[steamworks-sdk] New port

[Waffle0823]

• Changes comply with the maintainer guide.
• The packaged project shows strong association with the chosen port name. Check this box if at least one of the following criteria is met:
  • The project is in Repology: https://repology.org//versions
  • The project is amongst the first web search results for "" or " C++". Include a screenshot of the search engine results in the PR.
  • The port name follows the 'GitHubOrg-GitHubRepo' form or equivalent Owner-Project form.
• Optional dependencies of the build are all controlled by the port. A dependency is controlled if it is declared an unconditional dependency in vcpkg.json, or explicitly disabled through patches or build system arguments such as CMAKE_DISABLE_FIND_PACKAGE_Xxx or VCPKG_LOCK_FIND_PACKAGE
• The versioning scheme in vcpkg.json matches what upstream says.
• The license declaration in vcpkg.json matches what upstream says.
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[Waffle0823]

please read the following Contributor License Agreement

@microsoft-github-policy-service agree

[BillyONeal]

Drafting due to build failures.

[vicroms]

This port is packaging prebuilt binaries and creating a CMake wrapper on top of those bits. Aside from that, the way it downloads the Steamworks SDK is not compatible with our asset caching mechanism.

if(STEAMWORKS_USE_SDK_MIRROR)
    set(SWSDK_LINK "https://github.com/Waffle0823/SteamworksSDK-Mirror/archive/refs/tags/v${SWSDK_VERSION}.tar.gz" CACHE STRING "Steamworks SDK download link")
else()
    string(REPLACE "." "" SWSDK_VERSION_NODOT "${SWSDK_VERSION}")
    set(SWSDK_LINK "https://partner.steamgames.com/downloads/steamworks_sdk_${SWSDK_VERSION_NODOT}.zip" CACHE STRING "Steamworks SDK download link")
endif()

_steamworks_download_sdk(STEAMWORKS_SDK_ROOT)

[Waffle0823]

@vicroms
Can I ask is there any way to make pre-built assets compatible with asset caching system?

[BillyONeal]

Can I ask is there any way to make pre-built assets compatible with asset caching system?

All touching the network needs to be in portfile.cmake and use vcpkg_download_distfile or one of the helpers that transitively calls that.

At a minimum "steamworks-sdk" seems to be known in repology for coming from https://partner.steamgames.com/downloads/list and it's not even clear that the sources this is using are supposed to be public. The content at https://github.com/Waffle0823/SteamworksSDK-Mirror does not have a license grant from Valve allowing that content to be redistributed, and all their official downloads go to a login page for me. The existence of https://github.com/Waffle0823/SteamworksSDK-Mirror may constitute copyright infringement.

I don't think even changing the name to waffle0823-steamworks-sdk to avoid the naming problem fixes the situation; I think we need a statement from Valve that this is acceptable, or a documented license allowing redistribution of this, to proceed.

[BillyONeal]

https://partner.steamgames.com/documentation/sdk_access_agreement

I am not a lawyer but they appear to be explicitly prohibiting redistribution to me, emphasis mine:

1.1 License Grant. Valve hereby grants Licensee a nonexclusive, royalty-free, terminable, worldwide, nontransferable license to:

(a) use and locally reproduce the SDK in source code form, solely to develop the Licensee Software; and

[Waffle0823]

https://partner.steamgames.com/documentation/sdk_access_agreement

I am not a lawyer but they appear to be explicitly prohibiting redistribution to me, emphasis mine:

1.1 License Grant. Valve hereby grants Licensee a nonexclusive, royalty-free, terminable, worldwide, nontransferable license to:
(a) use and locally reproduce the SDK in source code form, solely to develop the Licensee Software; and

Thanks for your response.
I’m currently checking with Steam Support to confirm the licensing details. Once that’s clarified, I’ll update port.cmake to support the vcpkg caching system.