我在 MinGW 上安装了 GLFW，并按照 GLFW 网站上关于如何使用 Opengl 编写代码的教程（http://www.glfw.org/GLFWUsersGuide277.pdf）。然后，当我尝试编译代码 MinGW 回复时（致命错误：gl\glfw.h：不存在此类文件或目录，编译终止）。
这是我编译的网站代码
#include <GL/glfw.h>
#include <stdlib.h>
int main(void)
{
int running = GL_TRUE;
// Initialize GLFW
if( !glfwInit() )
{
exit( EXIT_FAILURE );
}
// Open an OpenGL window
if( !glfwOpenWindow( 300,300, 0,0,0,0,0,0, GLFW_WINDOW ) )
{
glfwTerminate();
exit( EXIT_FAILURE );
}
// Main loop
while( running )
{
// OpenGL rendering goes here...
glClear( GL_COLOR_BUFFER_BIT );
// Swap front and back rendering buffers
glfwSwapBuffers();
// Check if ESC key was pressed or window was closed
running = !glfwGetKey( GLFW_KEY_ESC ) &&
glfwGetWindowParam( GLFW_OPENED );
}
// Close window and terminate GLFW
glfwTerminate();
// Exit program
exit( EXIT_SUCCESS );
}