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Rooted JFv1.3, Engineering Bootloader.... now what?

I have been following the Threads since I got my G1 for about 3 weeks now. Two days after receiving it I got the OTA update from T-Mobile before I knew it I was on RC30. After DREAMIMG.nbh and very careful reading I was able to downgrade to RC29, Root - Telnetd, and install RC30 Mod JFv1.2 then JFv1.3. Finally I installed Bootloader and got the skateboarding androids.
After a couple days of reading, I took the plunge. Let me be the first to say that as a Windows XP user, alot of this information is very confusing as I am used to a Dos type system, and all of these commands made it seem a bit more confusing than it really is.
Now that I have root and bootloader I would like to start to change the boot screen and try my hand at some Linux based stuff?
Being that I use Windows XP, it is my understanding that I can run Linux using Slax? I am very computer literate, but haven't tried my hand at programming since the days of Dos and Paschal. Are their any online tutorials that somone would recommend as a starter or is the Android Software so different that it may be better to start from scratch?
Willing to learn any pointers would be appreciated.

I may be misunderstanding you but if your looking to make any modifications to the operating system itself (which is definitely needed), I would suggest having a look at the Android source code at http://android.git.kernel.org. The back-end of the platform (kernel, etc) is all written in C. The userland stuff is written in Google's implementation of Java called Dalvik. Now that you have the dev bootloader, all you really have to do is clone the official android repository, make your changes, build and flash to the device using fastboot.

Thanx Datruesurfer
After all the reading it seemed alot of work was being done in Linux but I don't know anything about that so, I could be completely off base.
At your suggestion I looked at android.git.kernal and it seems they do a good job at explaining some things, but it still makes many references to Linux and Unix.
Would programming of Git be done in linux. I see that Git is gotten using .tar files which is Linux compressed files? So is it best to try to do programming using slax or ubuntu?
Also, are things like the boot screen modified using Linux based .png or can that be done in Windows?
Let me say sorry in advanced, as I am doing this for the first time, please say stop if I am being too n00bish.

Also...I noticed ....
that the commands given in the Git User's Manual look very familiar like the commands that were given while I was reverting my RC30 back to RC29 using the Pterminal/Telnet. Can this programming with Git be done off of the G1 Phone itself?

You're in over your head dude. If you haven't programmed in these object oriented based programming methods and you know nothing of linux, then recompiling the android source like the above poster suggested is too much.
I don't mean to dissapoint or negatively comment, but really save yourself the trouble.
If you really want to though, figure out the basics of C and java programming and start reading the source.

Brutal-Force said:
After all the reading it seemed alot of work was being done in Linux but I don't know anything about that so, I could be completely off base.
At your suggestion I looked at android.git.kernal and it seems they do a good job at explaining some things, but it still makes many references to Linux and Unix.
Would programming of Git be done in linux. I see that Git is gotten using .tar files which is Linux compressed files? So is it best to try to do programming using slax or ubuntu?
Also, are things like the boot screen modified using Linux based .png or can that be done in Windows?
Let me say sorry in advanced, as I am doing this for the first time, please say stop if I am being too n00bish.
Click to expand...
Click to collapse
A Few things...
1. Android and Git are two completely different products. Git is the revision control system used by Android. Whenever one of the developers at Google makes a change to the source code they will upload it to the repository. Then people can go revision by revision to see where modifications have been made and suggest their own if they wish.
2. The part where a Linux box would be handy is actually downloading all of the files in the repository and compiling your own build. As dirr said, you probably should hold off on this until you have a better understanding of the platform itself.
3 As far as the boot image goes, the bootloader will only accept files that have been formatted specifically for it. Once you have the image formatted, you can flash it in the SPL via fastboot (the screen with the skating androids) I believe this can all be done via windows now.
4. I think I better understand where your coming from as far as modification. You should look at http://code.google.com/android to learn about how to code in Dalvik, as that will help you out much more then learning C. Once you have a good understanding of that, you can try to build from source
Hope that helps...

