Database Users

Cross-compiling, what am i doing wrong

Hello!
as the title indicates I am having trouble cross-compiling. hello world compiles perfectly but bigger programs just wont give in..
I downloaded the android source from git and compiled just the way the website (http://source.android.com/download) says you should (is there anyway to verify that its compiled correctly?)
Then I use the agcc python script(http://plausible.org/andy/agcc) for the linking but when i compile i always get trouble about it not being able to find certain defined fields or other types. So basicly i followed the second part of what this wiki says (eventough using a toolchain from codesourcery for example and cc staticly. It also fails...)
What im really asking is how and what do you guys use to cross-compile to android?

Richard_Xeli said:
Hello!
as the title indicates I am having trouble cross-compiling. hello world compiles perfectly but bigger programs just wont give in..
I downloaded the android source from git and compiled just the way the website (http://source.android.com/download) says you should (is there anyway to verify that its compiled correctly?)
Then I use the agcc python script(http://plausible.org/andy/agcc) for the linking but when i compile i always get trouble about it not being able to find certain defined fields or other types. So basicly i followed the second part of what this wiki says (eventough using a toolchain from codesourcery for example and cc staticly. It also fails...)
What im really asking is how and what do you guys use to cross-compile to android?
Click to expand...
Click to collapse
Hello,
i am having problems with the linker too! i am using the NDK (because it actually does C / C++ code) and the code compiles with very few warnings on some instructions but works well otherwise, it just WOULD NOT LINK the stuff together!! one interesting setting i noticed in some public makefiles for the NDK i noticed is that they actually set the linker to /system/bin/linker, which is obviously a file on the target device. but i don't know how it would access it? any ideas?
BTW: post your error(s) please

Try this
The system won't let me post a link (as a new user), however there is a really good tutorial on native android development and debugging using the AOSP build system. Search on Aton International Incorporated and click on blogs in the menubar. I am in no way associated with the company, just happy to finally be able to cross-compile, link and debug for android.
Maybe someone who has more posts could post a link here.

http://www.aton.com/android-native-development-using-the-android-open-source-project/

Toolchain/Complilation

A quick question:
If I have source code is it just a case of getting the android toolchain and then compiling against that and then installing (thinking ./configure, make, install)?
Thx
///C

Read this: http://android-tricks.blogspot.com/2009/02/hello-world-c-program-on-using-android.html
Probably best for you to use agcc, which is linked in the post.

thanks for the rsponse

Autobuild kernel, what are these?

what are these kernels http://oe.netripper.com/files/htcleo_autobuild/ ? is there a changelog for these zimage? what is git? what is autocompiled kernel?
sorry for my bad english

villellino69 said:
what are these kernels http://oe.netripper.com/files/htcleo_autobuild/ ? is there a changelog for these zimage? what is git? what is autocompiled kernel?
sorry for my bad english
Click to expand...
Click to collapse
All the answers to your questions can be found here http://forum.xda-developers.com/showthread.php?t=719646
Pulling them out for you, GIT changelog link (from above post) is http://git.linuxtogo.org/?p=groups/mobile-linux/kernel.git;a=shortlog;h=refs/heads/htc-msm-2.6.32
A GIT is a tool to allow multiple developers to contribute changes / updates / work cooperatively on the same project / development http://git-scm.com/
These kernels are... "This thread discusses the development on Linux kernel and user space on the HTC HD2"
Autocompiled kernel.. that is the linux kernel compiled from the source code in the GIT, AUTOMATICALLY, every half an hour.
Someone pls correct me if any of the above is not spot on.

aenedor said:
All the answers to your questions can be found here http://forum.xda-developers.com/showthread.php?t=719646
Pulling them out for you, GIT changelog link (from above post) is http://git.linuxtogo.org/?p=groups/mobile-linux/kernel.git;a=shortlog;h=refs/heads/htc-msm-2.6.32
A GIT is a tool to allow multiple developers to contribute changes / updates / work cooperatively on the same project / development http://git-scm.com/
These kernels are... "This thread discusses the development on Linux kernel and user space on the HTC HD2"
Autocompiled kernel.. that is the linux kernel compiled from the source code in the GIT, AUTOMATICALLY, every half an hour.
Someone pls correct me if any of the above is not spot on.
Click to expand...
Click to collapse
perfect, thank you!

[REQ] Help me get european ROMS working on i9000N

Hi all,
Can someone with experience teach a Guatemalan electronics engineer (that's me ) who has worked for 15 years programming business and web apps mostly in C# how to build a kernel so that I can run my P1000N with european roms?
I have never worked with open source projects, but I'm willing to learn.
The first problem to solve is that when I flash a european rom I loose touch screen capabilities, so that points to a different driver being used.
Or maybe there is someone who can tackle this project?
Thanks!

first of all, which rom do you want to use?
is the source code for your device released?
do you have a linux workstation (virtual machine is enough)?
are you familiar with the linux terminal and its commands?

