[antlr4] Fix CMake files export

[LilyWangLL]

Fixes #17030, add CMake files export for antlr4.

[strega-nil-ms]

Cool, LGTM!

[NickStrupat]

@LilyWangLL is there any chance you could leverage your recent ANTLR4 momentum to quickly upgrade it to 4.10.1?
There were a bunch of improvements for the C++ target.

[LilyWangLL]

@LilyWangLL is there any chance you could leverage your recent ANTLR4 momentum to quickly upgrade it to 4.10.1? There were a bunch of improvements for the C++ target.

I will do this week.

[NickStrupat]

Hm, just trying this now and I don't see anything like

The package antlr4 provides CMake targets:

    find_package(antlr4-runtime CONFIG REQUIRED)
    target_link_libraries(main PRIVATE antlr4::antlr4)

when I add antlr4 to my vcpkg.json and then run ./vcpkg install

[NickStrupat]

Sorry, I had forgotten to run git submodule update --remote in my project to get the latest changes made in this PR.

[NickStrupat]

@LilyWangLL is there any chance you could leverage your recent ANTLR4 momentum to quickly upgrade it to 4.10.1? There were a bunch of improvements for the C++ target.

I will do this week.

Just wondering if you got a chance to make this upgrade :)

[LilyWangLL]

@LilyWangLL is there any chance you could leverage your recent ANTLR4 momentum to quickly upgrade it to 4.10.1? There were a bunch of improvements for the C++ target.

I will do this week.

Just wondering if you got a chance to make this upgrade :)

Sorry, I updated this port locally before, but the new version has some errors that need to be resolved, I will resolve them as soon as possible and submit a PR.

[NickStrupat]

I hope the errors are easy to resolve the second time they come up!

[LilyWangLL]

I hope the errors are easy to resolve the second time they come up!

PR #25416 will update antlr4 to 4.10.1.