[GUIDE] Develop NOW! 3rd Edition - How To Build ROMs, Kernels, and MODs [Hercules]

ryancnap · Oct 3, 2013

Florendroid said:
What I do when building slim :

- repo init
-repo sync

If you want to make changes to a particular repository ( for instance framework_base), what I did was fork that repo from slim to my github. You make the changes to your working directory ( cherry-picking or whatever), commit and push the changes to your forked repo. Don't forget to edit the default_manifest.xml and point it to your forked repo ( it will then sync the repo and fetch your forked frameworks_base repo instead of the slim one).

Edit : to update slim changes, add the original repo as a remote and git pull NameYouGaveToRemote branchYourWorkingOn to update your local repo and then git push to upload it to your github.

thank you so much for this, I never thought to go about it this way. so git pull would only grab whatever was updated that wasn't in my local repo? one thing I'm still puzzling over; if I were to commit my changes and push to my forked repo, wouldn't git pulling from the original and then pushing to upload to my github as you said overwrite whatever commits I had previously pushed to my forked repo?

Florendroid · Oct 3, 2013

ryancnap said:
thank you so much for this, I never thought to go about it this way. so git pull would only grab whatever was updated that wasn't in my local repo? one thing I'm still puzzling over; if I were to commit my changes and push to my forked repo, wouldn't git pulling from the original and then pushing to upload to my github as you said overwrite whatever commits I had previously pushed to my forked repo?

No your commits will still be there. It only updates your repo with whatever changes they made to the original one, keeping your commits.

Sent from my SAMSUNG-SGH-T989 using xda app-developers app

dginsd · Oct 6, 2013

Hope this isn't a too stupid a question but I can't seem to figure how to copy and paste the terminal commands to install the dependencies in Ubuntu. Java 6 or 7 installation and some of the commands listed are quite long to input manually. Also is it entirely necessary to have Oracle java, I already have openJDK 6 and 7 installed on my machine?

Cl3Kener · Oct 6, 2013

dginsd said:
Hope this isn't a too stupid a question but I can't seem to figure how to copy and paste the terminal commands to install the dependencies in Ubuntu. Java 6 or 7 installation and some of the commands listed are quite long to input manually. Also is it entirely necessary to have Oracle java, I already have openJDK 6 and 7 installed on my machine?

1) You have to right click inside the terminal window and click paste. You can't use the keyboard shortcuts unfortunately. Terminal is funny like that and it only likes it when you copy and paste using the mouse.

2) OpenJDK regardless of the version will not work and your build will fail within the first 30 seconds guarenteed (even if you override warnings and force the build). Your safest bet is to install Sun Java 6 since that is the only one supported by all platforms although I have both 6 and 7 and use the command "sudo update-alternatives --config javac" to manually flip flop back and forth between versions. (I also purge openjdk to make it less confusing when switching versions)

dginsd · Oct 6, 2013

I tried manually selecting and pasting but it seems to insert <returns> in the middle of commands making the terminal see a $'piece of the command' <return> error, $'next piece of command' <return> error etc.

ghajj · Oct 13, 2013

Error after running make

I am getting this error I have done the JAVA installation procedure twice. There must be something I am missing.

MYROM/out/target/common/obj/JAVA_LIBRARIES/android_stubs_current_intermediates/classes.jar] Error 41

I searched. All I could find is eitehr about openJDK or some path issues. java and javac executes fine from the cmdline.

Thanks in advance

mondaza · Jan 15, 2014

I want to put Linaro to AOSP. If I follow the tutorial, I put my discharge in place in / prebuilts and modify envsetup, I can build the rom. But I'm sure it does with the old gcc, because if I remove it gives me errors. Can anyone help?

Cl3Kener · Jan 15, 2014

mondaza said:
I want to put Linaro to AOSP. If I follow the tutorial, I put my discharge in place in / prebuilts and modify envsetup, I can build the rom. But I'm sure it does with the old gcc, because if I remove it gives me errors. Can anyone help?

