Some PROC's aren't defined.

[tbpaksoy]

Hello when I attempt to complie my code with clang++ I am having this :

My code is :

#include <GL/glew.h>

#define IMGUI_DEFINE_MATH_OPERATORS
#include "imgui.h"
#include "imgui.cpp"
#include "imgui_impl_glfw.h"
#include "imgui_impl_glfw.cpp"
#include "imgui_impl_opengl3.h"
#include "imgui_impl_opengl3.cpp"

#include <GLFW/glfw3.h>

int main()
{
    glfwInit();
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);

    GLFWwindow *window = glfwCreateWindow(800, 600, "UITest", nullptr, nullptr);
    glfwMakeContextCurrent(window);

    GLenum error = glewInit();

    ImGui::CreateContext();
    ImGui_ImplGlfw_InitForOpenGL(window, true);
    ImGui_ImplOpenGL3_Init("#version 330");
    ImGui::StyleColorsClassic();

    ImGui_ImplGlfw_NewFrame();
    ImGui_ImplOpenGL3_NewFrame();
    ImGui::NewFrame();

    ImGui::Begin("Hello, world!");
    ImGui::Text("This is some useful text.");
    ImGui::End();

    while (!glfwWindowShouldClose(window))
    {

        glfwPollEvents();
        glfwSwapBuffers(window);
    }

    ImGui_ImplOpenGL3_Shutdown();
    ImGui_ImplGlfw_Shutdown();
    ImGui::DestroyContext();

    glfwTerminate();
    return 0;
}

and my build task in VS Code is :

"type": "cppbuild",
            "label": "C/C++: clang++.exe build active file",
            "command": "C:\\msys64\\clang64\\bin\\clang++.exe",
            "args": [
                "-fcolor-diagnostics",
                "-fansi-escape-codes",
                "-fsanitize=address",
                "-L${fileDirname}",
                "-lglfw3",
                "-lopengl32",
                "-lglew32",
                "-lfreetype",
                "-lgdi32",
                "-limm32",
                "-g",
                "${file}",
                "-Iinclude",
                "-o",
                "${fileDirname}\\${fileBasenameNoExtension}.exe"
            ],
            "options": {
                "cwd": "${fileDirname}"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": "build",
            "detail": "compiler: C:\\msys64\\clang64\\bin\\clang++.exe"

How can I solve this ? Thanks in advance!

[ocornut]

#include <GL/glew.h>
....
#include "imgui_impl_opengl3.cpp"

I don't think you can include both glew.h and imgui_impl_opengl3.cpp implementation (which embed its own OpenGL loader) in the same compilation unit, because both will define the same function names.

They will need to be built in separate compilation units.

[tbpaksoy]

I have tried to build the example file. Maybe it is because of I am using older version of GLEW, is it posible ?

[tbpaksoy]

I have update GLEW from 2.1.0 to 2.2.0 but errors still in place.

[tbpaksoy]

It seems there are some '#define' and '#ifdef' problems.

[ocornut]

The example file does not use glew.

[tbpaksoy]

When I did #undef GL_VERSION_1_1 it solved my problem.