Related
I couldn't figure out how to compile a module for stock kernel - I kept getting the following in dmesg:
Code:
<module>: disagrees about version of symbol module_layout
I sent a message to Samsung Open Source Release Center on Friday and received a very helpful response yesterday. Basically, c1_rev02_defconfig contains some debug options that are not set in the actual kernel. These are the options that should not be set in the config:
Code:
CONFIG_DEBUG_PREEMPT
CONFIG_DEBUG_RT_MUTEXES
CONFIG_DEBUG_SPINLOCK
CONFIG_DEBUG_MUTEXES
CONFIG_PROFILING
CONFIG_PERF_EVENTS
CONFIG_PERF_COUNTERS
CONFIG_LATENCYTOP
CONFIG_FTRACE
You can use the attached script to modify all these values (the script was also supplied by Samsung, although it was syntactically incorrect and a couple of modifications were necessary to make it work). I have included a copy of the c1_rev02_defconfig with these modifications.
Using this config, I was finally able to compile modules that can actually be loaded on the device
Kudos to Samsung for sending me this information.
Nice info I guess that will help out the people who had issues with kernel modules on stock ROMs...
jps1974 said:
Kudos to Samsung for sending me this information.
Click to expand...
Click to collapse
No, that is the stuff they should put on their server. Makes you wonder what else they haven't released. Every time they make modifications to the GPL open source code (eg. kernel) and release a new version, they must release the code, and the exact same files they used to build it.
Thanks
That was the info I missed. I have successfully compiled cifs for kf1.
Sent from my GT-I9100 using XDA App
You know guys if there is a basic tutorial available online?.
Thank you!
Hi, I am new to compile modules for android (new to compile kernel anyway)
thanks for your info and config, I am now able to compile modules.
I had a problem on the compiled modules tho, wonder can anyone please point me some direction?
when I insmod the ko, dmesg gives me:
xyz.ko : no symbol version for module_layout
Any hint?
more info, I am compiling like:
I am aiming on compiling to for stock ROM, uname -r > 2.6.35.7-I9100XWKDD-CL161513
- I read, and follow base on http://forum.xda-developers.com/showthread.php?t=1113191
- kernel source from: SHW-M250L kernel source from OSRC, https://opensource.samsung.com/
- .config file of this post, select my wanted modules using make menuconfig
- then make ARCH=arm CROSS_COMPILE=__MYPATH__/bin/arm-none-eabi- modules
Thanks!
Hi,
I'm using insecure kernel :
Code:
#uname -r
2.6.35.7-I9100XWKE2-CL187606
I cross compiled modules using your config file but each time I'm trying to insmod it, I have: failed (Exec format error)
and busybox insmod gives me a invalid module format error
I use the commands :
Code:
make ARCH=arm CROSS_COMPILE=/opt/toolchains/arm-2009q3/bin/arm-none-linux-gnueabi- menuconfig
make ARCH=arm CROSS_COMPILE=/opt/toolchains/arm-2009q3/bin/arm-none-linux-gnueabi- modules
So I don't really know where I'm wrong here
alx5962 said:
Hi,
I'm using insecure kernel :
Code:
#uname -r
2.6.35.7-I9100XWKE2-CL187606
I cross compiled modules using your config file but each time I'm trying to insmod it, I have: failed (Exec format error)
and busybox insmod gives me a invalid module format error
I use the commands :
Code:
make ARCH=arm CROSS_COMPILE=/opt/toolchains/arm-2009q3/bin/arm-none-linux-gnueabi- menuconfig
make ARCH=arm CROSS_COMPILE=/opt/toolchains/arm-2009q3/bin/arm-none-linux-gnueabi- modules
So I don't really know where I'm wrong here
Click to expand...
Click to collapse
can you do a dmesg here?
I "think" I am on a same boat as you are on the error tho.....
