Check shaders for errors

shadercheck.cpp

void checkShaderForErrors(GLuint shaderID) {
    // check shader for errors
    glGetShaderiv(shaderID, GL_COMPILE_STATUS, &compile_status);
    glGetShaderiv(shaderID, GL_INFO_LOG_LENGTH, &logLength);

    logMsg = new GLchar[logLength + 1];

    glGetShaderInfoLog(shaderID, logLength, NULL, logMsg);

    if (compile_status != GL_TRUE) {
        fprintf(stderr, "Error in shader(%i): %s\n", shaderID, logMsg);
        std::exit(EXIT_FAILURE);
    }
}

void checkLinkForErrors(GLuint programID) {
    glGetProgramiv(programID, GL_LINK_STATUS, &link_status);
    glGetProgramiv(programID, GL_INFO_LOG_LENGTH, &logLength);

    logMsg = new GLchar[logLength + 1];

    glGetProgramInfoLog(programID, logLength, NULL, logMsg);

    if (link_status != GL_TRUE) {
        fprintf(stderr, "Error in linking program: %s\n", logMsg);
        std::exit(EXIT_FAILURE);
    }
}