antigrain: add library

[xakod]

Specify library name and version: agg/2.6.0

I have been submitting my own fork because the library has not been supported for years, and here is a final version. If you have questions please look at ghaerr/agg-2.6#1 and then ghaerr/agg-2.6#6
Package is linked to commit due to any changes maybe requested. If pull request is ok, I'll create a tag for commit and relink package.
Shared option was disabled because I cannot find that origin package makefiles support shared build.

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• I've read the contributing guidelines.
• I've used a recent Conan client version close to the currently deployed.
• I've tried at least one configuration locally with the conan-center hook activated.

[prince-chrismc]

It appears this is a fork of the main repo which is still very active https://github.com/ghaerr/agg-2.6

We generally do not accept these, is there a reason you did not use the original or contribute to it? I saw they made improvements to their CMake just 2 days ago

[xakod]

Of course, my pr may look strange and I understand your position. Let me explain my position. Firstly, I don't see any commits since Jul 21, 2022. Secondly, it contains only 19 commits from May 6, 2019. Others commits do not relay to current repo and current owner. Thirdly, 2.6.0 was released in 2018 and no releases were published in current repo. You said it active, maybe. I'm not sure how to classify this is active and this is not. You can look at pull requests https://github.com/ghaerr/agg-2.6/pulls. There are 2 prs, and they related to cmake improvements, they were not reviewed for years. If you are strongly against using fork, I will create another third pull request. But I'd be willing to bet that no one will review it or accept for years.

[prince-chrismc]

In such a case I would recommend using our author- prefix so that it's more clearly evident that this is a specific variant of a project :)

this way people can benifit from the project while not getting mixed up :)

[xakod]

@prince-chrismc what is author- prefix? I could not find any docs about this

[prince-chrismc]

https://github.com/conan-io/conan-center-index/blob/master/docs/faqs.md#what-is-the-policy-on-recipe-name-collisions

🤔 I need to write better docs for that....

[prince-chrismc]

#17374

[xakod]

@prince-chrismc thank you, I applied your suggestion but looks like cla bot is broken.

[prince-chrismc]

Is there a reason to have this option? can we remove it?

[xakod]

Maybe you are right. I still leave it there because maybe someone will test shared library, and we'll enable it.

[uilianries]

@Jihadist please, sign the CLA again. It has been updated. Sorry for the inconvenient.

[xakod]

@uilianries thank you, I signed

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 18 (134e59f0b440b1bd9ba1d2f04d7dedded21a81e3):

• aggeom-agg/2.6.1@:
  All packages built successfully! (All logs)

---

Conan v2 pipeline ✔️

Note: Conan v2 builds may be required once they are on the v2 ready list

All green in build 17 (134e59f0b440b1bd9ba1d2f04d7dedded21a81e3):

• aggeom-agg/2.6.1@:
  All packages built successfully! (All logs)

[CLAassistant]

All committers have signed the CLA.