Sailfish browser build error

$ ssh -p 2222 -i /cygdrive/c/SailfishOS/vmshare/ssh/private_keys/engine/mersdk mersdk@localhost
Last login: Sat Jan  9 11:21:19 2016 from 10.0.2.2
[mersdk@SailfishSDK ~]$ sb2 -t SailfishOS-i486-x86 -m sdk-install -R ssu ar http://repo.merproject.org/obs/nemo:/devel:/mw/latest_i486/ nemo-latest-mw
sb2: Error: Invalid target specified, aborting.
[mersdk@SailfishSDK ~]$ sb2 -t SailfishOS-i486 -m sdk-install -R ssu ar http://repo.merproject.org/obs/nemo:/devel:/mw/latest_i486/ nemo-latest-mw
connman not AVAILABLE
DBus call failed, falling back to libssu
[mersdk@SailfishSDK ~]$ git clone https://github.com/Vidhuran/sailfish-browser.git
Cloning into 'sailfish-browser'...
remote: Counting objects: 11502, done.
remote: Total 11502 (delta 0), reused 0 (delta 0), pack-reused 11502
Receiving objects: 100% (11502/11502), 4.52 MiB | 1.04 MiB/s, done.
Resolving deltas: 100% (8215/8215), done.
[mersdk@SailfishSDK ~]$ cd sailfish-browser/
[mersdk@SailfishSDK sailfish-browser]$ mb build -t SailfishOS-i486-x86 rpm/sailfish-browser.spec

  'mb' is obsolete, please use 'mb2'

  Some common commands that replace your mb usage:

    mb2 -t jolla-arm build ....... Build with the "jolla-arm" sb2 target
    mb2 -t jolla-i486 build ...... Build with the "jolla-i486" sb2 target
    mb2 -t jolla-arm -s rpm/foo.spec build ... Specify .spec file to use

  Note that mb2 builds the source tree locally and puts RPMs into "./RPMS/".

[mersdk@SailfishSDK sailfish-browser]$ mb2 -t SailfishOS-i486 -s rpm/sailfish-browser.spec build
No provider of 'pkgconfig(qt5embedwidget) >= 1.12.26' found.
Building target platforms: i486-meego-linux-gnu
Building for target i486-meego-linux-gnu
error: Failed build dependencies:
        pkgconfig(qt5embedwidget) >= 1.12.26 is needed by sailfish-browser-1.13.26-1.i486
        pkgconfig(nemotransferengine-qt5) is needed by sailfish-browser-1.13.26-1.i486
[mersdk@SailfishSDK sailfish-browser]$