I don’t quite understand why find_library fails locate a framework when cross-compiling for tvOS:
CMake Debug Log at qtmultimedia/cmake/FindFFmpeg.cmake:128 (find_library):
find_library called with the following settings:
VAR: AVDEVICE_LIBRARY
NAMES: "avdevice"
Documentation: Path to a library.
Framework
Only Search Frameworks: 0
Search Frameworks Last: 0
Search Frameworks First: 1
AppBundle
Only Search AppBundle: 0
Search AppBundle Last: 0
Search AppBundle First: 1
CMAKE_FIND_USE_CMAKE_PATH: 1
CMAKE_FIND_USE_CMAKE_ENVIRONMENT_PATH: 1
CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH: 0
CMAKE_FIND_USE_CMAKE_SYSTEM_PATH: 1
CMAKE_FIND_USE_INSTALL_PREFIX: 1
find_library considered the following locations:
/Users/developer/Documents/Qt-build/install/lib/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Users/developer/Documents/Qt-build/install/lib/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Users/developer/Documents/Qt-build/install/lib/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Users/developer/Documents/Qt-build/install/lib/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Users/developer/Documents/Qt-build/install/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Applications/Xcode-15.1.0.app/Contents/Developer/Platforms/AppleTVSimulator.platform/Developer/SDKs/AppleTVSimulator17.2.sdk/usr/lib/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Applications/Xcode-15.1.0.app/Contents/Developer/Platforms/AppleTVSimulator.platform/Developer/SDKs/AppleTVSimulator17.2.sdk/usr/lib/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Applications/Xcode-15.1.0.app/Contents/Developer/Platforms/AppleTVSimulator.platform/Developer/SDKs/AppleTVSimulator17.2.sdk/usr/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Applications/Xcode-15.1.0.app/Contents/Developer/Platforms/AppleTVSimulator.platform/Developer/SDKs/AppleTVSimulator17.2.sdk/usr/lib/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Applications/Xcode-15.1.0.app/Contents/Developer/Platforms/AppleTVSimulator.platform/Developer/SDKs/AppleTVSimulator17.2.sdk/usr/lib/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Applications/Xcode-15.1.0.app/Contents/Developer/Platforms/AppleTVSimulator.platform/Developer/SDKs/AppleTVSimulator17.2.sdk/usr/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Applications/Xcode-15.1.0.app/Contents/Developer/Platforms/AppleTVSimulator.platform/Developer/SDKs/AppleTVSimulator17.2.sdk/System/Library/Frameworks/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Applications/Xcode-15.1.0.app/Contents/Developer/Platforms/AppleTVSimulator.platform/Developer/SDKs/AppleTVSimulator17.2.sdk/System/Library/Frameworks/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Users/developer/Documents/Qt-build/Qt-appletvsimulator/src/Qt-build/qtbase/lib/cmake/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Users/developer/Documents/Qt-build/Qt-appletvsimulator/src/Qt-build/qtbase/lib/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/Users/developer/Documents/Qt-build/Qt-appletvsimulator/src/Qt-build/qtbase/lib/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
/usr/local/(lib)avdevice(\.tbd|\.dylib|\.so|\.a)
The item was not found.
The library is bundled in a framework and available at /Users/developer/Documents/Qt-build/install/lib/libavdevice.framework/libavdevice. But this path was not even considered, as you can see from the output above.
At the same time find_path has no problem with it:
CMake Debug Log at qtmultimedia/cmake/FindFFmpeg.cmake:117 (find_path):
find_path called with the following settings:
VAR: AVDEVICE_INCLUDE_DIRS
NAMES: "libavdevice/avdevice.h"
Documentation: Path to a file.
Framework
Only Search Frameworks: 0
Search Frameworks Last: 0
Search Frameworks First: 1
AppBundle
Only Search AppBundle: 0
Search AppBundle Last: 0
Search AppBundle First: 1
CMAKE_FIND_USE_CMAKE_PATH: 1
CMAKE_FIND_USE_CMAKE_ENVIRONMENT_PATH: 1
CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH: 0
CMAKE_FIND_USE_CMAKE_SYSTEM_PATH: 1
CMAKE_FIND_USE_INSTALL_PREFIX: 1
find_path considered the following locations:
/Users/developer/Documents/Qt-build/install/Users/developer/Documents/Qt-build/Qt-appletvsimulator/src/Qt-build/qtbase/lib/cmake/include/ffmpeg/libavdevice.framework/Headers/avdevice.h
/Users/developer/Documents/Qt-build/install/Users/developer/Documents/Qt-build/Qt-appletvsimulator/src/Qt-build/qtbase/lib/cmake/include/include/libavdevice.framework/Headers/avdevice.h
/Users/developer/Documents/Qt-build/install/Users/developer/Documents/Qt-build/Qt-appletvsimulator/src/Qt-build/qtbase/lib/cmake/include/libavdevice.framework/Headers/avdevice.h
/Users/developer/Documents/Qt-build/install/Users/developer/Documents/Qt-build/Qt-appletvsimulator/src/Qt-build/qtbase/lib/cmake/ffmpeg/libavdevice.framework/Headers/avdevice.h
/Users/developer/Documents/Qt-build/install/Users/developer/Documents/Qt-build/Qt-appletvsimulator/src/Qt-build/qtbase/lib/cmake/include/libavdevice.framework/Headers/avdevice.h
/Users/developer/Documents/Qt-build/install/Users/developer/Documents/Qt-build/Qt-appletvsimulator/src/Qt-build/qtbase/lib/cmake/libavdevice.framework/Headers/avdevice.h
/Users/developer/Documents/Qt-build/install/lib/ffmpeg/libavdevice.framework/Headers/avdevice.h
/Users/developer/Documents/Qt-build/install/lib/include/libavdevice.framework/Headers/avdevice.h
The item was found at
/Users/developer/Documents/Qt-build/install/lib/libavdevice.framework/Headers/avdevice.h
Is there a configuration variable or find_library setting that may prevent it from looking for frameworks?