Thanx for the advice.
After reading about the above suggestions, it does seem that to do something simple would only be simple for someone who has all the background programming information of different platforms. This is probably why most tutorials/procedures are written so vaguely here. I appreciate the input and I will hold off and just read up on things other "more experienced" people write about here. I have a basic understanding of what is happening, but the "language" is so complex. Maybe in baby steps I will learn, since it appears that on this forum "Android" is fairly new. And while I am watching what is happening here, I will get java for dummies or bone up on Dalvik and start reading and practicing. Thanx for the help guys, and thans JF, Koush and all the other senior members for the RC30 Mod. At least I have the skateboarding Androis

Recompile and overwrite applications in system/app

As an experiment I am trying to rebuild some standard android applications and replace them in system/app on the G1. I have been through all the steps to get the source code and build for the dream platform and have built the various .apk files of interest (e.g. AlarmClock.apk, Browser.apk etc)
To put the files on the device I delete the old .apk and .odex files and copy my newly built .apk file on to the device. However when I try to run the application it crashes with the following message.
The application Alarm Clock (process com.android.alarmclock) has stopped unexpectedly. Please try again.
I know that replacing the applications like this is possible, because the AutoRotating Browser build works fine when copies over in this manner.
I'm using JF1.31 (RC8)
My initial reaction was that I was not signing the applications properly but having read some posts I think the default built .apk should have the right key already in it.
Another theory I have is that perhaps the applications from the head of the source tree are not compatible with the RC8 (or RC30) Android OS releases. Can anyone tell me how to get the source tree which corresponds to this baseline, I've done some reading around but cannot figure it out. I presume I need to do a repo init -u git://android.git.kernel.org/platofrm/manifest.git -b BASELINE but I can't figure out what BASELINE should be.
Many thanks in advance for any help you can give me!!!

There are some branches in android sources:
master
cupcake
release-1.0
Apps from the first two will not run on default G1, you need to reinstall a whole system. I think by default, following google docs you'll get master. So you need to download a release-1.0 sources.
I may be wrong, but that is what I'm see from my experience.

Thanks for that, I'll get the 1.0 branch downloaded and have a go with that.
Cheers for your help!

I was also trying to recompile some of the built-in apps, specifically the browser, but I can't even get it to build. I get a bunch of import errors, stating that it can't find some of the android libraries, such as android.net.http.AndroidHttpClient, android.os.AsyncTask, etc. I've got the android.jar from the SDK in my build path, and it finds some of them, such as android.webkit.URLUtil.
Can anyone shed some light on what I need to do to get it to see the missing libraries? Thanks.

UndeadCretin said:
Thanks for that, I'll get the 1.0 branch downloaded and have a go with that.
Cheers for your help!
Click to expand...
Click to collapse
There are around a dozen build breaks in release-1.0... all of them are due to missing header #includes in various .c and .h files. So, when it doesn't work, don't give up. Fix the breaks and everything will build properly.

Are you resigning the .apk files? Cuz you have to do that for them to work correctly.

Koush said:
There are around a dozen build breaks in release-1.0... all of them are due to missing header #includes in various .c and .h files. So, when it doesn't work, don't give up. Fix the breaks and everything will build properly.
Click to expand...
Click to collapse
Yep I fixed these problems but I have now hit upon the following problem:
(unknown): error 17: Field android.hardware.SensorManager.LIGHT_NO_MOON has changed value from 0.0010f to 0.001f
******************************
You have tried to change the API from what has been previously released in
an SDK. Please fix the errors listed above.
******************************
I've been in and modified SensorManager back to 0.0010f and that let me build get further but I hit the same error again later in the build.
Given that release-1.0 should be a stable branch is it normal to get all these build issues?

Managed to fix the java issue by modifying public_api.xml. Then hit several more C++ problems which I fixed and finally I can build the lot!
Just tried building the AlarmClock application and running on the G1 and it works fine. Thanks everyone for your help!

