[wip] Build CppInterOp as a shared library on Windows

[mcbarton]

Description

Please include a summary of changes, motivation and context for this PR.

This is a duplicate of #454 , but without the random commit history, and without any conflicts with the main branch.

Fixes # (issue)

Type of change

Please tick all options which are relevant.

• Bug fix
• New feature
• Requires documentation updates

Testing

Please describe the test(s) that you added and ran to verify your changes.

Checklist

• I have read the contribution guide recently

[github-actions]

clang-tidy made some suggestions

[github-actions]

warning: no header providing "CLANG_VERSION_MAJOR" is directly included [misc-include-cleaner]

lib/Interpreter/Paths.cpp:20:

+ #include <clang/Basic/Version.h>

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.93%. Comparing base (208c36a) to head (80a8305).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #560   +/-   ##
=======================================
  Coverage   75.93%   75.93%           
=======================================
  Files           9        9           
  Lines        3644     3644           
=======================================
  Hits         2767     2767           
  Misses        877      877           

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[github-actions]

clang-tidy review says "All clean, LGTM! 👍"

[aaronj0]

Hi @mcbarton, would be great to have this shared lib build in so we can test the dispatch mechanism on windows. Are there any blockers on this PR currently? The logs have expired so I can't tell what was failing

[mcbarton]

Hi @mcbarton, would be great to have this shared lib build in so we can test the dispatch mechanism on windows. Are there any blockers on this PR currently? The logs have expired so I can't tell what was failing

Hi @aaronj0, I revisited this PR about 2 months ago in my fork, and the blocker was these unresolved external symbol errors https://github.com/mcbarton/CppInterOp/pull/2/checks#step:12:195 . If this can something be solved (which I guess would require changes upstream in llvm) then I should be able to finish this work alongide the work to get cppyy to build and run on Windows (this closed CppInterOp PR https://github.com/compiler-research/CppInterOp/pull/605/files)