[hlslpp] Add new port

[plekakis]

• Changes comply with the maintainer guide.
• The name of the port matches an existing name for this component on https://repology.org/ if possible, and/or is strongly associated with that component on search engines.
• Optional dependencies are resolved in exactly one way. For example, if the component is built with CMake, all find_package calls are REQUIRED, are satisfied by vcpkg.json's declared dependencies, or disabled with CMAKE_DISABLE_FIND_PACKAGE_Xxx.
• The versioning scheme in vcpkg.json matches what upstream says.
• The license declaration in vcpkg.json matches what upstream says.
• The installed as the "copyright" file matches what upstream says.
• The source code of the component installed comes from an authoritative source.
• The generated "usage text" is accurate. See adding-usage for context.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Only one version is in the new port's versions file.
• Only one version is added to each modified port's versions file.

[plekakis]

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________________________________ From: microsoft-github-policy-service[bot] ***@***.***> Sent: Sunday, August 11, 2024 7:29:20 PM To: microsoft/vcpkg ***@***.***> Cc: Pantelis Lekakis ***@***.***>; Mention ***@***.***> Subject: Re: [microsoft/vcpkg] Hlslpp port (hlsl++ from https://github.com/redorav/hlslpp) (PR #40400) @plekakis<https://github.com/plekakis> the command you issued was incorrect. Please try again. Examples are: @microsoft-github-policy-service agree and @microsoft-github-policy-service agree company="your company" — Reply to this email directly, view it on GitHub<#40400 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ABL7J5PJ2ZPSJF3IAAZZT6TZQ6UQBAVCNFSM6AAAAABMK6L4VWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDEOBSHA2DOOBZHE>. You are receiving this because you were mentioned.Message ID: ***@***.***>

[jimwang118]

Note: I will be converting your PR to draft status. The above suggested changes are only recommendations. If you are willing to adopt them, please click "ready for review" after making the modifications. If you do not wish to make any changes, please click "ready for review" directly. That way, I can be aware that you've responded since you can't modify the tags.

[dg0yt]

Most comments don't add value to the command that follow. Just remove them.

The CMake config package is not provided by upstream. The package-name should be prefixed with unofficial-.
https://learn.microsoft.com/en-us/vcpkg/contributing/maintainer-guide#add-cmake-exports-in-an-unofficial--namespace
And even for a header-only package, it might make sense to provide an imported target instead of variables.

[dg0yt]

Wouldn't it be nice to place includes in ${CMAKE_CURRENT_LIST_DIR}/../../include/hlslpp?

[dg0yt]

Suggested change

	# vcpkg_check_linkage(ONLY_STATIC_LIBRARY)
	# vcpkg_check_linkage(ONLY_STATIC_LIBRARY)

[plekakis]

Apologies for all the above, this is my first vcpkg contribution and I am learning still.
I'm talking to the author of hlslpp and doing this in his place instead, so I would still like this to be an official port - bear with me and will sort it all out properly.

[jimwang118]

Usage test pass with following triplet:

x64-windows