how to compile kernel

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本文介绍如何在Ubuntu下为HTC Desire编译内核源代码，并将新内核上传到设备的方法。首先下载并解压源代码，安装Android SDK和NDK，从设备获取配置文件。然后设置.config文件，运行make oldconfig和make menuconfig进行配置，最后使用特定命令编译。

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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.

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.
download AnyKernel template by koush and unpack it somewhere
copy your zImage file to the template /kernel directory, there supposed to be another zImage file there — just replace it
go back to the template directory, you will see three subdirectories: META-INF, kernel & system
zip them all (zip -r ../update.zip *)
sign the update.zip and flash it to your device
scripts included in the template will unpack your current boot.img, keep ramdisk, but replace the kermel
enjoy!

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

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:

download and unpack source code
install android SDK and NDK
get kernel config from your device (adb pull /proc/config.gz; gunzip config.gz; mv config .config)
put .config into the root directory where you unpacked kernel source
run “make oldconfig”
optionally, if you plan any changes, run “make menuconfig”
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: