Hi,
I am the beginner of QT and got a problem to integrate Qt with X11.
Based on Yocto project, I used "bitbake core-image-x11" to build an X11 image for Renesas RCAR-M2 Koelsch board.
And i tried to integrate QT5(meta-qt5, dizzy branch) into X11 image on Koelsch board.
Finally, The system can boot into X window, and the test application for gles2 can run successfully on the board.
However, I failed to run QT5 application(eg. Qt5_CinematicExperience, qtsmarthome) and got the following error message:

Qt Warning: Could not find a location of the system's Compose files. Consider setting the QTCOMPOSE environment variable.
Qt Warning: Could not find a location of the system's Compose files. Consider setting the QTCOMPOSE environment variable.
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
Cant find EGLConfig, returning null config
Unable to find an X11 visual which matches EGL config 0
Could not initialize OpenGL

The linux kernel version of the image is 3.10.31, and the following is the summary of QTbase configure's log:
Build options:
Configuration .......... accessibility accessibility-atspi-bridge audio-backend c++11 clock-gettime clock-monotonic compile_examples concurrent cross_compile dbus egl egl_x11 evdev eventfd freetype full-config getaddrinfo getifaddrs icu inotify ipv6ifname large-config largefile libudev medium-config minimal-config mremap no-harfbuzz opengl opengles2 openssl-linked pcre png posix_fallocate pulseaudio qpa qpa reduce_exports release shared silent small-config system-jpeg system-png system-zlib xcb xcb-glx xcb-plugin xcb-render xcb-xlib xinput2 xkbcommon-qt xlib xrender
Build parts ............ libs tools
Mode ................... release
Using C++11 ............ yes
Using PCH .............. no
Target compiler supports:
iWMMXt/Neon .......... no/auto

Qt modules and options:
Qt D-Bus ............... yes (loading dbus-1 at runtime)
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 ................... no
CUPS ................... no
Evdev .................. yes
FontConfig ............. no
FreeType ............... qt
Glib ................... no
GTK theme .............. no
HarfBuzz ............... no
Iconv .................. no
ICU .................... yes
Image formats:
GIF .................. yes (plugin, using bundled copy)
JPEG ................. yes (plugin, using system library)
PNG .................. yes (in QtGui, using system library)
journald ............... no
mtdev .................. no
Networking:
getaddrinfo .......... yes
getifaddrs ........... yes
IPv6 ifname .......... yes
OpenSSL .............. yes (linked to the libraries)
NIS .................... no
OpenGL / OpenVG:
EGL .................. yes
OpenGL ............... yes (OpenGL ES 2.x)
OpenVG ............... no
PCRE ................... yes (bundled copy)
pkg-config ............. yes
PulseAudio ............. yes
QPA backends:
DirectFB ............. no
EGLFS ................ no
KMS .................. no
LinuxFB .............. no
XCB .................. yes (system library)
EGL on X ........... yes
GLX ................ yes
MIT-SHM ............ no
Xcb-Xlib ........... yes
Xcursor ............ yes
Xfixes ............. yes
Xi ................. no
Xi2 ................ yes
Xinerama ........... yes
Xrandr ............. yes
Xrender ............ yes
XKB ................ yes
XShape ............. yes
XSync .............. yes
XVideo ............. yes
Session management ..... no
SQL drivers:
DB2 .................. no
InterBase ............ no
MySQL ................ no
OCI .................. no
ODBC ................. no
PostgreSQL ........... no
SQLite 2 ............. no
SQLite ............... no
TDS .................. no
udev ................... yes
xkbcommon .............. yes (bundled copy, XKB config root: /usr/share/X11/xkb)
zlib ................... yes (system library)

Any ideas or suggestions?
Thanks...