Build a custom kernel for Android emulator

BUILDING.md

git clone https://android.googlesource.com/kernel/goldfish/ -b android-goldfish-3.18
git clone https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/x86/x86_64-linux-android-4.9
cd goldfish
export CROSS_COMPILE=x86_64-linux-android-
export ARCH=x86_64
export PATH=$PATH:/path/to/x86_64-linux-android-4.9/bin
make x86_64_ranchu_defconfig
make menuconfig  # enable overlayfs and namespaces support here
make -j8

Then create an Android virtual device via android avd. Here I use x86-64 image for API 24 (7.0 Nougat). Don't forget to use a larger internal memory size when creating the virtual device. (The default is 200MB and I use 2000MB) After that run the emulator with:

emulator -avd (avd_name) -kernel /path/to/goldfish/arch/x86/boot/bzImage -show-kernel

rudra@rudra-ThinkPad-E470:~/aosp7/goldfish$ make -j4
make: x86_64-linux-android-gcc: Command not found

checkout the correct branch in x86_64-linux-android-4.9 repository:

1. cd x86_64-linux-android-4.9
2. git checkout pie-b4s4-release

now kernel should start compiling

rudra@rudra-ThinkPad-E470:~/aosp7/goldfish$ make -j4
make: x86_64-linux-android-gcc: Command not found

checkout the correct branch in x86_64-linux-android-4.9 repository:

1. cd x86_64-linux-android-4.9

2. git checkout pie-b4s4-release

now kernel should start compiling

Thank You!

Hi, as Android kernel is moving on to v5.4, do you have guide to boot Android emulator with customized kernel v5.4 ？
As I know, latest kernel use clang instead of gcc to compile. And android 5.4 have dozens of modules (.ko) packaged in ramdisk, which make it difficult to customize kernel.

Hi, as Android kernel is moving on to v5.4, do you have guide to boot Android emulator with customized kernel v5.4 ？
As I know, latest kernel use clang instead of gcc to compile. And android 5.4 have dozens of modules (.ko) packaged in ramdisk, which make it difficult to customize kernel.

Hi, I know your post was a while ago, but I ran into the same issue and fixed it. Check out my script rootAVD, there is a little Guide linked to XDA, on how to compile the AVD Kernel, its Modules and install the Modules into the ramdisk.img
It also installs Magisk on the same shot.

i have a black screen after start