@mondaza

That "old" gcc is still used for compiling many things. For the record, LINARO only builds a small portion of the ROM. We use linaro to optimize bionic and dalvik files and such. There is actually a more advanced way to use linaro to build the entire ROM but it causes problems with most devices. Using linaro in this fashion there are virtually no problems with most devices. If you really want to use linaro for everything possible try grepping "androideabi" and replacing any reference with linaro instead. Be aware that even if it compiles correctly some things might not work right.

Cl3Kener · Jan 23, 2014

Hey Everyone,

Good news!

I've almost completed Develop Now 3rd Edition. To make it more generic I cut out the building section and have been adding either more details or more tricks I've picked over the past few months. I will be posting soon but first I wanted to share with you a post I made showing an example of how I use bash scripts to compile kernels. Make sure to thank Ayysir while you're over visiting his thread. Here is the link to the bash script tutorial http://xdaforums.com/showpost.php?p=49684209&postcount=4

Cheers!
Cl3Kener

Cl3Kener · Jan 25, 2014

Hey Everyone,

So I finished updating the manual and you can find it posted on the OP. Let me know if you see any typos introduced by me reordering sections and rewriting things. Now you have my latest knowledge with changes in how I approach git now that I know more commands and how I approach developement in general. If there is something that you've seen me do that you don't quite understand from reading this shoot me a PM and we'll either add it to the guide or I'll just send you an explanation.

Enjoy the new update!

Cheers!
Cl3Kener

LuigiBull23 · Jan 26, 2014

Fantastic guides!! Thank you VERY much!

kennkanniff · Jan 26, 2014

Thanks for the update!

romuloxiii · Jan 27, 2014

Wow, this is a great guide!! Thank you for this. Your guide has been very helpful for me with regards to some of the git commands such as cherry picking, how to use a differen toolchain during the build, as well as others. This is definitely the most comprehensive guide I have seen yet.

Thanks!!

12packabs · Feb 9, 2014

Thanks for this guide! I've been building for a while but am now wanting to pull some features from one ROM into another.

What is the best way to find the commits I need in the source ROM? I want to add lockscreen notifications to Slim. Probably from PA. Any guidance would be appreciated.

soccerfan6789 · Feb 9, 2014

12packabs said:
Thanks for this guide! I've been building for a while but am now wanting to pull some features from one ROM into another.

What is the best way to find the commits I need in the source ROM? I want to add lockscreen notifications to Slim. Probably from PA. Any guidance would be appreciated.

Alright so your base is Slim. Cherry-picking from PA would be hard because you'll encounter tons of problems and errors. If you really want it, you're going to have to add in the lines of code that's modified manually. Some files are AOSP and are untouched so that'll be easy but majority of them will be different. Also, there might be some code previously done and you'll have to find those commits and incorporate them as well. It's time consuming and difficult but if you do it right, it's rewarding.

Sent from my Nexus 5 using XDA Premium 4 mobile app

12packabs · Feb 9, 2014

Thanks for your reply. Good point about PA. I know Carbon has them is also based on AOSP so that might be easier. Just struggling with how to find the features in the source and then identify the commits I need. I'll keep digging.

soccerfan6789 said:
Alright so your base is Slim. Cherry-picking from PA would be hard because you'll encounter tons of problems and errors. If you really want it, you're going to have to add in the lines of code that's modified manually. Some files are AOSP and are untouched so that'll be easy but majority of them will be different. Also, there might be some code previously done and you'll have to find those commits and incorporate them as well. It's time consuming and difficult but if you do it right, it's rewarding.

Sent from my Nexus 5 using XDA Premium 4 mobile app

soccerfan6789 · Feb 9, 2014

12packabs said:
Thanks for your reply. Good point about PA. I know Carbon has them is also based on AOSP so that might be easier. Just struggling with how to find the features in the source and then identify the commits I need. I'll keep digging.

