context (so we can use OpenGL functions)
	SDL_GLContext context = SDL_GL_CreateContext(window);
	
	// if we failed to create a context
	if(!context)
	{
		// we'll print out an error message and exit
		std::cerr << "Error failed to create a context\n!";
		return 2;
	}
	
	SDL_Event event;	 // used to store any events from the OS
	bool running = true; // used to determine if we're running the game
	
	glClearColor(1, 0, 0, 1);
	while(running)
	{
		// poll for events from SDL
		while(SDL_PollEvent(&event))
		{
			// determine if the user still wants to have the window open
			// (this basically checks if the user has pressed 'X')
			running = event.type != SDL_QUIT;
		}
		
		glClear(GL_COLOR_BUFFER_BIT);
		
		// Swap OpenGL buffers
		SDL_GL_SwapWindow(window);
	}
	
	
	// Destroy the context
	SDL_GL_DeleteContext(context);
	
	// Destroy the window
	SDL_DestroyWindow(window);
	
	// And quit SDL
	SDL_Quit();
	
	return 0;
}