how to compile kernel

Posted by lenik in Android, Desire, HTC, kernel on June 28, 2010

In the part 1 I explained how to compile a new kernel, and here’s the explanation how to upload the newly compiled kernel to your device.

1. make sure you really have arch/arm/boot/zImage file (about 2MB in case of HTC Desire/Eclair) present after your kernel compilation was over.
2. download AnyKernel template by koush and unpack it somewhere
3. copy your zImage file to the template /kernel directory, there supposed to be another zImage file there — just replace it
4. go back to the template directory, you will see three subdirectories: META-INF, kernel & system
5. zip them all (zip -r ../update.zip *)
6. sign the update.zip and flash it to your device
7. scripts included in the template will unpack your current boot.img, keep ramdisk, but replace the kermel
8. enjoy!

Big thanks to Bartosz Ponurkiewicz, who gave me nice advices and warned about common problems on the way!

Android,compile kernel, HTC Desire

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How to compile kernel — part 1

Posted by lenik in Android, Desire, HTC, kernel on June 25, 2010

Recently HTC released the kernel source for HTC Desire. Here’s how to compile the kernel source under Ubuntu:

1. download and unpack source code
2. install android SDK andNDK
3. get kernel config from your device (adb pull /proc/config.gz; gunzip config.gz; mv config .config)
4. put .config into the root directory where you unpacked kernel source
5. run “make oldconfig”
6. optionally, if you plan any changes, run “make menuconfig”
7. run “make ARCH=arm CROSS_COMPILE=~/android-ndk-r4/build/prebuilt/linux-x86/arm-eabi-4.4.0/bin/arm-eabi-”, where long and complicated path points to the actual directory where you installed NDK

Wait about 10-20 minutes. You should get the following mesage: