example_sdl3_wgpu : Building for desktop with WGVK fails with various errors

[shanemcandrewai]

Version/Branch of Dear ImGui:

Version 1.92.8, Branch: master

Back-ends:

imgui_impl_sdl3.cpp + imgui_impl_wgpu.cpp

Compiler, OS:

Windows 11, clang version 22.1.1, Windows 11 SDK (10.0.26100.775)

Full config/build information:

Details:

Following the instructions # Building for desktop with WGVK (MUCH EASIER) -

1. git clone https://github.com/manuel5975p/WGVK dawn
2. cmake -B build -DIMGUI_WGVK_DIR=wgvk
3. cmake --build build

Is there a typo in point 1? I tried git cloning WGVK to both dawn and wgvk but failed to generate the build files in both cases with step 2, error below -

CMake Error at C:/Program Files/CMake/share/cmake-4.3/Modules/FindPackageHandleStandardArgs.cmake:290 (message):
  Could NOT find Vulkan (missing: Vulkan_LIBRARY Vulkan_INCLUDE_DIR) (found
  version "")
Call Stack (most recent call first):
  C:/Program Files/CMake/share/cmake-4.3/Modules/FindPackageHandleStandardArgs.cmake:654 (_FPHSA_FAILURE_MESSAGE)
  C:/Program Files/CMake/share/cmake-4.3/Modules/FindVulkan.cmake:711 (find_package_handle_standard_args)
  CMakeLists.txt:150 (find_package)

To overcome this error, I first built the wgvk repo, then executed -

cmake -B build -DIMGUI_WGVK_DIR=wgvk -DVulkan_LIBRARY=wgvk/build/Release -DVulkan_LIBRARY=wgvk/include -G "Ninja Multi-Config"

this ran without error but I when I tried to build with cmake --build build, it failed with -

[10/10] Linking CXX executable Debug\example_sdl3_wgpu.exe
FAILED: [code=1] Debug/example_sdl3_wgpu.exe 
C:\WINDOWS\system32\cmd.exe /C "cd . && C:\PROGRA~1\LLVM\bin\CLANG_~1.EXE -nostartfiles -nostdlib -O0 -g -Xclang -gcodeview -D_DEBUG -D_DLL -D_MT -Xclang --dependent-lib=msvcrtd -Xlinker /subsystem:console -fuse-ld=lld-link CMakeFiles/example_sdl3_wgpu.dir/Debug/main.cpp.obj CMakeFiles/example_sdl3_wgpu.dir/Debug/C_/Users/shane/dev/imgui/backends/imgui_impl_sdl3.cpp.obj CMakeFiles/example_sdl3_wgpu.dir/Debug/C_/Users/shane/dev/imgui/backends/imgui_impl_wgpu.cpp.obj CMakeFiles/example_sdl3_wgpu.dir/Debug/C_/Users/shane/dev/imgui/imgui.cpp.obj CMakeFiles/example_sdl3_wgpu.dir/Debug/C_/Users/shane/dev/imgui/imgui_draw.cpp.obj CMakeFiles/example_sdl3_wgpu.dir/Debug/C_/Users/shane/dev/imgui/imgui_demo.cpp.obj CMakeFiles/example_sdl3_wgpu.dir/Debug/C_/Users/shane/dev/imgui/imgui_tables.cpp.obj CMakeFiles/example_sdl3_wgpu.dir/Debug/C_/Users/shane/dev/imgui/imgui_widgets.cpp.obj CMakeFiles/example_sdl3_wgpu.dir/Debug/wgvk/src/wgvk.c.obj -o Debug\example_sdl3_wgpu.exe -Xlinker /MANIFEST:EMBED -Xlinker /implib:Debug\example_sdl3_wgpu.lib -Xlinker /pdb:Debug\example_sdl3_wgpu.pdb -Xlinker /version:0.0   -lglfw.lib  C:/Users/shane/dev/SDL3/imgui_sdl3_wgpu/wgvk/build/Release  C:/Users/shane/dev/SDL3/SDL3-3.4.4/lib/x64/SDL3.lib  -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 -loldnames  && cd ."
lld-link: error: could not open 'glfw.lib': no such file or directory
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.

Do I really need glfw.lib? Where did I go wrong?

Extra info: I was able to successfully build example_sdl3_wgpu with Dawn and Emscripten following the instructions with only a few tweaks to the CMakeLists.txt

Screenshots/Video:

No response

Minimal, Complete and Verifiable Example code:

// Here's some code anyone can copy and paste to reproduce your issue
ImGui::Begin("Example Bug");
MoreCodeToExplainMyIssue();
ImGui::End();

[ocornut]

Thanks for reporting!

They are errors in the cmakefile for SDL2 and SDL3. #9387 didn't provide them, I requested them in #9387 (comment) but it wasn't done by @manuel5975p so I manually added them to the PR without testing and I made those mistake.

The documentation line should say

#  1. git clone https://github.com/manuel5975p/WGVK wgvk

And glfw should be removed from the set(LIBRARIES list. How should they be changed for SDL2 and SDL3? (I have no idea)

[shanemcandrewai]

Thanks for reporting!

... and thank you for sharing your software, good work! I have done some further investigation my previously successful build of example_sdl3_wgpu with Dawn using VC 19.50.35728 for x64. This time, I tried the same with clang version 22.1.1, Windows 11 SDK (10.0.26100.775). However it failed with error fatal error: 'dawn/webgpu_cpp.h' file not found. Is this error clang related?

[ocornut]

I have no idea about Dawn. I’d prefer to avoid it personally. Would be good to fix the cmakelist file to pull sdl2/sdl3 correctly but I don’t know how to do that.

[shanemcandrewai]

> # 1. git clone https://github.com/manuel5975p/WGVK wgvk
> And `glfw` should be removed from the `set(LIBRARIES` list. How should they be changed for SDL2 and SDL3? (I have no idea)

I changed

set(LIBRARIES glfw Vulkan::Vulkan ${WGVK_PLATFORM_LIBS})

to

set(LIBRARIES Vulkan::Vulkan ${WGVK_PLATFORM_LIBS})

and added

set(SDL3_DIR ../SDL3-3.4.4/cmake)

so that cmake can find SDL3 with

find_package(SDL3 REQUIRED CONFIG REQUIRED COMPONENTS SDL3)

then created the build files with

cmake -B build -DIMGUI_WGVK_DIR=wgvk -DVulkan_LIBRARY=wgvk/build/Release -DVulkan_INCLUDE_DIR=wgvk/include -G "Ninja Multi-Config"

which causes clang to be detected. I could then build it successfully with -

cmake --build build --config Release