add 'libprotobuf-mutator' recipe

[n-bes]

Specify library name and version: libprotobuf-mutator

https://www.youtube.com/watch?v=U60hC16HEDY

---

• I've read the guidelines for contributing.
• I've followed the PEP8 style guides for Python code in the recipes.
• I've used the latest Conan client version.
• I've tried at least one configuration locally with the
  conan-center hook activated.

[uilianries]

Thank you for your contribution, nice project, I didn't know about.

Please, take a look on my review. Happy new year!

[uilianries]

Do you have a reference about it? I only found:

https://github.com/google/libprotobuf-mutator/blob/54742e781e572a72214f3d76f4d2f9793dde9106/README.md#quick-start-on-debianubuntu

Clang is only needed for libFuzzer integration.

[uilianries]

up!

[uilianries]

Still didn't answer!

[n-bes]

Do you have a reference about it?

@uilianries can't answer in the topic without reason. I don't know any compiler which support libfuzzer.

[uilianries]

Do you have a reference about it?

@uilianries can't answer in the topic without reason. I don't know any compiler which support libfuzzer.

You are saying this recipe could work with other compilers but you did not test? If yes, remove that privation. Let's run Linux and Windows build. We skip some setting when we have some information from the upstream, or the project doesn't work and the upstream doesn't know and a hotfix is costly.

[n-bes]

You are saying this recipe could work with other compilers but you did not test?

No. I mean that libfuzzer is part (unique feature) of clang.

[SSE4]

You are saying this recipe could work with other compilers but you did not test? If yes, remove that privation. Let's run Linux and Windows build. We skip some setting when we have some information from the upstream, or the project doesn't work and the upstream doesn't know and a hotfix is costly.

let's move forward. it's not strictly necessary to add all the possible configurations at the very first iteration.
providing some configurations is an improvement over having no package at all.
adding additional configurations could be done in follow-up PRs, on-demand.

I think we're totally fine if someone wants to contribute some recipe, and doesn't want to test e.g. Windows, so puts if self.settings.os == "Windows": raise ConanInvalidConfiguration into the recipe, if it makes his contribution faster/easier.
I believe asking people to support everything at once might only distract people from contributions.

[conan-center-bot]

All green in build 1 (48a7aca05a30370671fbc57fbafda42a050b11a2):

• libprotobuf-mutator/cci.20210831@:
  All packages built successfully! (All logs)