#Setting up a minimal tree for building TWRP

###To initialize the main repository:

repo init -u https://github.com/diparthshah/TWRP-manifest.git -b master

repo sync 

BUILDING IT FOR GIONEE M2

$ cd [twrp source which synced from above]

$ source build/envsetup.sh

$ lunch omni_m2-userdebug

$ make clean && make -j# recoveryimage [# : no. of cpu cores ]