shadowdaoandClaude Sonnet 5
1f342b1971
Records the outcome of f27b1c0 against the actual job log rather than the
job status: the from-source libobs bootstrap configures/builds/installs,
find_package(libobs) resolves through .deps/cmake/libobs, all 6 CTest suites
pass, and build\package\bin\64bit\streamer-tools-camera.dll (136,192 bytes)
is staged beside livekit.dll and livekit_ffi.dll. First completed green
Windows run on this repository. That also retires three separately-unproven
items at once -- the -A x64 fix, the PowerShell rewrite of the Windows steps,
and the add_subdirectory(deps/w32-pthreads) bootstrap patch.
The log also settles which branch of the new code ran: the "w32-pthreads_DIR
not set" message means OBS's own exported package was at
.deps/cmake/w32-pthreads/ the whole time and the fallback find module was
never loaded. The export was never missing, only unfindable -- worth
recording, because "w32-pthreads has no install rules" was the first
hypothesis and it was wrong.
Also narrows when that fallback is exposed at all. It reads artifacts out of
.deps/ and nowhere else, so it is only appended to CMAKE_MODULE_PATH when
this repo's own bootstrap actually produced an obs-studio tree there. A
developer building against an external OBS SDK (STPLUGIN_BOOTSTRAP_OBS=OFF,
or an explicit -Dlibobs_DIR=...) stays on CMake's normal search, where
whatever w32-pthreads package their SDK provides can still win -- a find
module that could only ever fail would have made their error worse, not
better. Linux reconfigures unchanged.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RL8abRmgFXkVASHkkqiJbE
376 lines
20 KiB
CMake
376 lines
20 KiB
CMake
cmake_minimum_required(VERSION 3.19)
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project(obs-streamer-tools-plugin
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VERSION 0.1.0
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DESCRIPTION "OBS Studio source plugin for streamer-tools camera feeds"
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LANGUAGES C CXX
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)
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set(CMAKE_C_STANDARD 11)
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set(CMAKE_C_STANDARD_REQUIRED ON)
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set(CMAKE_CXX_STANDARD 17)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
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set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type" FORCE)
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endif()
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enable_testing()
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list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
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list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/common")
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# --- OBS SDK ---------------------------------------------------------------
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# Linux gets libobs from the distribution (Ubuntu's libobs-dev ships real
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# libobsConfig.cmake), and that path is left exactly as it was.
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#
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# macOS and Windows have no such package, so they use obs-plugintemplate's
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# buildspec bootstrap, trimmed: it downloads the pinned obs-deps bundle and
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# the pinned obs-studio source, then builds and installs just `libobs`. See
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# buildspec.json for why the OBS pin is deliberately low, and
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# cmake/common/buildspec_common.cmake for every change from upstream.
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#
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# STPLUGIN_BOOTSTRAP_OBS=OFF falls back to plain find_package(libobs), for a
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# developer who already has an OBS SDK on their prefix path and does not want
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# a from-source libobs build.
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option(STPLUGIN_BOOTSTRAP_OBS "Download and build libobs from source (macOS/Windows)" ON)
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# Fallbacks for imported targets that were exported under a different
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# configuration name than the one being built, lifted from
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# obs-plugintemplate's cmake/common/bootstrap.cmake. Without these, an
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# imported libobs exported as (say) RelWithDebInfo fails a Release build with
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# "IMPORTED_LOCATION or IMPORTED_IMPLIB not set for imported target
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# OBS::libobs configuration Release".
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set(CMAKE_MAP_IMPORTED_CONFIG_RELEASE Release RelWithDebInfo MinSizeRel None "")
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set(CMAKE_MAP_IMPORTED_CONFIG_RELWITHDEBINFO RelWithDebInfo Release MinSizeRel None "")
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set(CMAKE_MAP_IMPORTED_CONFIG_MINSIZEREL MinSizeRel Release RelWithDebInfo None "")
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set(CMAKE_MAP_IMPORTED_CONFIG_DEBUG Debug RelWithDebInfo Release MinSizeRel None "")
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include(osconfig)
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if(STPLUGIN_BOOTSTRAP_OBS AND (OS_MACOS OR OS_WINDOWS))
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if(OS_MACOS)
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# client-sdk-cpp ships single-arch dylibs, so this plugin is built for
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# one architecture even though the libobs it links is universal.