I didn't checked dmesg, shame on me !
so the error is :
joydev: no symbol version for module_layout
I used your config file, do I need to fix config each time I update with menuconfig ?
alx5962 said:
I didn't checked dmesg, shame on me !
so the error is :
joydev: no symbol version for module_layout
I used your config file, do I need to fix config each time I update with menuconfig ?
Click to expand...
Click to collapse
dmesg is good to read, we are both compiling the same module (joydev)
the config file is not from me, is from jps1974.
no I don't think you need to fix unless you uses the build_kernel.sh unmod, since it cp the defconfig everytime, still I face the same problem...
Instead of SHW-M250L kernel source from OSRC, I just did a quick change to GT-I9100_HK_Opensource.zip
A little bit different on the package, but still the same work flow and results...
.config file:
cp ~/sgs2/9100i_hk/arch/arm/configs/c1_rev02_defconfig ~/sgs2/9100i_hk/kernel/.config
./fix_config.sh
make ARCH=arm CROSS_COMPILE=[PATH_TO_G++LITE_BIN] modules
compile without problem, but no luck, insmod still report:
insmod: init_module '/lib/modules/joydev.ko' failed (Exec format error)
dmesg | grep joy report:
joydev: no symbol version for module_layout
Any help, any directions?
Thanks in advance!!!
I used the european I9100 source from the samsung site and the config file from the opening post when I successfully compiled my modules.
Sent from my GT-I9100 using XDA App
richyy74 said:
I used the european I9100 source from the samsung site and the config file from the opening post when I successfully compiled my modules.
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
YES SIR, will do try this src next!!!!!
richyy74 would u mind share with us which kernel are you at on your phone?
and which version of toolchain u are using on the compile?
Thanks.
A bit of update, just try with GT-I9100_Opensource.zip, nope, still no luck........
I start to think would that be problem of toolchain (which in the readme of the zip from Samsung, they are using 2009q3 while I am using the current 2011 build), or it is possible problem because my/our unsecure kernel (2.6.35.7-I9100XWKDD-CL161513)...
update: Roll back on 2009q3, nope, no luck.............
I can only thinks that it is due to the kernel I am using.............
I compiled for ke7 and kf1 cifs, slow-work and cpu governor modules.
I used the 2009 gnu/linux toolchain from codesourcery /it ends with 67 something/
I never succeded with the version mentioned in the readme.
Sent from my GT-I9100 using XDA App
richyy74 said:
I compiled for ke7 and kf1 cifs, slow-work and cpu governor modules.
I used the 2009 gnu/linux toolchain from codesourcery /it ends with 67 something/
I never succeded with the version mentioned in the readme.
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
Thanks for your direction, will do more test after my "should have slept" 5 hours session.... which end up in data center instead of bed...
utp said:
Thanks for your direction, will do more test after my "should have slept" 5 hours session.... which end up in data center instead of bed...
Click to expand...
Click to collapse
The "exec format error" means that you compiled it for the wrong architecture.
To see which arch the kernel module was compiled for, use the "file" command (found on any Linux computer but not present on the phone itself).
The file command is an extremely useful function for identifying files.
So, at a terminal, type:
Code:
file -k /user/home/output/example.ko
It should output information on the file, which will clarify whether it was statically built, which architecture, etc. Examples:
Dynamically linked executable:
Code:
"ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), not stripped"
Statically linked executable:
Code:
"ELF 32-bit LSB executable, ARM, version 1 (SYSV), statically linked, stripped"
Object file:
Code:
"ELF 32-bit LSB relocatable, ARM, version 1 (SYSV), not stripped"
Most importantly, if it doesn't say 32bit ARM, it will not work.
So the module I cross-compiled gives me :
joydev.ko: ELF 32-bit LSB relocatable, ARM, version 1 (SYSV), not stripped.
So it was correctly compiled, I may need to try another toolchain.
Using Sourcery G++ Lite 2009q3-68 for ARM EABI toolchain, still have the issue.