Majority of those commits are in frameworks/base and packages/apps/Settings

roshan2989 · Feb 10, 2014

hi guys i successfully compiled my homemade cm11,so the next step is cherry pick..as i download the pdf file and read it which clearly understand..so im a newbie here,just wanna ask where to find the cherry pick for TRDS (the real dark slim) kit kat,...help would be appreciated..

soccerfan6789 · Feb 10, 2014

roshan2989 said:
hi guys i successfully compiled my homemade cm11,so the next step is cherry pick..as i download the pdf file and read it which clearly understand..so im a newbie here,just wanna ask where to find the cherry pick for TRDS (the real dark slim) kit kat,...help would be appreciated..

Read what I just said ^^. But again, it'll be hard and I don't mean to be mean but it'll be difficult if you lack experience and I know you'll get a ton of errors. But if you want to do it, first find the commits that you need. They should be in frameworks/base and packages/apps/Settings.

git remote add ...
git fetch ...
git cherrypick ...

brajesh.sharma87 · Feb 17, 2014

@soccerfan6789 I have built aosp for my nexus 4. I tried doing some basic cherry picking from cm and pa (those which I thought wont have conflict) just to check whether I am going in right direction and it went well.

Now I want to move forward. Lets say I want to add Notification LED control. So for that I need to pick these commits.

First into package/apps/settings: https://github.com/AOSPA/android_pa...mmit/6b6632a3a6fe4f944819be0af67a5e65dbdead5a

Second into frameworks/base: https://github.com/AOSPA/android_frameworks_base/commit/47114889dbc722d3cd31378f47ddd1b025bf0e86

Now, as I do the first cherry pick, I get error, upon running 'git status' I see this:

Code:

brajesh@Brajesh-Sharma:~/android/aosp-kitkat/packages/apps/Settings$ git cherry-pick 6b6632a3a6fe4f944819be0af67a5e65dbdead5a
error: could not apply 6b6632a... Notification LED Control (2/2).
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'
hint: and commit the result with 'git commit'
brajesh@Brajesh-Sharma:~/android/aosp-kitkat/packages/apps/Settings$ git status
# Not currently on any branch.
# You are currently cherry-picking.
#   (fix conflicts and run "git commit")
#
# Changes to be committed:
#
#[COLOR="DarkGreen"]	new file:   res/layout/dialog_light_settings.xml
#	new file:   res/layout/preference_application_light.xml
#	new file:   res/layout/pulse_time_item.xml
#	new file:   res/values/pa_arrays.xml
#	modified:   res/xml/display_settings.xml
#	new file:   res/xml/notification_light_settings.xml
#	modified:   src/com/android/settings/DisplaySettings.java
#	new file:   src/com/android/settings/notificationlight/AlphaPatternDrawable.java
#	new file:   src/com/android/settings/notificationlight/ApplicationLightPreference.java
#	new file:   src/com/android/settings/notificationlight/ColorPanelView.java
#	new file:   src/com/android/settings/notificationlight/ColorPickerView.java
#	new file:   src/com/android/settings/notificationlight/LightSettingsDialog.java
#	new file:   src/com/android/settings/notificationlight/NotificationLightSettings.java[/COLOR]
#
# Unmerged paths:
#   (use "git add/rm <file>..." as appropriate to mark resolution)
#
#	[COLOR="Red"]deleted by us:      res/values/pa_strings.xml[/COLOR]
#
brajesh@Brajesh-Sharma:~/android/aosp-kitkat/packages/apps/Settings$

How should I proceed from here onwards in solving the conflict?

@Cl3Kener : The way you've written the guide is excellent, it is useful for the newcomers. As a suggestion, there is no such detailed guide for cherry-picking. If you get time I would request you to create a guide on this with examples (I know its very tough and time taking)

[GUIDE] Develop NOW! 3rd Edition - How To Build ROMs, Kernels, and MODs [Hercules]

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