@UniSuperBox Thanks I'll look into that. I have my device's vendor repos. I don't know about vendor/qcom. Can you share the repo that has this. I guess that is common for all Qualcomm devices.

I have a Zuk Z1 which sports a Qcom 801 (similar to OnePlus One). I have set up all the device repos and synced successfully. But when I build I an error (final build error) :

make: *** No rule to make target 'libqmi', needed by '/home/aki237/phablet/out/target/product/ham/obj/EXECUTABLES/wpa_supplicant_intermediates/config.o'.  Stop.

Using the cm-12.1 branch.
Every other targets needed for the final image are built.
This is the .repo/local_manifests/zuk_ham.xml file for my device

<?xml version="1.0" encoding="UTF-8"?>
<manifest>
  <remote name="theMuppets"
          fetch="https://github.com/TheMuppets"
          revision="refs/heads/cm-12.1" />
  <project name="android_device_zuk_ham" path="device/zuk/ham/" remote="cm" revision="cm-12.1" />
  <project name="android_device_qcom_common" path="device/qcom/common/" remote="cm" revision="cm-12.1"/>
  <project name="android_kernel_cyanogen_msm8974" path="kernel/cyanogen/msm8974/" remote="cm" revision="cm-12.1"/>
  <project name="proprietary_vendor_zuk" path="vendor/zuk/" remote="theMuppets" revision="cm-12.1"/>
</manifest>

Host Build system :

OS : Arch Linux
Linux : 4.12.13
gcc : 7.2