So as I use an insecure kernel, I may need to ask the author what compiler he used for it.
After searching around , it seems there are several ways to compile Busybox.
Codesourcery toolchain direct compile method
http://mobisocial.stanford.edu/news/2011/02/compile-busybox-on-android-os/
http://omappedia.org/wiki/Android_Installing_Busybox_Command_Line_Tools
Running make gives:
gcc: error trying to exec 'cc1': execvp: No such file or directory
What exact folder belongs in the path?
What exact statement belongs for the cross compiler prefix in make menuconfig?
Source integration method
https://github.com/Gnurou/busybox-android
This method wants you to include the files with the android source and rebuild.
Is there a way to instead compile this directly?
Scripted NDK compile method
http://matrixrewriter.com/wiki/tiki-index.php?page=Building+BusyBox+binaries+for+Android
This method goes well until near the end of the script when the script returns:
/usr/include/string.h.274: error: expected ')' before '!=' token
I am completely lost after searching for this error.
Which of these three methods, if any, is best? Is there another easier way?
After numerous requests I've received from users concerning how-to build kernels, this guide will mostly answer your need to do so.
This guide will be separated in 3 distinct parts: Downloading sources, Building the actual kernel and making a working boot image and or zImage. So let's begin!!
Requirements: A linux computer
Part 1: Downloading sources
Before bulding any kernels, you must have it's source code. Every Android device manufacturers have the OBLIGATION to post them in order to comply with the GPL (GNU General Public License). You can mostly find them in their developpers specified site. You have two ways of download the required source in order to build a kernel: The manufacturer website or git.
1.1: Downloading using the manufacturer's website
You can download your Galaxy Player kernel source using mostly this website: opensource.samsung.com
When you're in it, you can go to the MP3 players section and take the source according to your device. To get the kernel source, unzip the xxxopensource.zip and you should see 2 separate files. Unzip the one with the mention KERNEL in it, it is your kernel.
1.2: Using git
Some of you may know it, some others not. For those who don't know what git is, here's a little explication from it's website
Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
Click to expand...
Click to collapse
A lot of developpers from around the world do use git because of it ease of use. There are several websites that uses the git protocol. The two most known are github and gitbucket. In order to download your kernel source, you must have found someone who uploaded it into these websites. For this example we will use the Cyanogenmod github's profile. You can download the source with 2 ways:
First way
1. Go into a existing kernel source repository (for example this one: https://github.com/CyanogenMod/android_kernel_samsung_aries)
2. Click the Download zip button situated at the mid-right
3. Unzip the zip and you should find your kernel source.
Note: When using this method, you must be sure of the branch choosen. Problems can happen if the wrong branch is used.
Second way
Note: You must have the git dependencies for linux. To download them for Debian, Ubuntu, please run this command: 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, ia32-libs, lib32z1-dev, lib32ncurses5-dev, gcc-multilib, g++-multilib
1. Go into a existing kernel source repository (https://github.com/CyanogenMod/android_kernel_samsung_aries)
2. We're going to "clone" the repository, to do so you will so this particular command:
Code:
git clone https://github.com/CyanogenMod/android_kernel_samsung_aries.git aries
(the second aries word will be the name of the actual folder)
If you want to download another branch (because the one downloaded is the one shown in the website)
Code:
git clone https://github.com/CyanogenMod/android_kernel_samsung_aries.git -b jellybean aries
(where's the -b means branch)
You should have your kernel source named aries output in the folder you specified.
Second part will cover mostly how to build a kernel.
Part 2 Building an actual kernel
In order to build a kernel, you must use an arm toolchain.
The GNU toolchain is a blanket term for a collection of programming tools produced by the GNU Project.
Click to expand...
