gregcotten / example-spm-compile-error

example-spm-compile-error

SPM Issue

Details

I made a fork of SwiftCOM and removed the .dynamic requirement of the vended library. My intent was to make a larger single dynamic library with that code packaged in so I didn't have to deal with multiple .dlls.

The Real Issue

There are just too many swift files in the target dependency for the compiler to handle, I think. I made another branch of SwiftCOM (just change branch name from example-spm-compile-error to develop) with less files in the target that can build in release mode just fine! The first hint I got was when I used the flag --use-integrated-swift-driver and saw some error about the path being too long.

To Reproduce the Bug

Tested on Windows 10 + Swift 5.7.1

Clone the example repo and run swift build -c release

Expected Result

The build finishes without errors

Actual Result

Error: <unknown>:0: error: supplementary output file map 'C:\\Users\\gregc\\AppData\\Local\\Temp\\TemporaryDirectory.aUcYOo\\supplementaryOutputs-1' is missing an entry for 'C:\\Users\\gregc\\Documents\\GitHub\\example-spm-compile-error\\.build\\checkouts\\swift-com\\Sources\\SwiftCOM\\COMBase.swift' (this likely indicates a compiler issue; please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project)