im so in the mood to learn and make some roms....i wanted to ask can somoene help me by guiding me or maybe linking me to the right direction because i really want to customize roms...not too hard but to be able to tweak a bit on roms...pleae can someone help???
I'd recommend starting with going to the Android Open Source Project. They have full docs on how to download and compile the source code. Once you've successfully built a stock image you can start mixing and matching or tweaking code.
You can also Google things like "building froyo source" and such to find tutorials. Many of those will be for specific phones but the general principals are similar.
If you want to jump in the deep end Cyanogen's wiki has a tutorial on building Cyanogenmod from source.
Sent from my Nexus One using XDA App
ok thanks alot!
Hey Guys,
I'm a developer for a living, and I'm interested in possibly working on a custom rom for my captivate. I was doing some research on how to get started, but the stuff I found was for HTC phones and involved using a starter that only works for HTC stuff.
Where can I go to find information on doing this? I'm largely interested in trying to port gingerbread, but my understanding was that until we have the full source this wasn't really possible (at least for something actually useable on a daily basis). I see supercurio is working on gingerbread, so information specific to this would be really helpful.
Thanks guys, and sorry if this should have been put in the QA section, I figured it was related to development, and could possibly be a sticky if it leads to useful info.
Pretty broad question. First requirement, is obviously...learn java.
I'm not sure if there's any specific "HOW-TO CODE YOUR OWN CAPTIVATE ROM" threads anywhere; there's general information available on http://developer.android.com , but modifying ROM's depends on the device it was written for.
As far as porting gingerbread, it will be very difficult without source and will definitely require quite a bit of kernel work. For information specific on this, supercurio would be the one to ask. Of course, the IRC's are also a great place to get information.
By the way, welcome to XDA! And I commend your motivation to develop stuff for the community here.
http://forum.xda-developers.com/showthread.php?t=869614
Doc over in the I9000 forums has the above thread started. I look there.
geokhentix said:
Pretty broad question. First requirement, is obviously...learn java.
I'm not sure if there's any specific "HOW-TO CODE YOUR OWN CAPTIVATE ROM" threads anywhere; there's general information available on http://developer.android.com , but modifying ROM's depends on the device it was written for.
As far as porting gingerbread, it will be very difficult without source and will definitely require quite a bit of kernel work. For information specific on this, supercurio would be the one to ask. Of course, the IRC's are also a great place to get information.
By the way, welcome to XDA! And I commend your motivation to develop stuff for the community here.
Click to expand...
Click to collapse
Again, I am a developer for a living. I know Java, I'm not looking for coding tutorials. I'm looking for information specifically regarding the captivate.
As far as gingerbread, it sounds like what you are saying is that what people like supercurio are working on is not really gingerbread? More of a Frankenstein created with the sdk, mashing together 2.2 kernels and what has been released for 2.3?
lbbo2002 said:
http://forum.xda-developers.com/showthread.php?t=869614
Doc over in the I9000 forums has the above thread started. I look there.
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Looking at that thread, it appears the roms being made are just edited versions of already compiled roms? Is samsung not required to post the full source of their roms?
I'm assuming the issue with starting with the original android source, is that we wouldn't have drivers for half of the hardware in the phone. Is the only choice then to load the already compiled drivers from the samsung builds into the rom?
epoplive said:
Again, I am a developer for a living. I know Java, I'm not looking for coding tutorials. I'm looking for information specifically regarding the captivate.
As far as gingerbread, it sounds like what you are saying is that what people like supercurio are working on is not really gingerbread? More of a Frankenstein created with the sdk, mashing together 2.2 kernels and what has been released for 2.3?
Click to expand...
Click to collapse
There are different levels of making ROMs IMO.
You can combine work from others and make your own ROM. This requires no coding experience. For instance, I took JH7_OTA, dropped in Atinms Voodoo 3 kernel, removed bloatware, added my own custom framework (icons), etc., signed it and flashed it.
Then there is the whole Kernel side of things that requires an entire development environment (Linux) and C/C++ programming skills. I'm trying to get to this point. You can start by downloading the source and building it in your own environment familiarizing yourself with the codebase.
Indeed. Packing a ROM and making the contents of the ROM are two different sides of the spectrum. Even some minor framework modifications can be performed by the most tech-inept, as long as they have a good resource to work off of.
epoplive said:
Again, I am a developer for a living. I know Java, I'm not looking for coding tutorials. I'm looking for information specifically regarding the captivate.
As far as gingerbread, it sounds like what you are saying is that what people like supercurio are working on is not really gingerbread? More of a Frankenstein created with the sdk, mashing together 2.2 kernels and what has been released for 2.3?
Click to expand...
Click to collapse
I was only prodding fun when I mentioned learning Java, just to break the ice. All I'm saying is trial and error is the best way to learn Android if you're already a decent programmer. Without knowing what the source code looked like before Samsung owned it, we don't really have a base environment to work off of, which means we are modifying work that was already modified from stock; which is why it will be pretty hard to find a lot of definitive coding information about the Captivate.
Supercurio isn't making a frankenstein 2.2-2.3 hybrid. The kernel is where all of the information about your hardware resides. Supercurio needs to take the Gingerbread kernel from the Nexus S, and modify it to run with our hardware. You can't run a 2.3 ROM without a 2.3 kernel; so we CAN'T use a 2.2 kernel to run full gingerbread; and since a 2.3 kernel doesn't exist for the Captivate, he is using the Nexus s's kernel as a base, or as a reference to merge the differences between the two, creating a kernel that will support the Nexus S ROM on a phone that isn't the Nexus S.
epoplive said:
Looking at that thread, it appears the roms being made are just edited versions of already compiled roms? Is samsung not required to post the full source of their roms?
I'm assuming the issue with starting with the original android source, is that we wouldn't have drivers for half of the hardware in the phone. Is the only choice then to load the already compiled drivers from the samsung builds into the rom?
Click to expand...
Click to collapse
Correct. We don't have the source code for Froyo yet for the Captivate(or an OTA for that matter ), a lot of ROM's being made are based off of the SGS I9000 2.2 source, and because we have that source, we have a pretty much fully functional "captivated" i9000 kernel.
geokhentix said:
Indeed. Packing a ROM and making the contents of the ROM are two different sides of the spectrum. Even some minor framework modifications can be performed by the most tech-inept, as long as they have a good resource to work off of.
I was only prodding fun when I mentioned learning Java, just to break the ice. All I'm saying is trial and error is the best way to learn Android if you're already a decent programmer. Without knowing what the source code looked like before Samsung owned it, we don't really have a base environment to work off of, which means we are modifying work that was already modified from stock; which is why it will be pretty hard to find a lot of definitive coding information about the Captivate.
Supercurio isn't making a frankenstein 2.2-2.3 hybrid. The kernel is where all of the information about your hardware resides. Supercurio needs to take the Gingerbread kernel from the Nexus S, and modify it to run with our hardware. You can't run a 2.3 ROM without a 2.3 kernel; so we CAN'T use a 2.2 kernel to run full gingerbread; and since a 2.3 kernel doesn't exist for the Captivate, he is using the Nexus s's kernel as a base, or as a reference to merge the differences between the two, creating a kernel that will support the Nexus S ROM on a phone that isn't the Nexus S.
Correct. We don't have the source code for Froyo yet for the Captivate(or an OTA for that matter ), a lot of ROM's being made are based off of the SGS I9000 2.2 source, and because we have that source, we have a pretty much fully functional "captivated" i9000 kernel.
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Click to collapse
Ah, thanks, that's pretty much the information I was looking for.
Hi,
I'm trying to build cyanogenmod 6 (froyo) from sources on github for G1.
Sidenote. The reason I'm trying to do this is i'd like to modify kernel parameters. I'm trying to make the phone talk to external device using built in serial port. I can do it with my current CM6, but it looks like serial debugger engages and starts responding to the device and also steals some of the data being sent to phone.
To build I used instruction posted at cyanogen wiki "HTC Dream & Magic: Compile CyanogenMod (OS X)" which covers gingerbread but checked out froyo-stable branch at first. I know that gingerbread version stopped supporting G1 at some point last year.
Without much success even after fixing manifest to point to updated repo urls from kernel.org to googles repo etc. The problem is that apache-http seems incompatible with old sources and it is referenced by head.
I also tried froyo branch, but it doesn't build as well because something seem to be broken for dream_sapphire, and it is not present in the devices anymore.
I've tried searching for compilation errors, and general build questions/instructions here and on cyanogen's forum, but looks like CM6 is not very active these days.
Can someone point me into right direction where to search for relevant info on building it? Would getting a proper revision help or should I combine stuff from several branches to make it work?
I've already spent quite a lot of time figuring out how build is being configured and how things stitch together but without much progress on the actual build.
And with times required to sync a whole repo and build it, it is becoming frustrating.
Any help would be muchly appreciated!
Regards,
Oleg
It's dead.
I also wanted to make a cm6 rom, but I couldn't get anything to work.
I got the addresses all updated but it looks like a bunch of the files have completely dissappeared. You may be able to make it skip those, but then it may not work completely.
Go for AOSP?
Now that's a shame. I wanted to build CM because I'm familiar with it and the other thing is that they have reasonable instructions about building it. But at least I don't need to waste my time trying to figure out how to fix it.
In fact I don't need any extras they provide, a bare android would suffice to me if all the sensors and connectivity would be available. But I'm not familiar with internals of building vendor specific stuff. My understanding was that I need proprietary parts together with AOSP to build a working ROM and that's one of the things CM guys did. Correct me if I'm wrong.
aliher1911 said:
Now that's a shame. I wanted to build CM because I'm familiar with it and the other thing is that they have reasonable instructions about building it. But at least I don't need to waste my time trying to figure out how to fix it.
In fact I don't need any extras they provide, a bare android would suffice to me if all the sensors and connectivity would be available. But I'm not familiar with internals of building vendor specific stuff. My understanding was that I need proprietary parts together with AOSP to build a working ROM and that's one of the things CM guys did. Correct me if I'm wrong.
Click to expand...
Click to collapse
Nope AOSP is as easy to build now
Go to the android site and follow directions
Google for "build android"
At the part when doing repo init you need to get the right branch
Go to "build for devices" then scroll down for recommended branches and look for the dream
One thing you'll need to do differently is do "make otapackage" instead of plain "make"
And once that's done you'll need to tweak the zip and get rid of the "recovery" folder and tweak the updater-script
Oh yeah, and I don't know exactly how you would do this part, but you'll need to get the source for a newer kernel in there, like ezterry kernel and use it with 2708+ radio/spl
Unless you wanna use the AOSP kernel & spl & radio which is old
What I did is just flash his kernel after the rom, but you want to do kernel stuff so yeah...
Sent from my HTC Dream using Tapatalk
Hello all. I've recently been trying to get into Android development, more specifically Kernel development. I've played around with some kitchens and looked at the GB kernel sources from Samsung and tweaked it around.
Previously I previously learned Java to a point where I can put basic lines down and also more advanced stuff but with a bit of help here and there.
I have one question though, what would be the recommended path for creating an ICS Kernel. My plan is to start of with something "stock" and build up but I'm not quite sure what to consider stock seeing as the S1 never got ICS officially. Would I have to use CM9's Kernel sources and if so where do I acquire them.
I also have a good understanding of Ubuntu and its terminal and have a functional idea of what I'm doing there.
I've done some searching and found many dated and non-specific references on building AOSP for your device. I didn't even find anything referencing lollipop. I was wondering if somebody had written up some device specific instructions for the m7. I'm looking for information like pulling in the correct binaries and kernel source.
91ludesit said:
I've done some searching and found many dated and non-specific references on building AOSP for your device. I didn't even find anything referencing lollipop. I was wondering if somebody had written up some device specific instructions for the m7. I'm looking for information like pulling in the correct binaries and kernel source.
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Click to collapse
Which ROM are you looking for? I found the instructions for building CyanogenMod for the Nexus 6 to be helpful when I rebuilt CM7 for the original Droid Incredible. I don't see any reason it can't be extended to the M7 and lollipop--I can indicate the appropriate changes, if that's helpful.
wiki.cyanogenmod.org/w/Build_for_shamu
I'm just wanting to build straight from aosp with maybe a custom kernel source.
91ludesit said:
I'm just wanting to build straight from aosp with maybe a custom kernel source.
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Click to collapse
Ah. Well, I'm not an expert by any means, but I don't think it's quite that straightforward. The Android source released by Google has no support for any devices except Nexus devices. Various ROMs, CyanogenMod being the biggest, have created open-source device trees to support additional devices. In the source tree for the device that I built for (Droid Incredible), for example, there is code for "liblights", "libsensors", a kernel module, some firmware, some configuration tweaks for various system apps like Camera and Torch--and a configuration file for the kernel. So if you want to compile AOSP for your m7, you'll have to port all that code over to the AOSP tree.
You might find it valuable to try building CM12 for your device. If you can do that successfully, then you can start tweaking with the kernel config that CM provides to suit your needs. Building CM is also very well documented, and once you've done that, it's more clear how you'd go about trying to build AOSP, and you can use the stuff that CM has done to help you port to AOSP if you want.
Here's Google's information on building straight AOSP:
https://source.android.com/source/building-devices.html
Here are CyanogenMod's guides on building for m7 and tweaking the kernel config:
http://wiki.cyanogenmod.org/w/Build_for_m7
http://wiki.cyanogenmod.org/w/Doc:_integrated_kernel_building
Here is an XDA Developer guide to porting a device from one AOSP-based ROM to another:
http://xda-university.com/as-a-developer/porting-aosp-roms-using-source-code
Thanks for the info, that's what I was afraid of. I was wanting to build something like the Google play edition, but with all the latest security updates.