The package looks for Qt5Multimedia unconditionally, but ebuild passes -DCMAKE_DISABLE_FIND_PACKAGE_Qt5Multimedia=ON making find_package() call fail.
>>> Working in BUILD_DIR: "/var/portage/tmp/portage/kde-frameworks/kfilemetadata-9999/work/kfilemetadata-9999_build" cmake -C /var/portage/tmp/portage/kde-frameworks/kfilemetadata-9999/work/kfilemetadata-9999_build/gentoo_common_config.cmake -G Unix Makefiles -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTING=OFF -DKDE_INSTALL_USE_QT_SYS_PATHS=ON -DCMAKE_DISABLE_FIND_PACKAGE_EPub=ON -DCMAKE_DISABLE_FIND_PACKAGE_Exiv2=OFF -DCMAKE_DISABLE_FIND_PACKAGE_FFmpeg=OFF -DCMAKE_DISABLE_FIND_PACKAGE_KF5Archive=OFF -DCMAKE_DISABLE_FIND_PACKAGE_Poppler=OFF -DCMAKE_DISABLE_FIND_PACKAGE_Taglib=OFF -DCMAKE_DISABLE_FIND_PACKAGE_Qt5Multimedia=ON -DCMAKE_BUILD_TYPE=Gentoo -DCMAKE_USER_MAKE_RULES_OVERRIDE=/var/portage/tmp/portage/kde-frameworks/kfilemetadata-9999/work/kfilemetadata-9999_build/gentoo_rules.cmake -DCMAKE_TOOLCHAIN_FILE=/var/portage/tmp/portage/kde-frameworks/kfilemetadata-9999/work/kfilemetadata-9999_build/gentoo_toolchain.cmake /var/portage/tmp/portage/kde-frameworks/kfilemetadata-9999/work/kfilemetadata-9999 loading initial cache file /var/portage/tmp/portage/kde-frameworks/kfilemetadata-9999/work/kfilemetadata-9999_build/gentoo_common_config.cmake -- The C compiler identification is GNU 7.1.0 -- The CXX compiler identification is GNU 7.1.0 -- Check for working C compiler: /usr/bin/x86_64-pc-linux-gnu-gcc -- Check for working C compiler: /usr/bin/x86_64-pc-linux-gnu-gcc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/bin/x86_64-pc-linux-gnu-g++ -- Check for working CXX compiler: /usr/bin/x86_64-pc-linux-gnu-g++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- -- Looking for __GLIBC__ -- Looking for __GLIBC__ - found -- Performing Test _OFFT_IS_64BIT -- Performing Test _OFFT_IS_64BIT - Success -- Performing Test HAVE_DATE_TIME -- Performing Test HAVE_DATE_TIME - Success CMake Warning (dev) at /usr/lib64/cmake/Qt5/Qt5ModuleLocation.cmake:4 (set): Policy CMP0053 is not set: Simplify variable reference and escape sequence evaluation. Run "cmake --help-policy CMP0053" for policy details. Use the cmake_policy command to set the policy and suppress this warning. For input: '${_qt5_install_prefix}/Qt5@module@/Qt5@module@Config.cmake' the old evaluation rules produce: '/usr/lib64/cmake/Qt5/Qt5Config.cmake' but the new evaluation rules produce: '/usr/lib64/cmake/Qt5@module@/Qt5@module@Config.cmake' Using the old result for compatibility since the policy is not set. Call Stack (most recent call first): /usr/lib64/cmake/Qt5/Qt5Config.cmake:25 (include) CMakeLists.txt:36 (find_package) This warning is for project developers. Use -Wno-dev to suppress it. CMake Warning at CMakeLists.txt:36 (find_package): Found package configuration file: /usr/lib64/cmake/Qt5/Qt5Config.cmake but it set Qt5_FOUND to FALSE so package "Qt5" is considered to be NOT FOUND. Reason given by package: Failed to find Qt5 component "Multimedia" config file at "/usr/lib64/cmake/Qt5/Qt5Config.cmake" -- Found KF5Archive: /usr/lib64/cmake/KF5Archive/KF5ArchiveConfig.cmake (found version "5.36.0") -- Found KF5: success (found suitable version "5.36.0", minimum required is "5.35.0") found components: Archive -- Found Gettext: /usr/bin/msgmerge (found version "0.19.8.1") -- Found PythonInterp: /usr/bin/python (found version "3.6.1") -- Found KF5I18n: /usr/lib64/cmake/KF5I18n/KF5I18nConfig.cmake (found version "5.36.0") -- Found KF5: success (found suitable version "5.36.0", minimum required is "5.35.0") found components: I18n -- Poppler: Qt5 requires Core -- Found PkgConfig: x86_64-pc-linux-gnu-pkg-config (found version "0.29.2") -- Found Poppler_Core: /usr/lib/libpoppler.so (found version "0.55.0") -- Found Poppler_Qt5: /usr/lib/libpoppler-qt5.so (found version "0.55.0") -- Found Poppler: /usr/lib/libpoppler.so;/usr/lib/libpoppler-qt5.so (found suitable version "0.55.0", minimum required is "0.12.1") found components: Qt5 -- Found Taglib: -L/usr/lib64 -ltag (found suitable version "1.11.1", minimum required is "1.9") -- Found Exiv2: /usr/lib/libexiv2.so (found suitable version "0.26.0", minimum required is "0.21") -- Checking for module 'libavcodec' -- Found libavcodec, version 57.89.100 -- Checking for module 'libavformat' -- Found libavformat, version 57.71.100 -- Checking for module 'libavdevice' -- Found libavdevice, version 57.6.100 -- Checking for module 'libavutil' -- Found libavutil, version 55.58.100 -- Checking for module 'libswscale' -- Found libswscale, version 4.6.100 -- Checking for module 'libpostproc' -- Found libpostproc, version 54.5.100 -- Found FFmpeg: /usr/lib/libavcodec.so;/usr/lib/libavformat.so;/usr/lib/libavutil.so (Required is at least version "1.0") -- Found xattr -- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY -- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY - Success -- Performing Test COMPILER_HAS_HIDDEN_INLINE_VISIBILITY -- Performing Test COMPILER_HAS_HIDDEN_INLINE_VISIBILITY - Success -- Performing Test COMPILER_HAS_DEPRECATED_ATTR -- Performing Test COMPILER_HAS_DEPRECATED_ATTR - Success -- The following RUNTIME packages have been found: * CatDoc, catdoc executable, <http://www.wagner.pp.ru/~vitus/software/catdoc/> Extract text from office 98 files - RUNTIME dependency -- The following OPTIONAL packages have been found: * Qt5Core * KF5Archive (required version >= 5.35.0), KDE Frameworks 5: Archive Framework, <https://download.kde.org/stable/frameworks/> Archive is needed to build ODF and OOXML 2007 extractors * Poppler (required version >= 0.12.1), A PDF rendering library, <http://poppler.freedesktop.org> Support for PDF files * Taglib (required version >= 1.9), Id3 tag reader, <http://developer.kde.org/~wheeler/taglib.html> Support for music metadata * Exiv2 (required version >= 0.21), Image Tag reader, <http://www.exiv2.org> Support for image metadata * PkgConfig * FFmpeg (required version >= 1.0), Video Tag reader, <http://ffmpeg.org> Support for video metadata -- The following REQUIRED packages have been found: * ECM (required version >= 5.35.0), Extra CMake Modules., <https://projects.kde.org/projects/kdesupport/extra-cmake-modules> * Qt5Xml * Gettext * PythonInterp * KF5I18n (required version >= 5.35.0) * KF5 (required version >= 5.35.0) * Xattr, <http://savannah.nongnu.org/projects/attr> -- The following features have been disabled: * QCH, API documentation in QCH format (for e.g. Qt Assistant, Qt Creator & KDevelop) -- The following REQUIRED packages have not been found: * Qt5 (required version >= 5.6.0) CMake Error at /usr/share/cmake/Modules/FeatureSummary.cmake:426 (message): feature_summary() Error: REQUIRED package(s) are missing, aborting CMake run. Call Stack (most recent call first): CMakeLists.txt:130 (feature_summary) -- Configuring incomplete, errors occurred!
Exchanging lines of two find_package(Qt5 ..) calls so that the one with REQUIRED goes last, helps.
I sent a patch upstream: https://phabricator.kde.org/D6366
Thanks, fixed upstream. https://cgit.kde.org/kfilemetadata.git/commit/?id=f30fede21bf0ef36c439be9f6bada2d5647f76ff