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if(NOT CMAKE_OSX_ARCHITECTURES)
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set(CMAKE_OSX_ARCHITECTURES "${CMAKE_HOST_SYSTEM_PROCESSOR}" CACHE STRING "" FORCE)
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endif()
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if(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
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set(CMAKE_OSX_DEPLOYMENT_TARGET "13.0" CACHE STRING "" FORCE)
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endif()
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endif()
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include(buildspec)
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endif()
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# --- LiveKit C++ client SDK -------------------------------------------------
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# Pinned, prebuilt release of livekit/client-sdk-cpp, downloaded and unpacked
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# by cmake/LiveKitSDK.cmake, then consumed through its own CMake package
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# config as the LiveKit::livekit imported target. See the design doc's
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# "Resolved (2026-09-07)" section: an exact pin, never "latest".
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set(STPLUGIN_LIVEKIT_SDK_VERSION "1.10.1" CACHE STRING
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"Pinned livekit/client-sdk-cpp release version")
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set(STPLUGIN_LIVEKIT_SDK_TRIPLE "" CACHE STRING
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"Override the client-sdk-cpp release triple (e.g. ubuntu-24.04-x64); empty = autodetect")
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set(STPLUGIN_LIVEKIT_SDK_DIR "${CMAKE_BINARY_DIR}/_deps/livekit-sdk" CACHE PATH
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"Directory the client-sdk-cpp release archive is extracted into (point at a persistent path to cache it across CI builds)")
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# Pinned SHA256 checksums for the client-sdk-cpp v1.10.1 release archives,
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# so the download in cmake/LiveKitSDK.cmake is verified the same way the
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# obs-deps bootstrap next to it already is (see
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# cmake/common/buildspec_common.cmake ~line 324). Each hash below was
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# computed by downloading the real GitHub release asset and running
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# `sha256sum` on it (2026-09-06/07) -- none of these were guessed or copied
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# from an unverified source. To add a hash for a new version or triple:
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# curl -LO https://github.com/livekit/client-sdk-cpp/releases/download/v<VERSION>/livekit-sdk-<TRIPLE>-<VERSION>.<tar.gz|zip>
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# sha256sum livekit-sdk-<TRIPLE>-<VERSION>.*
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# Covers every triple _lk_default_triple() can resolve to for this pinned
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# version: Linux (ubuntu-22.04-x64/arm64), macOS (macos-x64/arm64) and
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# Windows (windows-x64). Verified by extracting each archive
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# (tar tzf / unzip -l) and confirming a real LiveKitConfig.cmake inside --
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# only Linux was also verified by an actual local CMake configure+build in
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# this environment; macOS and Windows were downloaded and hashed but not
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# build-tested here.
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set(_stplugin_livekit_sha256_1.10.1_ubuntu-22.04-x64 "6f4fc8143f36952d42bfd5ff8d1782cf6211ba8fd6b055877e9ef85441d66324")
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set(_stplugin_livekit_sha256_1.10.1_ubuntu-22.04-arm64 "399677167b474b7f107c6937904ea01898c9ec8da648cbed669387e599c6ea45")
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set(_stplugin_livekit_sha256_1.10.1_macos-x64 "7102655c1f2947be4b06a95f9fafa1a11379219328e82ad875e5ebccfc9ac7e3")
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set(_stplugin_livekit_sha256_1.10.1_macos-arm64 "0822af7014519a473c5b5cd019bde58c26cc2bfe5b78e4a790395ead232dc55b")
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set(_stplugin_livekit_sha256_1.10.1_windows-x64 "b9fc6b2865298d7e3d032205d7e74fb9628cfe55a2ed28cb657db0a481cd518c")
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include(LiveKitSDK)
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if(STPLUGIN_LIVEKIT_SDK_TRIPLE)
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set(_stplugin_livekit_triple "${STPLUGIN_LIVEKIT_SDK_TRIPLE}")
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else()
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# Mirrors LiveKitSDK.cmake's own autodetection so the checksum lookup
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# below matches whatever triple livekit_sdk_setup() will actually
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# resolve to and download.
