So letme tell you how a kernel for x10 can be compiled
1. install ubuntu (through wubi or in vmware will also do) but i prefer on a separate partition.
2. Install the following packages
git-core gnupg sun-java6-jdk flex bison gperf libsdl-dev libesd0-dev libwxgtk2.6-dev build-essential zip curl libncurses5-dev zlib1g-dev
here's how you go about doing it
sudo apt-get install git-core gnupg flex bison gperf libsdl-dev libesd0-dev libwxgtk2.6-dev build-essential zip curl libncurses5-dev zlib1g-dev
sun-java6-sdk is no more officially available through ubuntu repositories
so you will need a workaround.... so here are some helpful articles
In case you are on a 64-bit version of ubuntu, (btw i strongly recommend using a 32 bit version for android development as you'll face various problems with 64-bit at various stages) you'll need these packages too
ia32-libs lib32z1-dev lib32ncurses5-dev gcc-multilib g++-multilib
3. Next you'll need a cross-compiler
for ubuntu, getting the Linaro GCC cross compiler for arm is getting as easy as
sudo apt-get install gcc-arm-linux-gnueabi
4. Now you are pretty much set up to compile kernels. Next we need sources.
So let me link you up to the most common available ones
5. So the source you have downloaded will be either a tar or zip archive. Using archiver, extract it into a directory of your liking.
6. Open terminal and 'cd' into the kernel directory. The kernel directory is the one which contains the folders arch, block, crypto, firmware, drivers .....
for compiling kernel you need to be in the root of this direcrory.
7. So here are a few codes that will get your kernel compiled
To clean source directory : -
ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- make clean
ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- make distclean
To get default configuration
ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- make semc_es209ra_defconfig
To configure the kernel
ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- make menuconfig
Finally... to compile the kernel
ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- make
If all goes well, you'll get this message
Kernel: arch/arm/boot/Image is ready
Kernel: arch/arm/boot/zImage is ready
If you get stuck in between, nothing to fret about. Just post here what problem you faced, amd me or some other helpful soul will help you out
8. I know you are thinking "whew!! are we done??"... ha ha ha!! no buddy!! not yet... much more work to do.
Firstly from you kernel directory go to arch/arm/boot (using a file explorer, not a terminal) and inside you'll find a 2~3 MB sized file called zImage. Copy that file into a separate folder where you'll stach all your finished works.
9. Now we need to compile the wifi modules.
It is imperative to note here that wifi modules should be compiled immediately after kernel has been compiled. DO NOT run "make clean" or "make distclean" commands in the kernel folder before wifi modules have been compiled
in terminal 'cd' to vendor/atheros/wlan/host/ folder
edit the localmake.linux.inc file using a text editor
sudo gedit localmake.linux.inc
edit the line ATH_CROSS_COMPILE_TYPE := arm-eabi-
to ATH_CROSS_COMPILE_TYPE := arm-linux-gnueabi-
also in the line
# ATH_LINUXPATH := < kernel source path >
remove the # (uncomment it) and insert the appropriate kernel source path (the folder that contains arch, crypto, firmware, drivers etc folders.
now to compile wifi modules, run this code
of course, in place of "/path/to/kernel" type the actual path to kernel on your pc
ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- KERNEL_DIR=/path/to/kernel make
this will get your wifi module compiled
go to the folder
and you'll find a file ar6000.ko
transfer that file to the place where you kept your zImage safely earlier.
10. PHew!! done?? ha ha .. no dude.. still not...more work left
now to pack things up, you'll need a ramdisk.
so lets steal a ramdisk from a already working kernel (for stock kernel take stock ramdisk, for cm7/cm9 take respective ramdisk)
take any kernel and unpack it using instructions given here
the file ending with xyz.cpio.gz is the ramdisk. rename the file into "ramdisk" (without any extension) and put this file into the folder where you kept your zImage and wifi module.
Now transfer all these three files into a folder which is accessible from your Windows partition (oops... yeah... without windows you cannot finish this job)
Rest of the steps that follow are to be done on Windows (i have not tried on WINE)
rename zImage to "image"
now using this tool (courtesy DoomLord)
pack your ramdisk and image into a flashable .ftf file
also make a copy of the file ar6000.ko and name it wifi.ko
both these ar6000.ko and wifi.ko files are supposed to be in the folder /system/lib/module of your mobile (please create appropriate flashable zip for the same)
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