Click to collapse
Here's a zip containing the arm-eabi-4.4.3 and arm-androideabi-4.6 toolchains
Toolchains Download
2.1 Exporting the toolchain path
Once you've downloaded a toolchain and are ready to build the kernel source into a kernel binary, enter to the directory of that said kernel, (cd aries in this case). You must export the location of your toolchain so the kernel source can know from where it has to build. To do so:
For arm-eabi-4.4.3
Code:
"export CROSS_COMPILE=~/home/yourusername/toolchains/arm-eabi-4.4.3/bin/arm-eabi-"
"export ARCH=arm"
For arm-linux-androideabi-4.6
Code:
"export CROSS_COMPILE=~/home/yourusername/toolchains/arm-linux-androideabi-4.6/bin/arm-linux-androideabi-"
"export ARCH=arm"
2.2 Using a config file
In order to build a kernel, you MUST use a config file which defines the device's components. The easiest way of doing so is to take the manufacturer's stock configuration file (generaly it's a defconfig file found in arch/arm/configs). To create one, you use the make menuconfig command while in your kernel root directory. If you use a different source than your manufacturer one, You have to either ask the developper or to search for this file. (I can't say really much about it ).
2.3 Building the kernel
Once you've your config file and toolchain set up, you can begin the build. To do so you execute these command:
Code:
make cyanogenmod_galaxys_defconfig (This is just as a example, replace it by whatever your defconfig is)
make -jx (x is the number of jobs your computer can do a the same time. The recommended way to know how many to use is to take the number of cores in your CPU +1
Depending on the number of threads (jobs) used, it will be either long or not to compile your kernel. (Generally it takes between 5-15 minutes to compile a single kernel).
Once your kernel have been built, you will have it into the form of a file named zImage situated in arch/arm/boot. This kernel is usable for some devices, however it is not usable for ours. DO NOT EVER EVER FLASH THIS BINARY. I'M NOT RESPONSIBLE FOR ANY BRICKS!!
The third part will help you getting a bootable kernel for your device.
Part 3: Making a bootable kernel
Note: This is a in-progress part so it may be unclear to some people. I will try to do it as much as understandable for everybody.
The kernel binary obtained at the second post is mostly not bootable due to the the fact that the initramfs isn't inclued. The initramfs is the actual ramdisk of your device. To find one... well you must find it (I can't really do anything for you). If you do have one initramfs in a folder, you must specify it in the config file with this current line:
Code:
CONFIG_INITRAMFS_SOURCE=""
Once this has been applied, you can make build this kernel and it should boot
Note that this applies mostly to the model of the 4.0 and 5.0 (and for GB as well). 3.6 and 4.2 uses a different method of using a boot image
One last time...
thanks!! really gonna try this sometimes!!! (once you get part two and three out of the tutorial XD )
If someone is interested in the config file for the Galaxy Player 3.6, he can find it on my GitHub: http://www.github.com/team-hurricane-xda.
How to set it up:
0. Download the config file
1. Rename the config file to aalto-deconfig
2. Copy the file to <kernelsource>/arch/arm/config
3. cd ~/path/to/kernel
4. make aalto-deconfig
5. make
MrBrubble
Sent from my YP-GS1 using xda app-developers app
Build_Error
I've searched and haven't found a straight answer, i get the same build error on every kernel i try to build. Even on this one. Any help is appreciated.
Code:
make: /home/alex/home/alexandroid_toolchains/arm-eabi-linaro-4.6.2gcc: Command not found
scripts/kconfig/conf --silentoldconfig Kconfig
make: /home/alex/home/alexandroid_toolchains/arm-eabi-linaro-4.6.2gcc: Command not found
CHK include/linux/version.h
UPD include/linux/version.h
CC scripts/mod/empty.o
/bin/sh: 1: /home/alex/home/alexandroid_toolchains/arm-eabi-linaro-4.6.2gcc: not found
make[2]: *** [scripts/mod/empty.o] Error 127
make[1]: *** [scripts/mod] Error 2
make[1]: *** Waiting for unfinished jobs....
HOSTCC scripts/selinux/genheaders/genheaders
HOSTCC scripts/selinux/mdp/mdp
make: *** [scripts] Error 2
make: *** Waiting for unfinished jobs..