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_lk_default_triple(_stplugin_livekit_triple)
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endif()
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set(_stplugin_livekit_sha256_var
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"_stplugin_livekit_sha256_${STPLUGIN_LIVEKIT_SDK_VERSION}_${_stplugin_livekit_triple}")
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if(DEFINED ${_stplugin_livekit_sha256_var})
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set(_stplugin_livekit_sha256 "${${_stplugin_livekit_sha256_var}}")
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else()
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set(_stplugin_livekit_sha256 "")
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message(WARNING
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"LiveKitSDK: no pinned SHA256 for triple '${_stplugin_livekit_triple}' "
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"at version ${STPLUGIN_LIVEKIT_SDK_VERSION} -- the downloaded archive "
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"will NOT be integrity-checked. Compute one (see the comment above "
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"this block) and add it to CMakeLists.txt.")
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endif()
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if(STPLUGIN_LIVEKIT_SDK_TRIPLE)
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livekit_sdk_setup(
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VERSION "${STPLUGIN_LIVEKIT_SDK_VERSION}"
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SDK_DIR "${STPLUGIN_LIVEKIT_SDK_DIR}"
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TRIPLE "${STPLUGIN_LIVEKIT_SDK_TRIPLE}"
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SHA256 "${_stplugin_livekit_sha256}"
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)
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else()
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livekit_sdk_setup(
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VERSION "${STPLUGIN_LIVEKIT_SDK_VERSION}"
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SDK_DIR "${STPLUGIN_LIVEKIT_SDK_DIR}"
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SHA256 "${_stplugin_livekit_sha256}"
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)
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endif()
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find_package(LiveKit CONFIG REQUIRED)
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add_subdirectory(core)
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# On Windows, OBS's own modern-CMake install layout
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# (obs-studio/cmake/windows/defaults.cmake: OBS_CMAKE_DESTINATION=cmake)
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# installs libobs's CMake package config to <prefix>/cmake/<target>/ --
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# a shape find_package(<pkg> CONFIG) never searches under CMAKE_PREFIX_PATH.
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# CMake's documented Config-mode search suffixes include
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# "<prefix>/(cmake|CMake)/" (the file directly inside that dir, no <name>
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# subdirectory) and "<prefix>/<name>*/(cmake|CMake)/[...]" (a <name>-prefixed
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# directory first) -- neither matches "<prefix>/cmake/<name>*/". Verified
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# empirically: a find_package(libobs CONFIG) run with CMAKE_PREFIX_PATH
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# pointed at a directory laid out exactly like this (cmake/libobs/
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# libobsConfig.cmake underneath it) never even tries that path, confirmed
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# with --debug-find-pkg=libobs.
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#
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# macOS does not have this problem -- its OBS_CMAKE_DESTINATION is
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# "lib/cmake", so the package lands at <prefix>/lib/cmake/libobs/, which
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# matches the standard "<prefix>/lib*/cmake/<name>*/" suffix -- and neither
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# does Linux's libobs-dev, which installs to
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# /usr/lib/<arch-triplet>/cmake/libobs/, the same standard suffix. Windows is
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# the one platform whose own upstream install destination CMake's
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# find_package was never going to locate on its own; this is not caused by,
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# and is not fixed by, the earlier "file INSTALL cannot find
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# obs-frontend-api.dll" error tolerated in
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# cmake/common/buildspec_common.cmake's _setup_obs_studio -- libobs is the
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# FIRST subdirectory obs-studio's modern top-level CMakeLists.txt adds
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# (before libobs-d3d11/-winrt/-opengl, plugins, test/test-input and finally
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# UI), so libobs's own install(EXPORT ...) rules, including this Config file,
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# already ran to completion by the time cmake --install later aborts inside
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# UI/obs-frontend-api's install script.
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#
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# So: point find_package(libobs) directly at the from-source Windows install
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# rather than relying on path-search heuristics that were never going to find
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# it. Guarded by "NOT libobs_DIR" so an explicit -Dlibobs_DIR=... from a
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# developer with their own OBS SDK is never overridden, and by EXISTS so this
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# is a no-op whenever STPLUGIN_BOOTSTRAP_OBS=OFF or the bootstrap didn't
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# reach this point.
