Cpp SDK. Fixed regex for version detection. Fixed mingw build.

[dsazonoff]

Fixed Agones version detection for CMake scripts (based on git tag).
Fixed mingw (windows) build of zlib and gRPC dependency.
Added more informative error for mingw build, if OpenSSL was not found (rare case); because building of OpenSSL with mingw in a cross-platform way is tricky (require CMake->MSYS->OpenSSL chain). I'm not sure that we should add an instruction how to build OpenSSL to our documentation. Prebuilt OpenSSL for windows may be found there. OpenSSL is required only for successful gRPC build.

[agones-bot]

Build Failed 😱

Build Id: 08560209-0748-4193-901c-d504d001e38b

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[agones-bot]

Build Failed 😱

Build Id: 1a136532-e922-4a44-8cb1-3dab322e693d

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[dsazonoff]

I'm not sure, why tests are failed. I didn't touch any documentation.
/assign markmandel

[aLekSer]

I performed make test-gen-api-docs locally:

> git fetch https://github.com/GoogleCloudPlatform/agones.git pull/1029/head:pr_1029 && git checkout pr_1029        
> make test-gen-api-docs
{{% feature publishVersion="0.12.0" %}}
sort /Users/alex/go/src/agones.dev/agones/site/content/en/docs/Reference/agones_crd_api_reference.html > /tmp/result.sorted                                                                
diff -bB /tmp/result.sorted /tmp/generated.html.sorted

All is fine no errors. On CI build it generates an error, which is strange.

[markmandel]

I would suggest rebasing master into your branch -- sounds like you are working off some super old code.

[markmandel]

Ah, there was an issue which I just fixed #1031 - waiting for it to be merged. That will actually solve the build issue

[roberthbailey]

#1031 has merged.

[agones-bot]

Build Succeeded 👏

Build Id: bd56b5e6-b639-4e65-b2d7-4cd6a59c3e0a

The following development artifacts have been built, and will exist for the next 30 days:

• image: gcr.io/agones-images/agones-controller:1.0.0-ac95540
• image: gcr.io/agones-images/agones-sdk:1.0.0-ac95540
• image: gcr.io/agones-images/agones-ping:1.0.0-ac95540
• Linux C++ SDK (build): agonessdk-1.0.0-ac95540-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.0.0-ac95540.zip

A preview of the website (the last 30 builds are retained):

• https://ac95540-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/1029/head:pr_1029 && git checkout pr_1029
• helm install install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.0.0-ac95540

[markmandel]

Calling @devjgm 👋 - Please take a look

[devjgm]

My cmake-fu is not very strong. So, I'll say this LGTM, but I am not a cmake expert and I'm the furthest thing from a windows/mingw expert.

[roberthbailey]

Approving based on @devjgm's lgtm.

[google-oss-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[agones-bot]

Build Succeeded 👏

Build Id: a219057b-5329-4ebd-8301-0d7daddba273

The following development artifacts have been built, and will exist for the next 30 days:

• image: gcr.io/agones-images/agones-controller:1.0.0-8054b1d
• image: gcr.io/agones-images/agones-sdk:1.0.0-8054b1d
• image: gcr.io/agones-images/agones-ping:1.0.0-8054b1d
• Linux C++ SDK (build): agonessdk-1.0.0-8054b1d-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.0.0-8054b1d.zip

A preview of the website (the last 30 builds are retained):

• https://8054b1d-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/1029/head:pr_1029 && git checkout pr_1029
• helm install install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.0.0-8054b1d