QT cross compilation for S5P4418 (Nanopi M2)

sap1359

Hi every on
I have a NanoPi M2 board with a cortex-9 and MALI 400 GPU. This product is supported a with an image containing Qt 4.8, but I am using Qt 5.8.
I have cross compiled Qt base (version 5.8) successfully for this product with software rendering back-end (i.e. LinuxFB) and every thing is OK. However, when I cross compiled it with Mali back-end, these messages are shown when I use ssh:

libEGL warning: DRI2: xcb_connect failed
libEGL warning: DRI2: xcb_connect failed
Could not initialize egl display

And these messages are displayed when I run my GUI program directely in device (i.e. non-ssh):

LibEGL warning: DRI2 : failed to authenticate
EGL Error : Couold not create the egl surface : error = 0x3003

According to gdb back trace the QEglfsWindow::create() function is failed.

Here is my build options:

Build options:
  Mode ................................... release; optimized tools
  Building shared libraries .............. yes
  Using C++ standard ..................... C++11
  Using gold linker ...................... yes
  Using new DTAGS ........................ yes
  Using precompiled headers .............. yes
  Using LTCG ............................. no
  Target compiler supports:
    NEON ................................. no
  Build parts ............................ libs
Qt modules and options:
  Qt Concurrent .......................... yes
  Qt D-Bus ............................... yes
  Qt D-Bus directly linked to libdbus .... no
  Qt Gui ................................. yes
  Qt Network ............................. yes
  Qt Sql ................................. yes
  Qt Testlib ............................. yes
  Qt Widgets ............................. yes
  Qt Xml ................................. yes
Support enabled for:
  Accessibility .......................... yes
  Using pkg-config ....................... yes
  QML debugging .......................... yes
  udev ................................... no
  Using system zlib ...................... yes
Qt Core:
  DoubleConversion ....................... yes
    Using system DoubleConversion ........ no
  GLib ................................... yes
  iconv .................................. yes
  ICU .................................... no
  Logging backends:
    journald ............................. no
    syslog ............................... no
    slog2 ................................ no
  Using system PCRE ...................... no
Qt Network:
  getaddrinfo() .......................... yes
  getifaddrs() ........................... yes
  IPv6 ifname ............................ yes
  libproxy ............................... no
  OpenSSL ................................ no
    Qt directly linked to OpenSSL ........ no
  SCTP ................................... no
  Use system proxies ..................... yes
Qt Sql:
  DB2 (IBM) .............................. no
  InterBase .............................. no
  MySql .................................. no
  OCI (Oracle) ........................... no
  ODBC ................................... no
  PostgreSQL ............................. no
  SQLite2 ................................ no
  SQLite ................................. yes
    Using system provided SQLite ......... no
  TDS (Sybase) ........................... no
Qt Gui:
  FreeType ............................... yes
    Using system FreeType ................ yes
  HarfBuzz ............................... yes
    Using system HarfBuzz ................ no
  Fontconfig ............................. yes
  Image formats:
    GIF .................................. yes
    ICO .................................. yes
    JPEG ................................. yes
      Using system libjpeg ............... yes
    PNG .................................. yes
      Using system libpng ................ yes
  OpenGL:
    EGL .................................. yes
    Desktop OpenGL ....................... no
    OpenGL ES 2.0 ........................ yes
    OpenGL ES 3.0 ........................ yes
    OpenGL ES 3.1 ........................ no
  Session Management ..................... yes
Features used by QPA backends:
  evdev .................................. yes
  libinput ............................... no
  mtdev .................................. no
  tslib .................................. no
  xkbcommon-evdev ........................ no
QPA backends:
  DirectFB ............................... no
  EGLFS .................................. yes
  EGLFS details:
    EGLFS i.Mx6 .......................... no
    EGLFS i.Mx6 Wayland .................. no
    EGLFS EGLDevice ...................... no
    EGLFS GBM ............................ no
    EGLFS Mali ........................... yes
    EGLFS Raspberry Pi ................... no
    EGL on X11 ........................... no
  LinuxFB ................................ yes
  Mir client ............................. no
  X11:
    Using system provided XCB libraries .. no
    EGL on X11 ........................... no
    Xinput2 .............................. yes
    XCB XKB .............................. no
    XLib ................................. yes
    Xrender .............................. yes
    XCB GLX .............................. yes
    XCB Xlib ............................. yes
    Using system-provided xkbcommon ...... no
Qt Widgets:
  GTK+ ................................... no
  Styles ................................. Fusion Windows
Qt PrintSupport:
  CUPS ................................... yes

Note: Also available for Linux: linux-clang linux-kcc linux-icc linux-cxx

Note: PKG_CONFIG_LIBDIR automatically set to /mnt/nanopi/usr/lib/pkgconfig:/mnt/nanopi/usr/share/pkgconfig:/mnt/nanopi/usr/lib/arm-linux-gnueabihf/pkgconfig

Note: PKG_CONFIG_SYSROOT_DIR automatically set to /mnt/nanopi

Note: -optimized-tools is not useful in -release mode.

Note: Dropped compiler flags '-pthread' when detecting library 'glib'.

Qt is now configured for building. Just run 'make'.
Once everything is built, you must run 'make install'.
Qt will be installed into '/mnt/nanopi/usr/local/qt5nanopi'.

Prior to reconfiguration, make sure you remove any leftovers from
the previous build.

Warkerings

Hi ! I have the same problem. The QT included in the last IMG doesn't include a Qmake file. So when I compile like you, it give the same error cause we need to interface with the supplied proprietary libs in /opt I think.
On the Raspberry Pi, we need to interface with the VC libs in opt/ to correctly initialise with hardware acceleration, but VC libs are only for the Broadcom chipset on the Pi. On my NanoPI, it is a S5P4418, with a Nexell backend. Maybe we have to do the same with the Nexell libs included on the IMG ? I have a Fire2A and a S2, not sure you have the same configuration as me.
Qt recognize EGL and OpenGLES 2 but can't seem to open a display without these libs.