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if(OS_WINDOWS AND NOT libobs_DIR)
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set(_stplugin_win_libobs_dir "${CMAKE_CURRENT_SOURCE_DIR}/.deps/cmake/libobs")
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if(EXISTS "${_stplugin_win_libobs_dir}/libobsConfig.cmake")
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set(libobs_DIR "${_stplugin_win_libobs_dir}" CACHE PATH
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"Directory containing libobsConfig.cmake" FORCE)
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message(STATUS
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"libobs_DIR not set; OBS's Windows OBS_CMAKE_DESTINATION=cmake "
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"does not match any of CMake's standard find_package Config-mode "
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"search suffixes, so pointing it directly at the from-source "
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"install: ${_stplugin_win_libobs_dir}")
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endif()
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endif()
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# ...and the exact same problem, one level down, for w32-pthreads.
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#
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# libobs/cmake/os-windows.cmake links `PUBLIC OBS::w32-pthreads`, so
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# obs-studio's libobsConfig.cmake.in carries, verbatim:
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#
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# if(MSVC)
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# find_dependency(w32-pthreads REQUIRED)
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# endif()
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#
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# That call is REQUIRED, it runs from inside libobsConfig.cmake, and until
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# this block existed it aborted the whole configure the moment the libobs_DIR
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# fix above finally succeeded in loading that config file:
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#
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# By not providing "Findw32-pthreads.cmake" in CMAKE_MODULE_PATH this
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# project has asked CMake to find a package configuration file provided by
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# "w32-pthreads", but CMake did not find one.
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# .deps/cmake/libobs/libobsConfig.cmake:30 (find_dependency)
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#
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# This is NOT a missing export. deps/w32-pthreads/CMakeLists.txt ends with
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# `target_export(w32-pthreads)`, which is the same helper libobs itself uses
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# (cmake/common/helpers_common.cmake): it emits install(TARGETS ... EXPORT
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# w32-pthreadsTargets), install(EXPORT ... NAMESPACE OBS::), a generated
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# w32-pthreadsConfig.cmake and its version file, all COMPONENT Development.
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# Those rules *must* exist and *must* have run, for two independent reasons:
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#
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# 1. CMake hard-errors at generate time if a target in one export set links
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# to a target that is in no export set at all ("install(EXPORT
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# "libobsTargets") includes target "libobs" which requires target
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# "w32-pthreads" that is not in any export set"). obs-studio's generate
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# step succeeded, so w32-pthreads was exported.
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# 2. The install rules land under the libobs *directory* (this repo's
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# _patch_obs_studio_w32_pthreads adds deps/w32-pthreads from
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# libobs/CMakeLists.txt), and libobs is the first subdirectory the modern
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# top-level CMakeLists.txt adds -- so its whole subtree installs before
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# the tolerated UI/obs-frontend-api install error aborts the rest.
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#
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# The failure is purely the search path, identical to libobs's: target_export
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# installs the package to "${OBS_CMAKE_DESTINATION}/${target}", which on
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# Windows is <prefix>/cmake/w32-pthreads/ -- a shape find_package never
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# searches. So apply the same remedy CMake's own error message suggests, and
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# do it BEFORE find_package(libobs) below, because that is the call that
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# transitively triggers find_dependency(w32-pthreads).
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#
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# macOS and Linux never reach this: the find_dependency is inside `if(MSVC)`,
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# and OS_WINDOWS gates the block regardless -- a pure no-op off Windows.
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if(OS_WINDOWS AND NOT w32-pthreads_DIR)
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set(_stplugin_win_pthreads_dir "${CMAKE_CURRENT_SOURCE_DIR}/.deps/cmake/w32-pthreads")
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if(EXISTS "${_stplugin_win_pthreads_dir}/w32-pthreadsConfig.cmake")
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set(w32-pthreads_DIR "${_stplugin_win_pthreads_dir}" CACHE PATH
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"Directory containing w32-pthreadsConfig.cmake" FORCE)
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message(STATUS
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"w32-pthreads_DIR not set; libobsConfig.cmake's "
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"find_dependency(w32-pthreads REQUIRED) hits the same "
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"OBS_CMAKE_DESTINATION=cmake search-suffix problem as libobs "
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"itself, so pointing it directly at the from-source install: "
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"${_stplugin_win_pthreads_dir}")
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else()
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# Fall back to a hand-written find module rather than letting the
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# REQUIRED find_dependency kill the configure. cmake/windows is
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# already on CMAKE_MODULE_PATH (see cmake/common/osconfig.cmake), so
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# the fallback module deliberately lives in a subdirectory that is
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# NOT -- a Findw32-pthreads.cmake sitting on the default module path
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# would shadow OBS's own exported package on every build, and its
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# real export is the better answer whenever it is present.