>Managed to fix the java issue by modifying public_api.xml. Then hit several more C++ problems which I fixed and finally I can build the lot!
Can you write, what did you fix?

^ Agreed, let us know which files need modifying and what needs doing, i've been trying to get my release-1.0 build root working too!
Alternatively, UndeadCretin, could you build the firmware (release-1.0) with a modified framework-res i can send you?

Ok, I managed to compile it without any editing of xml.
Just added stdlib, string, vector headers to dozen of cpp/h.

worry said:
>Managed to fix the java issue by modifying public_api.xml. Then hit several more C++ problems which I fixed and finally I can build the lot!
Can you write, what did you fix?
Click to expand...
Click to collapse
To fix the java issue, I modified frameworks/base/core/java/android/hardware/SensorManager to change the LIGHT_NO_MOON value to 0.0010f (from 0.001f) and in out/target/common/obj/PACKAGING I modified the <field name="LIGHT_NO_MOON" to have value-"0.0010f">
After this there were several other c++ files which were missing relevant includes. I'm afraid I didn't keep a note of these so cannot provide much detail but mostly they were missing one of the following
#include "stdlib.h"
#include "string.h"
#include "stdio.h"
I think one file needed the following include
#include <string>
and there were a couple of other files that needed other includes. The best way to find these is to google for the function name that isn't building and you should be able to find the appropriate include (that's how I did it).
Hope that helps a bit!

were you able to repo sync after adding the local_manifest.xml?

ximonx said:
were you able to repo sync after adding the local_manifest.xml?
Click to expand...
Click to collapse
I did try that previously but it didn't work. I don't think the relevant files for the dream build are available in the release-1.0 branch. This wasn't a problem for me since I'm only interested in building the applications which work fine with the generic build.

I would like to do the same for the mms application. Could you give me the steps or a link how to do it? I mean do I need the whole sources from android platform to do it? How can I just compile one application?

Phlogiston said:
I would like to do the same for the mms application. Could you give me the steps or a link how to do it? I mean do I need the whole sources from android platform to do it? How can I just compile one application?
Click to expand...
Click to collapse
I downloaded the whole Android source (the release-1.0 branch) and compiled the lot. It may be possible to just build the individual application but I do not know how. It is not vital to build for the dream platform if you only care about the applications since they will work fine with the generic build.
So the basic steps to start are:
Get yourself a Linux or Mac OS platform (I use Ubuntu running in VMWare on my XP box).
Follow the instructions here: http://source.android.com/download but when you come to repo init add the flag -b release-1.0
Fix various build problems

When recompiling individual apps to replace system apps is there a way of just building a single application or does the entire thing need making?

ximonx said:
When recompiling individual apps to replace system apps is there a way of just building a single application or does the entire thing need making?
Click to expand...
Click to collapse
My experience is that you have to do the whole thing if you are building from source. There is one way I know of to get around this, which is to use baksmali and smali.

Just to be clear, making the entire thing = build from source root?

ximonx said:
Just to be clear, making the entire thing = build from source root?
Click to expand...
Click to collapse
If you are asking me--yes, that's what I mean. Make sure to build for dream-open as the target (it's generic by default).

[RDL] Sapphire Config files for rolling your own rom

Hi Guys
I have tried to put together my own config files for the sapphire, these go in the vendor/htc/sapphire directory after you have extracted the source
by no means are they perfect but i hope they will start some fresh development.
http://www.cminion.com/wordpress/2009/08/11/rolling-your-own-android-rom-for-htc-magic-sapphire/
If something doesnt work, or anyone manages to perfect them let me know so I can repost.
please let me know how you get on

Nice work!
Did you try this for a 32A or 32B board?

Looks interesting... anyone tried this for 32A since 32B don't have this issue in the first place?