Landroid said:
first of all, which rom do you want to use?
Click to expand...
Click to collapse
For example Roto's
Landroid said:
is the source code for your device released?
Click to expand...
Click to collapse
Yes, searched on http://opensource.samsung.com/ for P1000N and already downloaded.
It's the difference with european kernel.
On the readme it lists:
< Platform >
1. Get Android open source code
: version info - Android froyo 2.2 (android-cts-2.2_r2)
( Download site : http://source.android.com )
2. Get GT-P1000 open source code
: GT-P1000_OpenSource.zip
( Download site : http://opensource.samsung.com )
Unzip it, then you will see the file GT-P1000_Platform.tar.bz2 which includes the platform source code.
3. Overwrite GT-P1000 Platform OpenSource to the Android open source.
4. Unzip GT-P1000N_Platform.tar that comes from the Latin American version.
( You can find GT-P1000N_Platform.tar in the same directory with this README.txt . )
5. Overwrite GT-P1000N Platform OpenSource to the Android + GT-P1000(European) Platform open source code.
6. Run build_latin_n.sh user/eng
$ ./build_latin_n.sh user
$ ./build_latin_n.sh eng
< Kernel >
1. Get GT-P1000 open source code
: GT-P1000_OpenSource.zip
( Download site : http://opensource.samsung.com )
Unzip it, then you will see the file GT-P1000_Kernel.tar.bz2 which includes the kernel source code.
2. Unzip GT-P1000N_Kernel.tar that comes from the Latin American version.
( You can find GT-P1000N_Kernel.tar in the same directory with this README.txt . )
3. Overwrite GT-P1000N Kernel Open Source to the GT-P1000(European) kernel open source code.
4. Run build_kernel_latin_n.sh
$ ./build_kernel_latin_n.sh
* Output files
- Kernel : Kernel/arch/arm/boot/zImage
- module : Kernel/drivers/*/*.ko
* How to Clean
- run build_kernel_n.sh Clean
$ ./build_kernel_n.sh Clean
* How to make .tar binary for downloading into target.
- change current directory to Kernel/arch/arm/boot
- type following command
$ tar cvf gt-P1000N-kernel.tar zImage
Landroid said:
do you have a linux workstation (virtual machine is enough)?
Click to expand...
Click to collapse
I'll install a VM, is Ubuntu ok? or do you have suggestions of something that will work better?
Landroid said:
are you familiar with the linux terminal and its commands?
Click to expand...
Click to collapse
Somewhat rusty...
So, I know what a kernel is but in Android what is refered as the Platform?
Thanks!

platform is for example android 2.2 froyo
and you are going to do exactly what uyou have read in this readme file its not so hard to do

Hi, did you manage to flash any Rom ?

[Q] How do I keep the bèta and normal source codes seperated

Hello everybody!
I've been thinking a while of running my own bèta channel and decided to start one.
There is something that I've wondered, how do I keep the original and bèta code seperated?
Is there a sdk for a beta channel or do I need to use a private Github repository?
If yes, can somebody please tell me how I set it up?
I've been trying and dying to get Github work with Eclipse, but it doesn't work
Thank you in advance!

Git is definitely the best way to do this, basically make a beta and release branch. Switching between the two is really easy once you have it all setup.
What are the specific problems you have been having with Git?

I got GitLab instald on a local server and I have a beta ans a master branch. The problen with git is that i know the basics, push, pull, add and commit thats is. I really don't know how to seperate the code of different versions (eg v.1 and v.2) in the same branch.
Let me give another exame the GitLab is a wonderfull project, but I can't delete a folder (all the magic happens within a webinterface), but I can delete the files one by one ... Nope takes to much time
How do I manage files trough git, from my workstation (remove directory's for example)
Is there a guide about git somewere? When i search for it on Google all i get is github results but i want git results.
Thanks for helping me out!
Appriciate it!!

Why do you need GitLab? From your requirements you just need Git client and remote repository (which can be github.com).
You might want to check Git Branching - Basic Branching and Merging.

I wanted an east to use git software. When installing GitLab the setup setups everything for you, so I don't have to run commands etc. which saves me a great amount of time.
Thanks for the link, I'll check it out later today!

I see. Basically to get started with GitHub you just need Git package (e.g. msysgit for windows).

Yeah, I got GitLab installed on a networked server.
Can you learn me a few tips 'n tricks?

Sure, you can start from here: https://help.github.com/articles/good-resources-for-learning-git-and-github/

Thanks!