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#
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# ...and only when this repo's own bootstrap actually ran, which is
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# the only situation the fallback module knows how to serve: it reads
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# artifacts out of .deps/ and nowhere else. A developer building
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# against their own external OBS SDK (STPLUGIN_BOOTSTRAP_OBS=OFF, or
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# an explicit -Dlibobs_DIR=...) must be left on CMake's normal search
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# so that whatever w32-pthreads package their SDK does provide still
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# wins -- exposing a find module that can only ever fail would turn
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# their build's outcome into a worse error, not a better one.
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file(GLOB _stplugin_deps_obs_trees "${CMAKE_CURRENT_SOURCE_DIR}/.deps/obs-studio-*")
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if(_stplugin_deps_obs_trees)
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# Reaching here means the bootstrap ran but its install did not
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# produce the export, so say exactly what IS in .deps/cmake/ --
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# the next CI log then answers the question directly instead of
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# costing another run.
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file(GLOB _stplugin_deps_cmake_dirs "${CMAKE_CURRENT_SOURCE_DIR}/.deps/cmake/*")
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message(STATUS
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"No w32-pthreadsConfig.cmake at ${_stplugin_win_pthreads_dir}; "
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"OBS CMake packages actually installed under .deps/cmake: "
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"'${_stplugin_deps_cmake_dirs}'. Falling back to this repo's own "
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"Findw32-pthreads.cmake, which builds OBS::w32-pthreads straight "
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"from the bootstrap's build artifacts.")
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list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/windows/find-fallback")
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endif()
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endif()
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endif()
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find_package(libobs QUIET)
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# OBS::w32-pthreads can come back locationless for exactly the same reason
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# OBS::libobs can (see the block below this one): the package config loads,
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# but the per-configuration w32-pthreadsTargets-release.cmake that carries
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# IMPORTED_IMPLIB/IMPORTED_LOCATION may not have been installed. libobs links
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# it PUBLIC, so it is on this plugin's own link line and an empty location is
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# a generate-time error, not a warning. Repair it from the known install
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# destinations (obs-studio/cmake/windows/defaults.cmake:
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# OBS_EXECUTABLE_DESTINATION=bin/64bit for the DLL, OBS_LIBRARY_DESTINATION=lib
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# for the import library) -- the same repair, and the same reasoning, as the
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# OBS::libobs one.
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if(OS_WINDOWS AND TARGET OBS::w32-pthreads)
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get_target_property(_stplugin_pthreads_implib OBS::w32-pthreads IMPORTED_IMPLIB)
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get_target_property(_stplugin_pthreads_implib_release OBS::w32-pthreads IMPORTED_IMPLIB_RELEASE)
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if(NOT _stplugin_pthreads_implib AND NOT _stplugin_pthreads_implib_release)
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find_file(_stplugin_pthreads_implib_found w32-pthreads.lib
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PATHS "${CMAKE_CURRENT_SOURCE_DIR}/.deps/lib" NO_DEFAULT_PATH)
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find_file(_stplugin_pthreads_dll_found w32-pthreads.dll
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PATHS "${CMAKE_CURRENT_SOURCE_DIR}/.deps/bin/64bit" NO_DEFAULT_PATH)
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if(_stplugin_pthreads_implib_found)
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set_target_properties(OBS::w32-pthreads PROPERTIES
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IMPORTED_IMPLIB "${_stplugin_pthreads_implib_found}")
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if(_stplugin_pthreads_dll_found)
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set_target_properties(OBS::w32-pthreads PROPERTIES
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IMPORTED_LOCATION "${_stplugin_pthreads_dll_found}")
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endif()
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message(STATUS
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"OBS::w32-pthreads had no imported location; pointed it at "
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"${_stplugin_pthreads_implib_found}")
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endif()
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endif()
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endif()
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# The imported OBS::libobs target can come back without a location. OBS 30.0.2
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# installs libobsTargets.cmake but not the per-configuration
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# libobsTargets-<config>.cmake alongside it when libobs is built on its own,
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# and CMake then fails at generate time with:
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#
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# IMPORTED_LOCATION or IMPORTED_IMPLIB not set for imported target
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# "OBS::libobs" configuration "Release".
