Multidisplay support on R Car M2 porter board

[ghost]

Hi,
We are trying to run this multiple display application in porter board(Renesas r-car M2 Porter).
we cross-compiled qt 5.7 with enabled kms plugin, and we are getting below errors.

root@porter:~/test/quickmwtest-master# ./quickmwtest
qt.qpa.egldeviceintegration: EGL device integration plugin keys: ("eglfs_kms")
qt.qpa.egldeviceintegration: EGL device integration plugin keys (sorted): ("eglfs_kms")
qt.qpa.egldeviceintegration: Trying to load device EGL integration "eglfs_kms"
qt.qpa.egldeviceintegration: Using EGL device integration "eglfs_kms"
qt.qpa.eglfs.kms: Loading KMS setup from "example_rcar_h2_config.json"
qt.qpa.eglfs.kms: Configuration:
hwcursor: true
pbuffers: false
separateScreens: false
outputs: QMap(("LVDS", QMap(("mode", QVariant(QString, "1280x720"))("name", QVariant(QString, "LVDS"))("physicalHeight", QVariant(double, 336))("physicalWidth", QVariant(double, 597))))("LVDS1", QMap(("mode", QVariant(QString, "off"))("name", QVariant(QString, "LVDS1"))))("none", QMap(("mode", QVariant(QString, "1280x720"))("name", QVariant(QString, "none")))))
qt.qpa.eglfs.kms: Using DRM device "/dev/dri/card0" specified in config file
qt.qpa.eglfs.kms: Opening device "/dev/dri/card0"
qt.qpa.eglfs.kms: Creating GBM device for file descriptor 4 obtained from "/dev/dri/card0"
loaded module: libgbm_kms.so
Could not open egl display
Aborted

Can you please suggest which configuration i missing to cross-compile qt 5.7 so this error can be solved.

Thanks in advance.
OM