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mosra / magnum-examples

Examples for the Magnum C++11 graphics engine
https://magnum.graphics/
The Unlicense
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Linker errors building Bullet and ImGui examples #97

Closed AmeliaMesdag closed 3 years ago

AmeliaMesdag commented 3 years ago

I'm having issues trying to build some of the magnum-examples using Bullet and ImGui, the project was opened in VS 2019 as a CMake project with vcpkg integration. Here's the build output and I've included my configuration.

>------ Rebuild started: Project: CMakeLists, Configuration: Debug ------
  Microsoft (R) Build Engine version 16.8.3+39993bd9d for .NET Framework
  Copyright (C) Microsoft Corporation. All rights reserved.

  Microsoft (R) Build Engine version 16.8.3+39993bd9d for .NET Framework
  Copyright (C) Microsoft Corporation. All rights reserved.

    Checking Build System
    Building Custom Rule C:/Projects/CPP/magnum-examples/src/imgui/CMakeLists.txt
    ImGuiExample.cpp
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) void __cdecl ImGui::SetCurrentContext(struct ImGuiContext *)" (__imp_?SetCurrentContext@ImGui@@YAXPEAUImGuiContext@@@Z) referenced in function "private: bool __cdecl Magnum::ImGuiIntegration::Context::handleKeyEvent<class Magnum::Platform::Sdl2Application::KeyEvent>(class Magnum::Platform::Sdl2Application::KeyEvent &,bool)" (??$handleKeyEvent@VKeyEvent@Sdl2Application@Platform@Magnum@@@Context@ImGuiIntegration@Magnum@@AEAA_NAEAVKeyEvent@Sdl2Application@Platform@2@_N@Z) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) struct ImGuiIO & __cdecl ImGui::GetIO(void)" (__imp_?GetIO@ImGui@@YAAEAUImGuiIO@@XZ) referenced in function "public: virtual void __cdecl Magnum::Examples::ImGuiExample::drawEvent(void)" (?drawEvent@ImGuiExample@Examples@Magnum@@UEAAXXZ) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) void __cdecl ImGui::ShowDemoWindow(bool *)" (__imp_?ShowDemoWindow@ImGui@@YAXPEA_N@Z) referenced in function "public: virtual void __cdecl Magnum::Examples::ImGuiExample::drawEvent(void)" (?drawEvent@ImGuiExample@Examples@Magnum@@UEAAXXZ) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) bool __cdecl ImGui::Begin(char const *,bool *,int)" (__imp_?Begin@ImGui@@YA_NPEBDPEA_NH@Z) referenced in function "public: virtual void __cdecl Magnum::Examples::ImGuiExample::drawEvent(void)" (?drawEvent@ImGuiExample@Examples@Magnum@@UEAAXXZ) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) void __cdecl ImGui::End(void)" (__imp_?End@ImGui@@YAXXZ) referenced in function "public: virtual void __cdecl Magnum::Examples::ImGuiExample::drawEvent(void)" (?drawEvent@ImGuiExample@Examples@Magnum@@UEAAXXZ) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) void __cdecl ImGui::SetNextWindowPos(struct ImVec2 const &,int,struct ImVec2 const &)" (__imp_?SetNextWindowPos@ImGui@@YAXAEBUImVec2@@H0@Z) referenced in function "public: virtual void __cdecl Magnum::Examples::ImGuiExample::drawEvent(void)" (?drawEvent@ImGuiExample@Examples@Magnum@@UEAAXXZ) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) void __cdecl ImGui::SetNextWindowSize(struct ImVec2 const &,int)" (__imp_?SetNextWindowSize@ImGui@@YAXAEBUImVec2@@H@Z) referenced in function "public: virtual void __cdecl Magnum::Examples::ImGuiExample::drawEvent(void)" (?drawEvent@ImGuiExample@Examples@Magnum@@UEAAXXZ) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) void __cdecl ImGui::Text(char const *,...)" (__imp_?Text@ImGui@@YAXPEBDZZ) referenced in function "public: virtual void __cdecl Magnum::Examples::ImGuiExample::drawEvent(void)" (?drawEvent@ImGuiExample@Examples@Magnum@@UEAAXXZ) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) bool __cdecl ImGui::Button(char const *,struct ImVec2 const &)" (__imp_?Button@ImGui@@YA_NPEBDAEBUImVec2@@@Z) referenced in function "public: virtual void __cdecl Magnum::Examples::ImGuiExample::drawEvent(void)" (?drawEvent@ImGuiExample@Examples@Magnum@@UEAAXXZ) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) bool __cdecl ImGui::SliderFloat(char const *,float *,float,float,char const *,int)" (__imp_?SliderFloat@ImGui@@YA_NPEBDPEAMMM0H@Z) referenced in function "public: virtual void __cdecl Magnum::Examples::ImGuiExample::drawEvent(void)" (?drawEvent@ImGuiExample@Examples@Magnum@@UEAAXXZ) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) bool __cdecl ImGui::ColorEdit3(char const *,float * const,int)" (__imp_?ColorEdit3@ImGui@@YA_NPEBDQEAMH@Z) referenced in function "public: virtual void __cdecl Magnum::Examples::ImGuiExample::drawEvent(void)" (?drawEvent@ImGuiExample@Examples@Magnum@@UEAAXXZ) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) int __cdecl ImGui::GetMouseCursor(void)" (__imp_?GetMouseCursor@ImGui@@YAHXZ) referenced in function "public: void __cdecl Magnum::ImGuiIntegration::Context::updateApplicationCursor<class Magnum::Examples::ImGuiExample>(class Magnum::Examples::ImGuiExample &)" (??$updateApplicationCursor@VImGuiExample@Examples@Magnum@@@Context@ImGuiIntegration@Magnum@@QEAAXAEAVImGuiExample@Examples@2@@Z) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\ImGuiExample.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __cdecl ImGuiIO::AddInputCharactersUTF8(char const *)" (__imp_?AddInputCharactersUTF8@ImGuiIO@@QEAAXPEBD@Z) referenced in function "public: bool __cdecl Magnum::ImGuiIntegration::Context::handleTextInputEvent<class Magnum::Platform::Sdl2Application::TextInputEvent>(class Magnum::Platform::Sdl2Application::TextInputEvent &)" (??$handleTextInputEvent@VTextInputEvent@Sdl2Application@Platform@Magnum@@@Context@ImGuiIntegration@Magnum@@QEAA_NAEAVTextInputEvent@Sdl2Application@Platform@2@@Z) 
C:\Projects\CPP\magnum-examples\out\build\x64-Debug (default)\Debug\bin\magnum-imgui.exe : fatal error LNK1120: 13 unresolved externals 

Rebuild failed.

CMakeSettings.txt

Visual Studio 2019 Config vsconfig.txt

vcpkg listing

bullet3:x64-windows                                2.89-1           Bullet Physics is a professional collision detec...
bullet3:x86-windows                                2.89-1           Bullet Physics is a professional collision detec...
corrade:x64-windows                                2020.06          C++11/C++14 multiplatform utility library
corrade:x86-windows                                2020.06          C++11/C++14 multiplatform utility library
corrade[interconnect]:x64-windows                                   Interconnect library
corrade[interconnect]:x86-windows                                   Interconnect library
corrade[pluginmanager]:x64-windows                                  PluginManager library
corrade[pluginmanager]:x86-windows                                  PluginManager library
corrade[testsuite]:x64-windows                                      TestSuite library
corrade[testsuite]:x86-windows                                      TestSuite library
corrade[utility]:x64-windows                                        Utility library
corrade[utility]:x86-windows                                        Utility library
eigen3:x64-windows                                 3.3.9            C++ template library for linear algebra: matrice...
eigen3:x86-windows                                 3.3.9            C++ template library for linear algebra: matrice...
entt:x64-windows                                   3.6.0            Gaming meets modern C++ - a fast and reliable en...
entt:x86-windows                                   3.6.0            Gaming meets modern C++ - a fast and reliable en...
freeglut:x64-windows                               3.2.1-4          Open source implementation of GLUT with source a...
freeglut:x86-windows                               3.2.1-4          Open source implementation of GLUT with source a...
glew:x64-windows                                   2.1.0#10         The OpenGL Extension Wrangler Library (GLEW) is ...
glew:x86-windows                                   2.1.0#10         The OpenGL Extension Wrangler Library (GLEW) is ...
glfw3:x64-windows                                  3.3.2#1          GLFW is a free, Open Source, multi-platform libr...
glfw3:x86-windows                                  3.3.2#1          GLFW is a free, Open Source, multi-platform libr...
glm:x64-windows                                    0.9.9.8          OpenGL Mathematics (GLM)
glm:x86-windows                                    0.9.9.8          OpenGL Mathematics (GLM)
imgui:x64-windows                                  1.81             Bloat-free Immediate Mode Graphical User interfa...
imgui:x86-windows                                  1.81             Bloat-free Immediate Mode Graphical User interfa...
magnum-integration:x64-windows                     2020.06          Integrations for magnum, C++11/C++14 graphics mi...
magnum-integration:x86-windows                     2020.06          Integrations for magnum, C++11/C++14 graphics mi...
magnum-integration[bullet]:x64-windows                              BulletIntegration library
magnum-integration[bullet]:x86-windows                              BulletIntegration library
magnum-integration[eigen]:x64-windows                               EigenIntegration library
magnum-integration[eigen]:x86-windows                               EigenIntegration library
magnum-integration[glm]:x64-windows                                 GlmIntegration library
magnum-integration[glm]:x86-windows                                 GlmIntegration library
magnum-integration[imgui]:x64-windows                               ImGuiIntegration library
magnum-integration[imgui]:x86-windows                               ImGuiIntegration library
magnum:x64-windows                                 2020.06#3        C++11/C++14 graphics middleware for games and da...
magnum:x86-windows                                 2020.06#3        C++11/C++14 graphics middleware for games and da...
magnum[al-info]:x64-windows                                         magnum-al-info utility
magnum[al-info]:x86-windows                                         magnum-al-info utility
magnum[anyaudioimporter]:x64-windows                                AnyAudioImporter plugin
magnum[anyaudioimporter]:x86-windows                                AnyAudioImporter plugin
magnum[anyimageconverter]:x64-windows                               AnyImageConverter plugin
magnum[anyimageconverter]:x86-windows                               AnyImageConverter plugin
magnum[anyimageimporter]:x64-windows                                AnyImageImporter plugin
magnum[anyimageimporter]:x86-windows                                AnyImageImporter plugin
magnum[anysceneconverter]:x64-windows                               AnySceneConverter plugin
magnum[anysceneconverter]:x86-windows                               AnySceneConverter plugin
magnum[anysceneimporter]:x64-windows                                AnySceneImporter plugin
magnum[anysceneimporter]:x86-windows                                AnySceneImporter plugin
magnum[anyshaderconverter]:x64-windows                              AnyShaderConverter plugin
magnum[anyshaderconverter]:x86-windows                              AnyShaderConverter plugin
magnum[audio]:x64-windows                                           Audio library
magnum[audio]:x86-windows                                           Audio library
magnum[cglcontext]:x64-windows                                      CglContext library
magnum[cglcontext]:x86-windows                                      CglContext library
magnum[debugtools]:x64-windows                                      DebugTools library
magnum[debugtools]:x86-windows                                      DebugTools library
magnum[distancefieldconverter]:x64-windows                          magnum-distancefieldconverter utility
magnum[distancefieldconverter]:x86-windows                          magnum-distancefieldconverter utility
magnum[eglcontext]:x64-windows                                      EglContext library
magnum[eglcontext]:x86-windows                                      EglContext library
magnum[fontconverter]:x64-windows                                   magnum-fontconverter utility
magnum[fontconverter]:x86-windows                                   magnum-fontconverter utility
magnum[gl-info]:x64-windows                                         gl-info utility