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#
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# Repair it here rather than fighting OBS's export machinery: the library the
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# bootstrap just built is in a known place, and pointing the imported target
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# at it is exactly what the missing file would have done. Distribution
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# packages (Ubuntu's libobs-dev) export a complete target and never take this
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# path.
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if(libobs_FOUND AND TARGET OBS::libobs)
|
|
get_target_property(_stplugin_obs_location OBS::libobs IMPORTED_LOCATION)
|
|
get_target_property(_stplugin_obs_location_release OBS::libobs IMPORTED_LOCATION_RELEASE)
|
|
get_target_property(_stplugin_obs_implib OBS::libobs IMPORTED_IMPLIB)
|
|
get_target_property(_stplugin_obs_implib_release OBS::libobs IMPORTED_IMPLIB_RELEASE)
|
|
if(NOT _stplugin_obs_location
|
|
AND NOT _stplugin_obs_location_release
|
|
AND NOT _stplugin_obs_implib
|
|
AND NOT _stplugin_obs_implib_release)
|
|
set(_stplugin_deps "${CMAKE_CURRENT_SOURCE_DIR}/.deps")
|
|
if(APPLE)
|
|
set(_stplugin_obs_binary "${_stplugin_deps}/Frameworks/libobs.framework/Versions/A/libobs")
|
|
if(NOT EXISTS "${_stplugin_obs_binary}")
|
|
set(_stplugin_obs_binary "${_stplugin_deps}/Frameworks/libobs.framework/libobs")
|
|
endif()
|
|
if(EXISTS "${_stplugin_obs_binary}")
|
|
set_target_properties(
|
|
OBS::libobs
|
|
PROPERTIES
|
|
IMPORTED_LOCATION "${_stplugin_obs_binary}"
|
|
INTERFACE_INCLUDE_DIRECTORIES "${_stplugin_deps}/Frameworks/libobs.framework/Headers"
|
|
)
|
|
message(STATUS "OBS::libobs had no imported location; pointed it at ${_stplugin_obs_binary}")
|
|
endif()
|
|
elseif(WIN32)
|
|
# obs-studio/cmake/windows/defaults.cmake sets
|
|
# OBS_EXECUTABLE_DESTINATION=bin/64bit (the RUNTIME destination
|
|
# obs.dll installs to as a SHARED_LIBRARY target) and
|
|
# OBS_LIBRARY_DESTINATION=lib (the ARCHIVE destination for
|
|
# obs.lib) -- not a flat "bin", which is what upstream
|
|
# obs-plugintemplate's own equivalent macOS-only repair never had
|
|
# to get right.
|
|
find_file(_stplugin_obs_implib_found obs.lib PATHS "${_stplugin_deps}/lib" NO_DEFAULT_PATH)
|
|
find_file(_stplugin_obs_dll_found obs.dll PATHS "${_stplugin_deps}/bin/64bit" NO_DEFAULT_PATH)
|
|
if(_stplugin_obs_implib_found)
|
|
set_target_properties(OBS::libobs PROPERTIES IMPORTED_IMPLIB "${_stplugin_obs_implib_found}")
|
|
if(_stplugin_obs_dll_found)
|
|
set_target_properties(OBS::libobs PROPERTIES IMPORTED_LOCATION "${_stplugin_obs_dll_found}")
|
|
endif()
|
|
message(STATUS "OBS::libobs had no imported location; pointed it at ${_stplugin_obs_implib_found}")
|
|
endif()
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
if(libobs_FOUND)
|
|
message(STATUS "libobs found (${libobs_DIR}) -- building OBS adapter module")
|
|
add_subdirectory(obs-adapter)
|
|
else()
|
|
message(WARNING "libobs NOT found -- skipping OBS adapter module; core library still builds/tests")
|
|
endif()
|