Linking a simple swift program with a static library dependency fails.

[kcieplak]

On windows a simple command link tool, that has a dependency on a static library fails to link.

LinkerTests.alternateLinkerSelection exposes this error and has to expect the error.

During the "Ld" task the linker fails to find the shared library.
LNK1181: cannot open input file 'Library.lib'

To reproduce
swift test --filter alternateLink

[kcieplak]

I have traced down the issue to the fact that we are creating the static library with a prefix of lib which is not how libraries are named in windows.

Using clang as the linker the -L Library is translated to a linker argument of "Library.lib"
However the the static library is named "libLibrary.lib"

AppData\Local\Temp\swbuild.tmp.40F9B78F-93B9-47FB-A592-0A6F98DFAD3D\Data.noindex\build\Debug-windows

2025-03-05  10:38 AM    <DIR>          .
2025-03-05  10:38 AM    <DIR>          ..
2025-03-05  10:38 AM    <DIR>          CommandLineTool.swiftmodule
2025-03-05  10:38 AM             3,472 libLibrary.lib
2025-03-05  10:38 AM    <DIR>          Library.swiftmodule

The fix is to set the EXECUTABLE_PREFIX to empty on the windows platform for static libraries.

Patch coming up shortly.

[kcieplak]

#250