I have a 32b and someone is testing it with 32a but we are having trouble compiling today its been fine in the past

cminion said:
I have a 32b and someone is testing it with 32a but we are having trouble compiling today its been fine in the past
Click to expand...
Click to collapse
Well keep us updated if you get anything working for 32A since all of 32A users are stuck with the htc kerel... if you need someone else to test you can pm =D

I've been trying my best at building a kernel for 32A, but no matter what I do it doesn't boot at all.
Does anyone know how you can debug a kernel the kernel's boot process at all? I just get hangs or reboots from any of the kernels I build and I've no idea what is missing or where it's going wrong. If it gave some sort of output then I might be able to figure out what I'm doing wrong! (adb logcat doesn't kick in until AFTER it's booted unfortunately)
How have the 32b users gone with this? Anyone managed to boot one?

cminion said:
Hi Guys
I have tried to put together my own config files for the sapphire, these go in the vendor/htc/sapphire directory after you have extracted the source
by no means are they perfect but i hope they will start some fresh development.
http://www.cminion.com/wordpress/2009/08/11/rolling-your-own-android-rom-for-htc-magic-sapphire/
If something doesnt work, or anyone manages to perfect them let me know so I can repost.
please let me know how you get on
Click to expand...
Click to collapse
Hey, just saw your post and I'm taking a look. So far it's OK, but I think you're missing (at least) the keypad files. Also, a little legal note (in case you didn't know), you aren't legally able to pack the qualcomm libraries on the proprietary/ folder. Not that I really care about it, but I thought you should know since maybe you're going against xda rules by posting copyrighted files -not sure anyway-. Maybe it's better if you leave the propietary folder empty (or just with the minimal stuff like the keymaps, audioparametters and .ini files) and let the extract-files script do the job for whoever uses it to compile. After all, if someone uses this, he already has the libraries on the phone
Anyway, I'm going to compile, if I see something else missing, I'll modify accordingly and send you the changes made, ok?
Regards!
PS: Nice work
EDIT: Okay, I did some little changes on the board file definitions,renamed the folder to sapphire-open (to match dream-open added the keymaps, and a kernel & wlan.ko I had laying around (it's still compiling so maybe the kernel doesn't start, but it still needs an hour or so to end the build, but so far, it's not failing). I have packed it, you can get it here: http://rapidshare.com/files/266633357/sapphire_config.tar
If I see something else I'll repost

dev question???

are there any modifications needed to Lox's Proprietary files to compile android source for the cdma hero?

Anybody know this?

Wish I could give you an answer -- never tried it myself though.

I keep getting errors on line 22 in a make file. I don't remember the exact error and am posting on my hero right now. If I figure this out ill post back.

[Q] How to compile ROM from Paulburton's ICS source??

Can anyone provide me some reference or guide on how to compile the ROM for tf101 from Paulburton's ICS source.

rajkumard said:
Can anyone provide me some reference or guide on how to compile the ROM for tf101 from Paulburton's ICS source.
Click to expand...
Click to collapse
Check his website for repo information. Beyond that, its no different than compiling any rom from source.
You should know that you probably will not get anything different than what he has released thus far, that is, unless you have coded your own changes.

Thanks, I will check the link. I believe he has few bug fixes which I need, that's the reason why I wanted to compile it.

rajkumard said:
Thanks, I will check the link. I believe he has few bug fixes which I need, that's the reason why I wanted to compile it.
Click to expand...
Click to collapse
Understood. I do know that Paul is neck deep with finals, and other school stuff, so there is no harm in running a compile yourself. I just wanted to make sure you knew what to expect. His repo sync is a tad different from other instructions, i.e. CyanogenMod...but once you get it all pulled down, its essentially the same steps for the compile portion.

Actually I am new to this. All these days I have been only using the ROM's and never tried to compile one. This is my first time and I appreciate your help. The link really helper, I have started syncing the repo, looks like it's going to be a while. I will post if I run into any issues.

rajkumard said:
Actually I am new to this. All these days I have been only using the ROM's and never tried to compile one. This is my first time and I appreciate your help. The link really helper, I have started syncing the repo, looks like it's going to be a while. I will post if I run into any issues.
Click to expand...
Click to collapse
I will tell you this...use ccache, its a huge time saver when you need to rebuild after making changes. Also...dedicated build system really is recommended, and without question, the more juice its got, the better.
Here are a couple of links...including a kernel specific one from CyanogenMod's wiki. I use both when I am bored and just want to compile something
Yet Another Tutorial on Building Android from Sources
Building Kernel from Source
Compiling ICS from Source
Hope these help!

http://source.android.com/source/initializing.html
http://wiki.cyanogenmod.com/wiki/Building_from_source
You will probably need these... be sure to cross reference the CM website against the google one. There are a few differences.