This is in: file system/usr/include/linux>version.h
#define LINUX_VERSION_CODE 197895
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
Anything in particular that should be here?
Also I have tried to use the linaro toolchains and the one included in the ndk.
2.1 Exporting the toolchain path
Once you've downloaded a toolchain and are ready to build the kernel source into a kernel binary, enter to the directory of that said kernel, (cd aries in this case). You must export the location of your toolchain so the kernel source can know from where it has to build. To do so:
For arm-eabi-4.4.3
Code:
"export CROSS_COMPILE=~/home/yourusername/toolchains/arm-eabi-4.4.3/bin/arm-eabi-"
"export ARCH=arm"
For arm-linux-androideabi-4.6
Code:
"export CROSS_COMPILE=~/home/yourusername/toolchains/arm-linux-androideabi-4.6/bin/arm-linux-androideabi-"
"export ARCH=arm"
2.2 Using a config file
Can you please explain where I need to put the folders/files to make this cmd work. I am using windows7 if that helps. I currently have them in the C:\ thanks. I am hung up here and would greatly appreciate some extra guidance.
po8pimp said:
2.1 Exporting the toolchain path
Once you've downloaded a toolchain and are ready to build the kernel source into a kernel binary, enter to the directory of that said kernel, (cd aries in this case). You must export the location of your toolchain so the kernel source can know from where it has to build. To do so:
For arm-eabi-4.4.3
Code:
"export CROSS_COMPILE=~/home/yourusername/toolchains/arm-eabi-4.4.3/bin/arm-eabi-"
"export ARCH=arm"
For arm-linux-androideabi-4.6
Code:
"export CROSS_COMPILE=~/home/yourusername/toolchains/arm-linux-androideabi-4.6/bin/arm-linux-androideabi-"
"export ARCH=arm"
2.2 Using a config file
Can you please explain where I need to put the folders/files to make this cmd work. I am using windows7 if that helps. I currently have them in the C:\ thanks. I am hung up here and would greatly appreciate some extra guidance.
Click to expand...
Click to collapse
zaclimon said:
...
Requirements: A linux computer
...
Click to expand...
Click to collapse
It's in the OP
seriously I must have totally missed that, I read it over again just to make sure. I will try it again in Ubuntu. Thanks for such a quick reply and apologize for my ignorance. Most things are compiled using Linux, however some I have been doing with windows lately so my assumptions got the best of me it seems. Thanx again
Ok so I am at the point where I need to make the Kernel. I am at this point:
make cyanogenmod_galaxys_defconfig (This is just as a example, replace it by whatever your defconfig is)
My question is which .defconfig do I use and how can I find the current one running on my device? I am assuming the best to fit all different platforms would be to chose the "android_hugo_r03_eng_defcongfig". Is this correct. I currently own the USA model if that helps. However I want to be able to help out all models without building 3 different kernels. Thank you in advance.
Here are the options available:
android_hugop2p_r01_eng_defcongfig
android_hugop2p_r01_user_defcongfig
android_hugop2p_r02_eng_defcongfig
android_hugop2p_r02_user_defcongfig
android_hugop2p_r03_eng_defcongfig
android_hugop2p_r03_user_defcongfig
android_hugo_r01_eng_defcongfig
android_hugo_r01_user_defcongfig
android_hugo_r02_eng_defcongfig
android_hugo_r02_user_defcongfig
android_hugo_r03_eng_defcongfig
android_hugo_r03_user_defcongfig
android_hugo_r03_eng_EUR_defcongfig
android_hugo_r03_user_EUR_defcongfig
android_hugo_r03_eng_KOR_defcongfig
android_hugo_r03_user_KOR_defcongfig
android_hugo_r03_eng_USA_defcongfig
android_hugo_r03_user_USA_defcongfig
po8pimp said:
Ok so I am at the point where I need to make the Kernel. I am at this point:
make cyanogenmod_galaxys_defconfig (This is just as a example, replace it by whatever your defconfig is)
My question is which .defconfig do I use and how can I find the current one running on my device? I am assuming the best to fit all different platforms would be to chose the "android_hugo_r03_eng_defcongfig". Is this correct. I currently own the USA model if that helps. However I want to be able to help out all models without building 3 different kernels. Thank you in advance.
