DEBUG: Executing shell function do_configure -- The C compiler identification is Clang 9.0.0 -- The CXX compiler identification is Clang 9.0.0 -- Check for working C compiler: TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/recipe-sysroot-native/usr/bin/i686-yoe-linux/i686-yoe-linux-clang -- Check for working C compiler: TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/recipe-sysroot-native/usr/bin/i686-yoe-linux/i686-yoe-linux-clang -- 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: TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/recipe-sysroot-native/usr/bin/i686-yoe-linux/i686-yoe-linux-clang++ -- Check for working CXX compiler: TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/recipe-sysroot-native/usr/bin/i686-yoe-linux/i686-yoe-linux-clang++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Looking for C++ include optional -- Looking for C++ include optional - not found CMake Error at CMakeLists.txt:316 (message): gerbera requires C++17 Optional to be available. Check your compiler is >=GCC 7.1 or >=libc++ 5 -- Configuring incomplete, errors occurred! See also "TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/build/CMakeFiles/CMakeOutput.log". See also "TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/build/CMakeFiles/CMakeError.log". WARNING: TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/temp/run.do_configure.17815:1 exit 1 from 'cmake -G 'Ninja' -DCMAKE_MAKE_PROGRAM=ninja $oecmake_sitefile TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/git -DCMAKE_INSTALL_PREFIX:PATH=/usr -DCMAKE_INSTALL_BINDIR:PATH=bin -DCMAKE_INSTALL_SBINDIR:PATH=sbin -DCMAKE_INSTALL_LIBEXECDIR:PATH=libexec -DCMAKE_INSTALL_SYSCONFDIR:PATH=/etc -DCMAKE_INSTALL_SHAREDSTATEDIR:PATH=../com -DCMAKE_INSTALL_LOCALSTATEDIR:PATH=/var -DCMAKE_INSTALL_LIBDIR:PATH=lib -DCMAKE_INSTALL_INCLUDEDIR:PATH=include -DCMAKE_INSTALL_DATAROOTDIR:PATH=share -DCMAKE_INSTALL_SO_NO_EXE=0 -DCMAKE_TOOLCHAIN_FILE=TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/toolchain.cmake -DCMAKE_NO_SYSTEM_FROM_IMPORTED=1 -DWITH_JS=FALSE -DWITH_MAGIC=FALSE -DWITH_EXIF=FALSE -DLIBUUID_INCLUDE_DIRS=TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/recipe-sysroot/usr/include -DLIBUUID_LIBRARIES=-luuid -DWITH_SYSTEMD=FALSE -DWITH_TAGLIB=FALSE -Wno-dev' ERROR: Execution of 'TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/temp/run.do_configure.17815' failed with exit code 1: -- The C compiler identification is Clang 9.0.0 -- The CXX compiler identification is Clang 9.0.0 -- Check for working C compiler: TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/recipe-sysroot-native/usr/bin/i686-yoe-linux/i686-yoe-linux-clang -- Check for working C compiler: TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/recipe-sysroot-native/usr/bin/i686-yoe-linux/i686-yoe-linux-clang -- 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: TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/recipe-sysroot-native/usr/bin/i686-yoe-linux/i686-yoe-linux-clang++ -- Check for working CXX compiler: TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/recipe-sysroot-native/usr/bin/i686-yoe-linux/i686-yoe-linux-clang++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Looking for C++ include optional -- Looking for C++ include optional - not found CMake Error at CMakeLists.txt:316 (message): gerbera requires C++17 Optional to be available. Check your compiler is >=GCC 7.1 or >=libc++ 5 -- Configuring incomplete, errors occurred! See also "TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/build/CMakeFiles/CMakeOutput.log". See also "TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/build/CMakeFiles/CMakeError.log". WARNING: TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/temp/run.do_configure.17815:1 exit 1 from 'cmake -G 'Ninja' -DCMAKE_MAKE_PROGRAM=ninja $oecmake_sitefile TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/git -DCMAKE_INSTALL_PREFIX:PATH=/usr -DCMAKE_INSTALL_BINDIR:PATH=bin -DCMAKE_INSTALL_SBINDIR:PATH=sbin -DCMAKE_INSTALL_LIBEXECDIR:PATH=libexec -DCMAKE_INSTALL_SYSCONFDIR:PATH=/etc -DCMAKE_INSTALL_SHAREDSTATEDIR:PATH=../com -DCMAKE_INSTALL_LOCALSTATEDIR:PATH=/var -DCMAKE_INSTALL_LIBDIR:PATH=lib -DCMAKE_INSTALL_INCLUDEDIR:PATH=include -DCMAKE_INSTALL_DATAROOTDIR:PATH=share -DCMAKE_INSTALL_SO_NO_EXE=0 -DCMAKE_TOOLCHAIN_FILE=TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/toolchain.cmake -DCMAKE_NO_SYSTEM_FROM_IMPORTED=1 -DWITH_JS=FALSE -DWITH_MAGIC=FALSE -DWITH_EXIF=FALSE -DLIBUUID_INCLUDE_DIRS=TOPDIR/build/tmp/work/core2-32-yoe-linux/gerbera/1.3.2-r0/recipe-sysroot/usr/include -DLIBUUID_LIBRARIES=-luuid -DWITH_SYSTEMD=FALSE -DWITH_TAGLIB=FALSE -Wno-dev'