tce-load -i Xorg-7.7-3d-dev sqlite3-dev dbus-dev openssl-dev alsa-dev glib2-dev libmng-dev libpng-dev libtiff-dev cups-dev pulseaudio-dev perl5 icu-dev gst-plugins-base-dev libwebp-dev mtdev-dev ruby-2.2-dev gtk2-dev libpci-dev nss-dev git gperf libgcrypt-dev libgnome-keyring-dev python

cd qt-everywhere-opensource-src-5.6.0

QT5LINK=/usr/local CC="gcc -march=i686 -Os -pipe" CXX="g++ -march=i686 -Os -pipe" ./configure -prefix /usr/local -bindir /usr/local/bin -headerdir /usr/local/include/qt5 [-archdatadir /usr/local/lib/qt5] -plugindir /usr/local/lib/qt5/plugins -libexecdir /usr/local/lib/qt5 -importdir /usr/local/lib/qt5/imports -qmldir /usr/local/lib/qt5/qlm -datadir /usr/local/share/qt5 -docdir /usr/local/share/doc/qt5 -translationdir /usr/local/share/qt5/translations -sysconfdir /usr/local/etc/xdg -examplesdir /usr/local/share/doc/qt5/examples -confirm-license -opensource -release -dbus-linked -openssl-linked -system-sqlite -nomake examples -no-nis -alsa -no-use-gold-linker

Edit /usr/src/qt-everywhere-opensource-src-5.4.1/qtbase/mkspecs/common/gcc-base.conf
O2/O3 -> Os

time make [1h 44m 03s]
[make -j5 module-qtwebengine]

sudo make install

sudo find $QT5PREFIX/lib/pkgconfig -name "*.pc" -exec perl -pi -e "s, -L$PWD/?\S+,,g" {} \;

sudo find $QT5PREFIX/ -name qt_lib_bootstrap_private.pri -exec sed -i -e "s:$PWD/qtbase:/$QT5PREFIX/lib/:g" {} \;

sudo find $QT5PREFIX/ -name \*.prl -exec sed -i -e '/^QMAKE_PRL_BUILD_DIR/d' {} \;

QT5BINDIR=$QT5PREFIX/bin

sudo install -dm755 /usr/local/share/pixmaps

sudo install -Dm644 qttools/src/assistant/assistant/images/assistant-128.png /usr/local/share/pixmaps/assistant-qt5.png

sudo install -Dm644 qttools/src/designer/src/designer/images/designer.png /usr/local/share/pixmaps/designer-qt5.png

sudo install -Dm644 qttools/src/linguist/linguist/images/icons/linguist-128-32.png /usr/local/share/pixmaps/linguist-qt5.png

sudo install -Dm644 qttools/src/qdbus/qdbusviewer/images/qdbusviewer-128.png /usr/local/share/pixmaps/qdbusviewer-qt5.png

for file in moc uic rcc qmake lconvert lrelease lupdate; do
  sudo ln -sfrn $QT5BINDIR/$file /usr/local/bin/$file-qt5
done

   Configure summary

Build type:    linux-g++ (i386, CPU features: none detected)
Platform notes:

            - Also available for Linux: linux-clang linux-kcc linux-icc linux-cxx
        
Build options:
  Configuration .......... accessibility accessibility-atspi-bridge atomic64-libatomic audio-backend avx avx2 c++11 c++14 c++1z clock-gettime clock-monotonic compile_examples concurrent cups dbus dbus-linked egl egl_x11 eglfs eglfs_gbm enable_new_dtags evdev eventfd fontconfig full-config gbm getaddrinfo getifaddrs glib gstreamer-1.0 gtk2 gtkstyle harfbuzz iconv icu inotify ipv6ifname kms large-config largefile libudev linuxfb medium-config minimal-config mremap mtdev opengl openssl-linked pcre png posix_fallocate precompile_header pulseaudio qpa qpa reduce_exports reduce_relocations release release_tools rpath shared small-config sse2 sse3 sse4_1 sse4_2 ssse3 system-freetype system-jpeg system-png system-sqlite system-zlib threadsafe-cloexec use_gold_linker xcb xcb-glx xcb-plugin xcb-render xcb-sm xcb-xlib xinput2 xkbcommon-qt xlib xrender 
  Build parts ............ libs tools
  Mode ................... release; optimized tools
  Using sanitizer(s)...... none
  Using C++ standard ..... c++1z
  Using gold linker....... yes
  Using new DTAGS ........ yes
  Using PCH .............. yes
  Using LTCG ............. no
  Target compiler supports:
    SSE2/SSE3/SSSE3 ...... yes/yes/yes
    SSE4.1/SSE4.2 ........ yes/yes
    AVX/AVX2 ............. yes/yes

Qt modules and options:
  Qt D-Bus ............... yes (linked to dbus-1)
  Qt Concurrent .......... yes
  Qt GUI ................. yes
  Qt Widgets ............. yes
  Large File ............. yes
  QML debugging .......... yes
  Use system proxies ..... no

Support enabled for:
  Accessibility .......... yes
  ALSA ................... yes
  CUPS ................... yes
  Evdev .................. yes
  FontConfig ............. yes
  FreeType ............... yes (system library)
  Glib ................... yes
  GStreamer .............. yes (1.0)
  GTK theme .............. yes
  HarfBuzz ............... yes (bundled copy)
  Iconv .................. yes
  ICU .................... yes
  Image formats: 
    GIF .................. yes (plugin, using bundled copy)
    JPEG ................. yes (plugin, using system library)
    PNG .................. yes (in QtGui, using system library)
  libinput................ no
  Logging backends: 
    journald ............... no
    syslog   ............... no
  mtdev .................. yes (system library)
  Networking: 
    getaddrinfo .......... yes
    getifaddrs ........... yes
    IPv6 ifname .......... yes
    libproxy.............. no
    OpenSSL .............. yes (linked to the libraries)
  NIS .................... no
  OpenGL / OpenVG: 
    EGL .................. yes
    OpenGL ............... desktop
    OpenVG ............... no
  PCRE ................... yes (bundled copy)
  pkg-config ............. yes 
  PulseAudio ............. yes
  QPA backends: 
    DirectFB ............. no
    EGLFS ................ yes
      EGLFS i.MX6 ........ no
      EGLFS i.MX6 Wayland. no
      EGLFS EGLDevice .... no
      EGLFS GBM .......... yes
      EGLFS Mali ......... no
      EGLFS Raspberry Pi . no
      EGLFS X11 .......... yes
    LinuxFB .............. yes
    Mir client............ no
    XCB .................. yes (system library)
      EGL on X ........... yes
      GLX ................ yes
      MIT-SHM ............ yes
      Xcb-Xlib ........... yes
      Xcursor ............ yes (loaded at runtime)
      Xfixes ............. yes (loaded at runtime)
      Xi ................. no
      Xi2 ................ yes
      Xinerama ........... yes (loaded at runtime)
      Xrandr ............. yes (loaded at runtime)
      Xrender ............ yes
      XKB ................ yes
      XShape ............. yes
      XSync .............. yes
      XVideo ............. yes
  Session management ..... yes
  SQL drivers: 
    DB2 .................. no
    InterBase ............ no
    MySQL ................ no
    OCI .................. no
    ODBC ................. no
    PostgreSQL ........... no
    SQLite 2 ............. no
    SQLite ............... yes (plugin, using system library)
    TDS .................. no
  tslib .................. no
  udev ................... yes
  xkbcommon-x11........... yes (bundled copy, XKB config root: /usr/local/share/X11/xkb)
  xkbcommon-evdev......... no
  zlib ................... yes (system library)