/usr/lib/x86_64-linux-gnu/ is in libqt5svg5-dev 5.7.1~20161021-2+b2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/Qt5Svg/
/usr/lib/x86_64-linux-gnu/cmake/Qt5Svg/Qt5SvgConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5Svg/Qt5SvgConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5Svg/Qt5Svg_QSvgIconPlugin.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5Svg/Qt5Svg_QSvgPlugin.cmake
/usr/lib/x86_64-linux-gnu/libQt5Svg.prl
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Svg.pc
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_lib_svg.pri
/usr/lib/x86_64-linux-gnu/libQt5Svg.so