Here are the options available:
android_hugop2p_r01_eng_defcongfig
android_hugop2p_r01_user_defcongfig
android_hugop2p_r02_eng_defcongfig
android_hugop2p_r02_user_defcongfig
android_hugop2p_r03_eng_defcongfig
android_hugop2p_r03_user_defcongfig
android_hugo_r01_eng_defcongfig
android_hugo_r01_user_defcongfig
android_hugo_r02_eng_defcongfig
android_hugo_r02_user_defcongfig
android_hugo_r03_eng_defcongfig
android_hugo_r03_user_defcongfig
android_hugo_r03_eng_EUR_defcongfig
android_hugo_r03_user_EUR_defcongfig
android_hugo_r03_eng_KOR_defcongfig
android_hugo_r03_user_KOR_defcongfig
android_hugo_r03_eng_USA_defcongfig
android_hugo_r03_user_USA_defcongfig
Click to expand...
Click to collapse
In your case, it is more than just using different configs, sometimes there are more than one config because the different variants of the device uses drivers for other components. If you want to make 1 kernel for all the device, you need to modify it's source so that you can include all the variants drivers. Things like this requires a bit of comparing and programming skills.
I have the zImage created, now I need to make it bootable, can someone please fill me in on what is the next step. I have a bootable kernel to use as a shell if need be. Thank you in advance. This is for the 4.2 by the way.
EDIT: Figured it out I think. I am now running off a new kernel. How do I tell what the actual Kernel Version is? I used the toolchain provided here arm-eabi-4.4.3 to build it. Is there a way to know what the kernel version is from the toolchain?
---------- Post added at 11:04 AM ---------- Previous post was at 10:22 AM ----------
Looking at the readme in the folder for the toolchain, it says this is for ICS. If that is correct, then it is a step in the right direction. Here is the download link to the recovery/kernel
EDIT: removed link to kernel as it does not have wifi working.
po8pimp said:
I have the zImage created, now I need to make it bootable, can someone please fill me in on what is the next step. I have a bootable kernel to use as a shell if need be. Thank you in advance. This is for the 4.2 by the way.
EDIT: Figured it out I think. I am now running off a new kernel. How do I tell what the actual Kernel Version is? I used the toolchain provided here arm-eabi-4.4.3 to build it. Is there a way to know what the kernel version is from the toolchain?
---------- Post added at 11:04 AM ---------- Previous post was at 10:22 AM ----------
Looking at the readme in the folder for the toolchain, it says this is for ICS. If that is correct, then it is a step in the right direction.
Click to expand...
Click to collapse
Code:
cat /proc/version
Meticulus said:
Code:
cat /proc/version
Click to expand...
Click to collapse
thanks I will try that
EDIT: Linux version 2.6.35.7 (gcc version 4.4.3 (GCC))
Hi developers. I am very much newbie to whole android development and trying to learn how android works and compiling a rom for myself. Can somebody make a tutorial about compiling CyanogenMod 13 in Ubuntu 16.04 with open jdk 8 ? There are many written tutorials in internet and different guides have me different command instructions. And the android official porting guide is confusing to me. I have no prior knowledge in Java and not much in Linux commands. I am stucked at Initializing my build environment. I have downloaded the compressed source code of CM 13 from this http://forum.xda-developers.com/android/software/sources-android-sources-highly-t3231109 and extracted to a working directory naming "android"
Now after extraction, this folder contains a .repo folder containing 12GB of source code.
(whats the actual size ?)
