[Build] Allow building without Conan

[AnotherFoxGuy]

fixes: #75

PR for building without having Conan installed

STATUS:
Builds and runs on Manjaro with wxgtk3-dev 3.1.5-2 (See: https://github.com/tenacityteam/tenacity/pull/234#issuecomment-884876066)

Contributor stuff

✅ The code in this pull request is licensed under "GPLv2 or any later version"*
✅ I made sure the code compiles on my machine
✅ I made sure there are no unnecessary changes in the code*
✅ I made sure the title of the PR reflects the core meaning of the issue you are solving*
✅ I made sure the commit message(s) contain a description and answer the question "Why do those changes fix that particular issue?" or "Why are those changes really necessary as improvements?"*

[Be-ing]

Thanks for working on this but I am in doubt this is a good direction to continue. Audacity is planning more changes to their dependency management, so I think it may be difficult to maintain this in the future. Judging from what they have done so far and their continued snide remarks towards Linux users I have little confidence those changes will turn out very well. I think it will be easier to maintain to bypass the Conan mess entirely as #228 does.

[nbsp]

What is the status of this PR? #228 has made significant progress on the same front. If this is no longer actively developed, please close this PR.

[n0toose]

To be honest, it could be good if the USE_CONAN variable was still there, so some of his (much appreciated, BTW) efforts can still be used, carried on and adjusted to the more recent/newer changes.

[AnotherFoxGuy]

What is the status of this PR?

It builds with wxWidgets V3.1.5, but I haven't tested if it runs on linux

[n0toose]

This may be very important for our first release. See: https://github.com/tenacityteam/tenacity/pull/300#issuecomment-884782522

[AnotherFoxGuy]

Just tested this on manjaro with wxgtk3-dev 3.1.5-2, seems to work fine

[nbsp]

Could this be rebased into one commit Allow building without Conan? I doubt the bug fix warrants its own commit

[n0toose]

FYI: 🎉 emojis look good on the GitHub front-end but weird on the Git CLI and other frontends.

I'd suggest changing the :tada: to an actual emoji or getting rid of it altogether?

[n0toose]

Building this without Conan seems to work.

[n0toose]

Seems good to me, I think building this with Conan using the correct parameter needs some further testing.

[Be-ing]

Please rename Findlibmp3lame.cmake to Findmp3lame.cmake for consistency with the CMake target name in vcpkg.

[AnotherFoxGuy]

@Be-ing Please rename Findlibmp3lame.cmake to Findmp3lame.cmake for consistency with the CMake target name in vcpkg.

Renaming lame will completely break the buildsystem, I will open a separate PR to fix it
(Also, vcpkg is the only one that calls it mp3lame)

[fossdd]

Builds and works.

[n0toose]

Edgar, this seriously rocks.

This has been resolved.