Error building on Windows

[timi2506]

hi @stackotter, love swift-cross-ui! it works perfectly on my mac and (after a bit of fixing) on linux too! i only got one last problem: Windows.

i tried all sorts of things but it keeps on failing to build! the current log is:

C:\Users\_REDACTED_\HelloWorld>swift-bundler run
info: Loading package manifest
info: Starting debug build
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: couldn't find pc file for gtk+-3.0
warning: couldn't find pc file for gtk4
warning: couldn't find pc file for gtk+-3.0
warning: couldn't find pc file for gtk4
[1/1] Planning build
Building for debugging...
lld-link: error: undefined symbol: main
>>> referenced by D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:78
>>>               msvcrt.lib(exe_main.obj):(int __cdecl invoke_main(void))
>>> referenced by D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288
>>>               msvcrt.lib(exe_main.obj):(int __cdecl __scrt_common_main_seh(void))
clang: error: linker command failed with exit code 1 (use -v to see invocation)
[3/172] Linking HotReloadingMacrosPlugin-tool.exe

attached is the Source Code for my testing app and the full log (swift-bundler run -v)

HelloWorld.zip

log.txt

[timi2506]

OK so i figured out it works if i use swift run instead of swift-bundler run

[stackotter]

Which Swift version and Windows version are you using? I believe I know why main is undefined, but I'm not sure why anything was looking for it in the first place because Windows has a few alternative main function names that get used for different purposes. Swift Bundler compiles apps to have the wWinMain entry point which is the one to have if you don't want your app to create a command prompt window every time it opens.

[timi2506]

Im using Windows 11 24H2 (OS Build 26100.6584) and swift 6.2-release

Target: x86_64-unknown-windows-msvc
Build config: +assertions

[timi2506]

--Xswiftpm -Xlinker --Xswiftpm /SUBSYSTEM:WINDOWS works but it shows a new error when i try to use the created EXE: