[steam-audio] Adding port

[Honeybunch]

Adding this port for those of us who crave spatial audio

• 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.

[Honeybunch]

Friendly bump that this is ready for review 😃

[JavierMatosD]

@Honeybunch, please mark "ready for review" once you have responded to @FrankXie05 / @dg0yt review comments. Thanks!

[Honeybunch]

I am trying to upstream what parts of this patch I can but the Steam-Audio repo hasn't seen activity for two months so it may take a while

[BillyONeal]

Sorry for the delay on the review, looks like this one fell through the cracks. I pushed some nitpick fixes to clean up some meaningless files in the installed package, and make sure the right third party notices were included as they were being installed to $/root/THIRDPARTY.md rather than being part of the copyright file.

This looks good to me now. Can you answer my question about -DVCPKG_HOST_TRIPLET=${HOST_TRIPLET} ?

Thanks for your contribution to vcpkg!

[BillyONeal]

As far as I can see nothing looks for VCPKG_HOST_TRIPLET or HOST_TRIPLET, is this leftover from an earlier revision and no longer used?

[Honeybunch]

Yeah I'm pretty sure that's cruft and can be removed

[dg0yt]

It changes how vcpkg.cmake configures the search path for programs. Cf.

vcpkg/scripts/buildsystems/vcpkg.cmake

Lines 559 to 571 in 561cf50

	option(VCPKG_SETUP_CMAKE_PROGRAM_PATH "Enable the setup of CMAKE_PROGRAM_PATH to vcpkg paths" ON)
	set(VCPKG_CAN_USE_HOST_TOOLS OFF)
	if(DEFINED VCPKG_HOST_TRIPLET AND NOT VCPKG_HOST_TRIPLET STREQUAL "")
	set(VCPKG_CAN_USE_HOST_TOOLS ON)
	endif()
	cmake_dependent_option(VCPKG_USE_HOST_TOOLS "Setup CMAKE_PROGRAM_PATH to use host tools" ON "VCPKG_CAN_USE_HOST_TOOLS" OFF)
	unset(VCPKG_CAN_USE_HOST_TOOLS)
	if(VCPKG_SETUP_CMAKE_PROGRAM_PATH)
	set(tools_base_path "${VCPKG_INSTALLED_DIR}/${VCPKG_TARGET_TRIPLET}/tools")
	if(VCPKG_USE_HOST_TOOLS)
	set(tools_base_path "${VCPKG_INSTALLED_DIR}/${VCPKG_HOST_TRIPLET}/tools")
	endif()

Also #25529.

[Honeybunch]

Oh damn yeah good catch. It's been a hot minute since I've last looked at this

[BillyONeal]

Hmmm... that seems extremely cursed @dg0yt but not looking to un-curse it right now.

We're only building core.

Flatbuffers: Explicitly passed in
ISPC: Guarded by STEAMAUDIO_ENABLE_EMBREE, which is disabled
Sphinx: Guarded by STEAMAUDIO_BUILD_DOCS, which is disabled

I'll remove it.

FrankXie is out of office and their comments appear to have been addressed.

[ethindp]

Steam Audio has a new version (4.6.0). In theory it should be trivial to upgrade (I think?)

[FrankXie05]

@ethindp Maybe we can wait for PR ValveSoftware/steam-audio#399 to be merged into the next version before updating. :)