[Q] Porting ROM - Android Q&A, Help & Troubleshooting

I have some quiestions about porting :
Cyanogenmod how builded together with kernel or seperated needed to be builded ?
Do i need to put another patches or someting else to stock vendor source kernel to will work cyanogenmod ?

Related

[Q] How build the custom kernel in CyanogenMod

HI all,
I'm building a custom kernel that enable V4L2 (usb camera) in Galaxy S2, based on CM ROM follow this oldwiki. cyanogenmod. org/wiki/Building_Kernel_from_source
But I always get error when compile kernel (syntax + missing library...)
Are there anyone has experiment in building custom kernel from CM? or anything ROM that be able to support V4L2?

Editing a device tree

Hello
This is me device tree for CM10
Code:
https://github.com/CyanogenMod/android_device_sony_jlo
Can you point me some base changes I have to make in that device tree to make it working for AOSP?
I've already compiled 3.4 kernel from sony source but I want to try make an AOSP for my device (it already has official JB 4.1.2 and 100% working CM10)

[Q] Compille custom kernel into AOSP source

What would I need to change to source code to compile custom kernel instead of AOSP stock kernel when compiling AOSP?

[HELP] Building rom from kernel source code.?

Hello there,
I am trying to build a rom from scratch for xolo black device. The problem is that they have uploaded only kernel source.
Therefore, I can't figure out how to build the device tree and other things to make a working rom package. If I want to port cm12 to my qualcomm device (unsupported), then what I need to download and the order to executing the commands. I downloaded cm 12 sources but after that cant figure out how to compile other sources and libraries when all I have is kernel source code.
I want to use normal official google version of lollipop/marshmallow as the stock firmware UI is laggy and full of bugs.
I just cant seem to get a straight guide to make a rom from scratch with custom apps and launcher while using the kernel provided by the vendor.
Please help me out.
Thanks.

Kernel source modification for different android versions

I have the kernel source for JellyBean 4.2.2 that boots cyanogenmod 10 and other jellybean ROMS. But when I use that kernel for Kitkat like Cyanogenmod 11 that doesn't work.
To make sure the problem is in the kernel I packed the cm11 boot.img with the jellybean kernel and it didn't boot.
So my question is what modifications does the source need for a newer android version ?
I posted it many times found no answer .

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