Hi All, day after day Crux becomes more perfect. Everything runs flawlessly as far as the base system and X are installed. However, when I go further, i.e. installing plasma 5 (kde5 repository), many difficulties do appear. The problems of not missing dependences are easily resolved, but many packages cannot be installed: first of all grantlee, that seems very important since it is requested by many packages. Everything seems OK, anyhow the building process exits with many errors. This is the most important part of what I get: # pkgmk -d -i =======> Building '/home/pkgmk/packages/grantlee#5.1.0-1.pkg.tar.gz'. bsdtar -p -o -C /home/pkgmk/work/grantlee/src -xf /home/pkgmk/distfiles/grantlee-5.1.0.tar.gz + build + mkdir build + cd build + cmake ../grantlee-5.1.0 -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTS=OFF -- The C compiler identification is GNU 8.3.0 -- The CXX compiler identification is GNU 8.3.0 -- 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 -- 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 -- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE) -- Could NOT find LCov (missing: LCOV_EXECUTABLE GENHTML_EXECUTABLE) -- Could NOT find Cccc (missing: CCCC_EXECUTABLE) -- Configuring done -- Generating done -- Build files have been written to: /home/pkgmk/work/grantlee/src/build + make Scanning dependencies of target Grantlee_Templates_autogen [ 1%] Automatic MOC for target Grantlee_Templates [ 1%] Built target Grantlee_Templates_autogen Scanning dependencies of target Grantlee_Templates [ 2%] Building CXX object templates/lib/CMakeFiles/Grantlee_Templates.dir/Grantlee_Templates_autogen/mocs_compilation.cpp.o In file included from /usr/include/c++/8.3.0/type_traits:35, from /usr/include/qt5/QtCore/qglobal.h:45, from /usr/include/qt5/QtCore/qchar.h:43, from /usr/include/qt5/QtCore/qstring.h:48, from /usr/include/qt5/QtCore/QString:1, from /home/pkgmk/work/grantlee/src/grantlee-5.1.0/templates/lib/exception.h:26, from /home/pkgmk/work/grantlee/src/grantlee-5.1.0/templates/lib/template.h:24, from /home/pkgmk/work/grantlee/src/grantlee-5.1.0/templates/lib/engine.h:24, from /home/pkgmk/work/grantlee/src/build/templates/lib/Grantlee_Templates_autogen/EWIEGA46WW/moc_engine.cpp:10, from /home/pkgmk/work/grantlee/src/build/templates/lib/Grantlee_Templates_autogen/mocs_compilation.cpp:2: /usr/include/c++/8.3.0/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options. #error This file requires compiler and library support \ I googled and found many posts, but no one resolved my problem. My question is: where exactly to add that -std=c++11 that seems the correcting action? Thanks for an help.