magnum[gl-info]:x86-windows                                         gl-info utility
magnum[gl]:x64-windows                                              GL library
magnum[gl]:x86-windows                                              GL library
magnum[glfwapplication]:x64-windows                                 GlfwApplication library
magnum[glfwapplication]:x86-windows                                 GlfwApplication library
magnum[glxcontext]:x64-windows                                      GlxContext library
magnum[glxcontext]:x86-windows                                      GlxContext library
magnum[imageconverter]:x64-windows                                  magnum-imageconverter utility
magnum[imageconverter]:x86-windows                                  magnum-imageconverter utility
magnum[magnumfont]:x64-windows                                      MagnumFont plugin
magnum[magnumfont]:x86-windows                                      MagnumFont plugin
magnum[magnumfontconverter]:x64-windows                             MagnumFontConverter plugin
magnum[magnumfontconverter]:x86-windows                             MagnumFontConverter plugin
magnum[meshtools]:x64-windows                                       MeshTools library
magnum[meshtools]:x86-windows                                       MeshTools library
magnum[objimporter]:x64-windows                                     ObjImporter plugin
magnum[objimporter]:x86-windows                                     ObjImporter plugin
magnum[opengltester]:x64-windows                                    OpenGLTester library
magnum[opengltester]:x86-windows                                    OpenGLTester library
magnum[primitives]:x64-windows                                      Primitives library
magnum[primitives]:x86-windows                                      Primitives library
magnum[sceneconverter]:x64-windows                                  magnum-sceneconverter utility
magnum[sceneconverter]:x86-windows                                  magnum-sceneconverter utility
magnum[scenegraph]:x64-windows                                      SceneGraph library
magnum[scenegraph]:x86-windows                                      SceneGraph library
magnum[sdl2application]:x64-windows                                 Sdl2Application library
magnum[sdl2application]:x86-windows                                 Sdl2Application library
magnum[shaderconverter]:x64-windows                                 magnum-shaderconverter utility
magnum[shaderconverter]:x86-windows                                 magnum-shaderconverter utility
magnum[shaders]:x64-windows                                         Shaders library
magnum[shaders]:x86-windows                                         Shaders library
magnum[shadertools]:x64-windows                                     ShaderTools library
magnum[shadertools]:x86-windows                                     ShaderTools library
magnum[text]:x64-windows                                            Text library
magnum[text]:x86-windows                                            Text library
magnum[texturetools]:x64-windows                                    TextureTools library
magnum[texturetools]:x86-windows                                    TextureTools library
magnum[tgaimageconverter]:x64-windows                               TgaImageConverter plugin
magnum[tgaimageconverter]:x86-windows                               TgaImageConverter plugin
magnum[tgaimporter]:x64-windows                                     TgaImporter plugin
magnum[tgaimporter]:x86-windows                                     TgaImporter plugin
magnum[trade]:x64-windows                                           Trade library
magnum[trade]:x86-windows                                           Trade library
magnum[vk-info]:x64-windows                                         vk-info utility
magnum[vk-info]:x86-windows                                         vk-info utility
magnum[vk]:x64-windows                                              Vk library
magnum[vk]:x86-windows                                              Vk library
magnum[wavaudioimporter]:x64-windows                                WavAudioImporter plugin
magnum[wavaudioimporter]:x86-windows                                WavAudioImporter plugin
magnum[wglcontext]:x64-windows                                      WglContext library
magnum[wglcontext]:x86-windows                                      WglContext library
magnum[windowlesscglapplication]:x64-windows                        WindowlessCglApplication library
magnum[windowlesscglapplication]:x86-windows                        WindowlessCglApplication library
magnum[windowlesseglapplication]:x64-windows                        WindowlessEglApplication library
magnum[windowlesseglapplication]:x86-windows                        WindowlessEglApplication library
magnum[windowlessglxapplication]:x64-windows                        WindowlessGlxApplication library
magnum[windowlessglxapplication]:x86-windows                        WindowlessGlxApplication library
magnum[windowlesswglapplication]:x64-windows                        WindowlessWglApplication library
magnum[windowlesswglapplication]:x86-windows                        WindowlessWglApplication library
mimalloc:x64-windows                               1.6.4            Compact general purpose allocator with excellent...
mimalloc:x86-windows                               1.6.4            Compact general purpose allocator with excellent...
openal-soft:x64-windows                            1.21.1           OpenAL Soft is an LGPL-licensed, cross-platform,...
openal-soft:x86-windows                            1.21.1           OpenAL Soft is an LGPL-licensed, cross-platform,...
opengl:x64-windows                                 0.0#8            Open Graphics Library (OpenGL)[3][4][5] is a cro...
opengl:x86-windows                                 0.0#8            Open Graphics Library (OpenGL)[3][4][5] is a cro...
sdl2:x64-windows                                   2.0.14#2         Simple DirectMedia Layer is a cross-platform dev...
sdl2:x86-windows                                   2.0.14#2         Simple DirectMedia Layer is a cross-platform dev...
vulkan:x64-windows                                 1.1.82.1-1       A graphics and compute API that provides high-ef...
vulkan:x86-windows                                 1.1.82.1-1       A graphics and compute API that provides high-ef...
mosra commented 3 years ago

