It's friday....

include/gl_utils.h

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+/******************************************************************************\
+| OpenGL 4 Example Code.                                                       |
+| Accompanies written series "Anton's OpenGL 4 Tutorials"                      |
+| Email: anton at antongerdelan dot net                                        |
+| First version 27 Jan 2014                                                    |
+| Dr Anton Gerdelan, Trinity College Dublin, Ireland.                          |
+| See individual libraries for separate legal notices                          |
+\******************************************************************************/
+#ifndef _GL_UTILS_H_
+#define _GL_UTILS_H_
+
+#include "glad/glad.h"    // include GLEW and new version of GL on Windows
+#include <GLFW/glfw3.h> // GLFW helper library
+#include <stdarg.h>
+
+#define GL_LOG_FILE "gl.log"
+
+extern GLFWwindow* g_window;
+
+bool restart_gl_log();
+
+bool gl_log( const char* message, ... );
+
+/* same as gl_log except also prints to stderr */
+bool gl_log_err( const char* message, ... );
+
+void glfw_error_callback( int error, const char* description );
+
+void log_gl_params();
+
+void _update_fps_counter( GLFWwindow* window );
+
+const char* GL_type_to_string( unsigned int type );
+
+void print_shader_info_log( GLuint shader_index );
+
+void print_programme_info_log( GLuint sp );
+
+void print_all( GLuint sp );
+
+bool is_valid( GLuint sp );
+
+bool parse_file_into_str( const char* file_name, char* shader_str, int max_len );
+
+GLuint create_programme_from_files( const char* vert_file_name, const char* frag_file_name );
+
+#endif