Then followed this tutorial https://nathanpfry.com/how-to-setup-ubuntu-16-04-lts-xenial-xerus-to-compile-android-roms/
then at android dir, which is my working directory, typing these commands gave me errors attached below.
proceeded to bashrc steps without any problem, then when I typed repo init -u https://github.com/CyanogenMod/android.git -b cm-13.0 to initialize the repo, got an error message attached below. (5th attachment)
Well. As I already have those source codes in .repo, and extracted inside my working directory 'android' so I run repo sync commands which gives me an output attached below. (2nd attachment)
Then after typed these commands
cd .repo/manifests
git fetch origin
git reset --hard origin/cm-13.0
repo sync
And it started to download few things again and
gives me another result with an error (Attached below 3rd attachment).
Then typed cd vendor/cm/
it gives me a shock by no such file or directory exists. See vendor error.png attachment and I am stucked. (4th attachment)
no commands taking properly after that.. prebuilts commands stated as invalid, no device specific code downloaded (I am using a Micromax Bolt Q370 device), no breakfast command taking.. nothing. I am stucked. Whats wrong I am doing ?
I have downloaded 12 GB of data.
(Mobile Data is so expensive)
P.S. I am also uploading some snapshots of my Ubuntu home and working directory so that you can understand what's wrong with no such file or directory error. I dont want to download the whole source code again, and point me out if I am acting like a noob. Your guides will be appreciated and grateful. Have a good day.
I haven't compiled a Rom before? But none of the guides you linked are from source.android.com. Best to do a "make clean" and follow the offical guide provded by Google and adapt as needed. Also for a functioning Rom you'll probably need the proprietary binary blobs for your phone.
Best thing about the android/Google guide is that they are using ubuntu, and assume that you are to, so the guide is specifically aimed for ubuntu, making your life easier.
https://source.android.com/source/index.html
The android source guide is bit complicated for me as I am new to both git and repository things.
A video for CM 13 with a step to step guide will be appreciated at current time. I think it won't be a problem who already has repository installed and built CM 13 before.
Dont use openjdk 8, use 7 as of now 8 is still experimental.
You can try build without sync it first. Just use whatever comes from extracted tar.xz. add your device, kernel, vendor tree. Do source build/envsetup.sh , add_lunch_combo , lunch and then make otapackage.
Please check CyanogenMod build wiki.
Terminal is not taking build/env command. Well buddy, do you have cm 13 repo ?
Check out my attachments. The directories. Are they missing anything ?
The Wiki and Android Source page guides are confusing to me. Sorry I am a beginner but determined to learn
Sorry, I based my previous comment for non-repo archive. For .repo folder you should try to extract the source first and then proceed with build/envsetup.sh, etc, etc
.repo is aleady extracted to my working directory 'android', contains 13GB of source code.
Now if i give envsetup command, my linux terminal doesn't understand it and responses an invalid command error.
vikoadi said:
Dont use openjdk 8, use 7 as of now 8 is still experimental.
You can try build without sync it first. Just use whatever comes from extracted tar.xz. add your device, kernel, vendor tree. Do source build/envsetup.sh , add_lunch_combo , lunch and then make otapackage.
Please check CyanogenMod build wiki.
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Somebody said me that openjdk 7 is incompatible for CM 13
I am done with repo sync but there are many questions in my mind and things to learn. I made a separate post of these question here http://forum.xda-developers.com/android/help/questions-compiling-cyanogenmod-13-t3496186/page1
For studying I have to compile dexpot-wrapper whose source file located in build/tools/dexpreopt/despot-wrapper/ folder of android source 2.1.
I compiled the android source with lunch both generic-eng and userdebug but seemly that dexpot-wrapper was not compiled.I searched the file name but couldn’t find it.
How could I compile it?Did I miss something necessary?
Thanks for yor reply.
I compiled it under source froyo,using -fpie -pie,but on android 6 dexpot-wrapper failed with text relocation.