vulkan-go
Having trouble linking the MoltenVK framework on macOS
When I run go get "github.com/vulkan-go/vulkan", the framework cannot be found:
~/W/A/go-vulkan-engine ❯❯❯ go get "github.com/vulkan-go/vulkan" ✘ 2
# github.com/vulkan-go/vulkan
ld: framework not found MoltenVK
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I tried copying MoltenVK.xcframework to the /Library/Frameworks folder, symlinking, also with vulkan.framework and I can't make it work.
I also tried to run it with sudo, no luck.
Has anyone run into the same problem?
It seems MoltenVK switched to use the new xcframework which is great for packaging multiple static libraries for different platforms - unfortunately, it doesn't play nice with clang.
I was able to work around the problem by using the dylib version of MoltenVK, unfortunately that required me to fork vulkan-go/vulkan and vulkan-go/glfw since there's no way to replace the linking flags.
I've created an issue on the MoltenVK project: https://github.com/KhronosGroup/MoltenVK/issues/1328
But perhaps it would make sense to add a way to select framework or dylib in vulkan_darwin.go. E.g. with a build tag
@ptxmac I'm okay to always follow the bleeding edge. If that's a simple change (and doesn't require full re-gen), then PR is very welcome :)
I don't see the point to use framework version at all..
The framework version might be useful for creating iOS / tvOS / etc apps - but it shouldn't be a blocker.
Unfortunately, the MoltenVK project only provides make targets for installing the xcframework. So the installation becomes a bit more manual.
I'll put up some PRs with the changes
For vulkan: https://github.com/vulkan-go/vulkan/pull/52
And the same change for glfw: https://github.com/vulkan-go/glfw/pull/6
The Makefile didn't work, however using CGO_CFLAGS="$(pkg-config --cflags glfw3)" CGO_LDFLAGS="-L/usr/local/lib $(pkg-config --libs glfw3)" go build works. (Note the -L/usr/local/lib part)
