Build error in Kde framework 5.80

[linchangyi]

install.sh: 1: [: -a: unexpected operator -- The C compiler identification is GNU 9.3.0 -- The CXX compiler identification is GNU 9.3.0 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- 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/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Found KF5CoreAddons: /usr/lib/x86_64-linux-gnu/cmake/KF5CoreAddons/KF5CoreAddonsConfig.cmake (found version "5.80.0") -- Could NOT find KF5Declarative (missing: KF5Declarative_DIR) -- Could NOT find KF5Declarative: found neither KF5DeclarativeConfig.cmake nor kf5declarative-config.cmake -- Installing in the same prefix as Qt, adopting their path scheme. -- Found KF5Plasma: /usr/lib/x86_64-linux-gnu/cmake/KF5Plasma/KF5PlasmaConfig.cmake (found version "5.80.0") -- Found KF5PlasmaQuick: /usr/lib/x86_64-linux-gnu/cmake/KF5PlasmaQuick/KF5PlasmaQuickConfig.cmake (found version "5.80.0") CMake Error at /usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:146 (message): Could NOT find KF5 (missing: Declarative) (found suitable version "5.80.0", minimum required is "5.38.0") Call Stack (most recent call first): /usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:393 (_FPHSA_FAILURE_MESSAGE) /usr/share/ECM/find-modules/FindKF5.cmake:94 (find_package_handle_standard_args) CMakeLists.txt:18 (find_package)

[psifidotos]

That is not a build error, you miss Declarative development package