In order to build XOSP for your device, first of all you need to get familiar with Git and Repo.

To initialize your local repository using the XOSP trees, use a command like this:

repo init -u git://github.com/XOSP-Project/platform_manifest.git -b xosp-n

Then to sync up:

repo sync --force-sync

Device	Build Status
angler
armani
bacon
bullhead
d802
hammerhead
huashan
kenzo
lux
mako
oneplus2
oneplus3
onyx
osprey
surnia
Z008
Z00A

• Tested and Working on any version of Ubuntu - 15.10 & 16.04 16.10 (64-bit)
• Any other distribution based of the Ubuntu Distro such as Lubuntu, Xubuntu and etc.
• A Terminal window
• A Good specs of hardware like 8 GB of RAM and an Intel I3 dual core (Minimum)
• A storage unit of any kind (minimum 100 GB). It would be better to use SSD because is more fast during the compliation process
• Some dependencies that should be installed

###Building XOSP ROM for your device

• Preparing Required Binaries and Device Drivers
• Set CCache for Faster Building (Optional)
• Build phase

###Set CCache

  $ export USE_CCACHE=1
  $ prebuilts/misc/linux-x86/ccache/ccache -M 150G

Congratulations,the sources are initialized!

To know how to include propietary vendors files from your device, follow this guide which explains everything you need to know: (http://forum.xda-developers.com/showpost.php?p=54118631&postcount=4)

Once you finished setting up your device tree, you will need to add this line into the xosp.mk of your device:

  $(call inherit-product, vendor/xosp/config/xosp.mk)

If your device is an arm64 architecture based one, then you will have to add also this flag in your xosp.mk:

  IS_ARM64 := TRUE

  $ cd ~/XOSP
  $ source build/./envsetup.sh
  $ brunch <device> -j<number_of_threads>   (USE brunch ALWAYS!)

To get the zip file that has been built, navigate to the out directory and find for the zip file there. If you found it, then congratulations! If you didn't, try retrying the build process but before doing so, ensure you do the following:

  $ cd ~/XOSP
  $ make clean

When you done the initialization once you're free to build now without making that again.

Well you made it my friend, after all these hours passed now you finally got the ROM ready to be flashed through the recovery of your device. Share it on XDA or on every forum,blog site etc... (as you wish). We expect you to contribute as well and to give credits to the XOSP Team and their contributors! Don't forget to sync your repo everytime and build XOSP more than just one because the source get changed almost everyday with new fixes or new features. Don't hesitate to make pull requests because we will take them all in consideration.