Compiling RemixOS kernel

[osvan...@gmail.com]

Hi all,

I created a basic defconfig for my device, and afther that i wanted to inlude;

android/configs/android-base.cfg android/configs/android-recommended.cfg
https://github.com/jide-opensource/remixos-kernel/tree/jide_x86_lollipop/android/configs

ARCH=x86_64 scripts/kconfig/merge_config.sh <path_to>/<device>_defconfig android/configs/android-base.cfg android/configs/android-recommended.cfg
However i get allot messages "not in final .config" and the entries in .config are not changed.

I wonder if i need, ARCH=android-x86_64

becuase there seems to be a custom android-x86_64_defconfig

Any one can help me out on this?

Kernel Source:

https://github.com/jide-opensource/remixos-kernel

[osvan...@gmail.com]

This is all i can find in the make file,

 ifeq ($(ARCH),x86)
 ifeq ($(shell uname -m),x86_64)
 KBUILD_DEFCONFIG := x86_64_defconfig
 else
 KBUILD_DEFCONFIG := i386_defconfig
 endif
 else
 KBUILD_DEFCONFIG := $(ARCH)_defconfig
 endif

[HyperT]

The ARCH=x86_64 looks right to me. This is more for the GCC so the right compiler is used. I don't think it matters too much if your using a x86_64 system to compile for x86_64...

[Michel Steinbusch]

Thanks Hyper,

But i still need this? https://github.com/jide-opensource/remixos-kernel/tree/jide_x86_lollipop/android/configs
I don't get it why it's not writing me a new .config with the recommended options described in there readme.

[HyperT]

Ah I got ya, That seems to be just taking a minimal _defconfig and adding those base/recommended cfgs to it.

The configs are here: https://github.com/jide-opensource/remixos-kernel/tree/jide_x86_lollipop/arch/x86/configs

so ARCH=x86 is probably what you need to use if you want to use that script; alternatively just put a full _defconfig in that folder

[Michel Steinbusch]

So  i'm just new to this all, and thank you for your support.

So the android-x86_64_defconfig is like the .config ? can I just rename it to .config and use the -o option make -j8 -o .config ?
I just need CONFIG_R8188EU=y instead of CONFIG_R8188EU=m :)

[HyperT]

Yeah, also if you issue:
ARCH=x86
make android-x86_64
it automatically uses this _defconfig (copies it to .config in kernel folder)

[Michel Steinbusch]

Thanks, i was able to compile my first kernel, i tought that the included defconfig had the default stock kernel settings, however it seems i was wrong, When it booted I dident see /dev/sdax etc.
dmesg dident give me anything aswell, it was stuck on detecting android and then followed by lots of dots.

[HyperT]

Check the grub; if you can drop to command line [e or c or something]; then:
ls
ls (hd0,gpt1)/ etc. and see if it reports unknown filesystem.

[Michel Steinbusch]

Yhea i did that, driver was missing, ACHI was disabled in the kernel config, i enabled it, itś getting past the searching for android and i see my drives now, but no GUI straight into a shell.

[HyperT]

Have you replaced the system/lib/modules/4.* folder as well?
Checked 'df' and 'mount' from # to see whats mounted.
Typed 'exit' to continue boot?

Just fyi I haven't looked for the module packer script, if you see it.

[Michel Steinbusch]

I did build modules, but itś confusing i have no idea where they are getting placed lol

[HyperT]

I believe this folders the .ko's if you can make sense of it.
https://sourceforge.net/p/android-x86/build/ci/marshmallow-x86/tree/core/tasks/kernel.mk

[Michel Steinbusch]

I figured it out, well i builded it and replaced the modules but still only a shell, iḿ missing something here.

[Michel Steinbusch]

[HyperT]

Any output from dmesg/logcat

Does typing 'exit' do anything?

[Michel Steinbusch]

http://s10.postimg.org/kbiq79zk9/Screenshot_2016_02_16_20_29_15.png

:) i managed it, I think the config file was wrong because i discovered it was using defaults from the current running kernel.

[postad...@gmail.com]

Can you share the make command to start the compilation ?


I tried this one without success:

make isoimage ARCH=x86_64

got this error:

arch/x86/kernel/SSEPlus_float_REF.c:1:0: error: -mpreferred-stack-boundary=3 is not between 4 and 12

[postad...@gmail.com]

1. download Android-x86 source code (branch marshmallow-x86) from http://www.android-x86.org/getsourcecode
2. replace kernel folder with Remix OS Kernel
3. source build/envsetup.sh
4. lunch android_x86_64-userdebug
5. make kernel