Thank you for the links. I got a spare machine and am thinking it is about time I did something productive with it.

Thanks for all the links, I was using one of the links that you have provided. It had the with step by step instruction. I followed it, most of the things went fine and some issues I was able to resolve. Now when try to build the rom using the make command I get the following error. I am doing the sync again to see if it resolves. I will try it out tomorrow. Meanwhile if any of you have any suggestions please let me know. btw I have tried the solution provided in one of the xda thread (repo sync -f) already and it did not resolve.
ERROR:
cts/apps/CtsVerifier/lib/colorchecker/Android.mk:22: external/stlport/libstlport.mk: No such file or directory
make: *** No rule to make target `external/stlport/libstlport.mk'. Stop.

rajkumard said:
Thanks for all the links, I was using one of the links that you have provided. It had the with step by step instruction. I followed it, most of the things went fine and some issues I was able to resolve. Now when try to build the rom using the make command I get the following error. I am doing the sync again to see if it resolves. I will try it out tomorrow. Meanwhile if any of you have any suggestions please let me know. btw I have tried the solution provided in one of the xda thread (repo sync -f) already and it did not resolve.
ERROR:
cts/apps/CtsVerifier/lib/colorchecker/Android.mk:22: external/stlport/libstlport.mk: No such file or directory
make: *** No rule to make target `external/stlport/libstlport.mk'. Stop.
Click to expand...
Click to collapse
The obvious question would be does the folder/file exist?
Code:
$ ls external/stlport/libstlport.mk
external/stlport/libstlport.mk
If it is...type 'env' at your command prompt and see what environment variables are set to see if the external folder should be seen.
Re-run 'source ./build/envsetup.sh', then 'lunch' and choose the tf101-userdebug (or what ever Paul uses now) option listed after running lunch.
See if that helps.

I'm repo sync'ing now- gosh, it takes longer to sync than it does to build. I still have to clone the kernel. I think it's been downloading for 2 hours!
I've actually never flashed this ROM, but that won't stop me from building it

Thanks gVibeR. The external folder exist but the 'stlport' folder does not exist. And I also did not see any option with 'tf101' in it when I run 'lunch'. I tried re-syncing the repo but i ran into out of space error. I did not know where to delete all the earlier repo downloads. This was a brand new Ubuntu installed with 25gig disk space. I will keep looking and let know if I had any luck.

rajkumard said:
Thanks gVibeR. The external folder exist but the 'stlport' folder does not exist. And I also did not see any option with 'tf101' in it when I run 'lunch'. I tried re-syncing the repo but i ran into out of space error. I did not know where to delete all the earlier repo downloads. This was a brand new Ubuntu installed with 25gig disk space. I will keep looking and let know if I had any luck.
Click to expand...
Click to collapse
I think you'll need more space than that - once you start building, the directory will swell to over 20gb. For comparison, andromadus(ICS) for the vision is 21g and CM7 (GB) is 18gb.
I'm still downloading, but spark source is at least 11gb and that doesn't include the kernel or the out directory, which will fill up after building.
I think you will need at least 25gb for the build plus whatever for ubuntu. If you are hard up for space, you can install one of the server versions of ubuntu, which doesn't include the GUI (~1.5gb).
The repo files are stored in .repo, which will be hidden. Use ls -a to see it, although I think it manages and discards old commits.

Thanks gee one, I have more than enough space, just thought 25gig should be fine. I will install Ubuntu again with more space and give it a try. Let me know how it goes for you, please post if you got any issues and resolved it.