Hi,

as far as I'm aware, the dynamic ImGui vcpkg packages are broken as they don't export any symbols ... To work around that, you have these options:

Sorry about this, it used to work but we have no control over the other packages in vcpkg, they broke it in one sweeping change (https://github.com/microsoft/vcpkg/pull/5937) and we didn't figure out a solution yet. This issue is also tracked in https://github.com/mosra/magnum-integration/issues/67.

AmeliaMesdag commented 3 years ago

Understood. I'll remove vcpkg and do subtree builds of everything for now.

mosra commented 3 years ago

Vcpkg itself is still useful for the heavier dependencies (although sometimes it's acting up and sometimes just plain cursed) -- one common workflow for users is to have the heavier 3rd party dependencies pulled from vcpkg or other platform-specific package managers and keep just Magnum repos (well, and ImGui) as CMake subprojects.

AmeliaMesdag commented 3 years ago

Good idea. I settled on using the packaged versions of SDL and OpenAL; and compiling Magnum, Bullet and ImGui. Hopefully vcpkg dynamic libraries get sorted out, they're convenient for testing things out.

mosra commented 3 years ago

FYI as of https://github.com/mosra/magnum/commit/62628beac97726468351a1485b01caa5662a0d02 (and mosra/magnum#496) it's possible to bundle SDL2 as well (although doing so increases the CMake configure time quite significantly).

I'm closing this in favor of mosra/magnum-integration#67 to have the ImGui/vcpkg issue tracked in a single place, hope that's okay.