Develop Reference

"gpg: Can't check signature: No public key" upon initializing a repo from code aurora

I'm trying to run the following git repo command
repo init -u git://codeaurora.org/quic/le/le/manifest.git -b release -m [manifest xml] --repo-url=git://codeaurora.org/tools/repo.git --repo-branch=caf-stable
but I keep seeing the following gpg error:
gpg: Can't check signature: No public key
fatal: cloning the git-repo repository failed, will remove '.repo/repo'
I tried to follow the steps as stated here to no avail
curl http://commondatastorage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo

I ran into this and found out you need to have the right gpg key in the ~/.repoconfig folder
Similar to https://stackoverflow.com/a/63125058
But put the key in right place.
mkdir -p ~/.repoconfig/gnupg/
GNUPGHOME=~/.repoconfig/gnupg/ gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys 692B382C

If you dont want to locate the CAF key and download it; the following should work.
Install repo from -> https://source.android.com/setup/develop#installing-repo
Drop the --repo-url=git://codeaurora.org/tools/repo.git --repo-branch=caf-stable from your repo init command.

This below solution worked for me.
First delete the repo u installed with the bin directory.
rm -rf ~/bin
Then delete config file with the below commands.
rm -rf .repoconfig/ rm -rf .gnupg/ (if available)
Then install the repo with the below commands.
sudo apt-get install repo
Then to install the signature run the below commands.
repo init
This will download the required signatures.
That's it, Run the repo init -u <manifest url> -b <release> -m <manifest file>...
repo sync it will start the sync.
Experimented on Ubuntu version: 18.04

Install Git in Pydroid 3 terminal

I'm using Pydroid3 and would like to use Git in the Pydroid Terminal.
In my Termux terminal I was able to install Git as described here: Python and Git on Android
The git command is now only recognized in the Termux Terminal but not in Pydroid :(. Installation of Git with apt-get in the Pydroid Terminal is not possible.
Has anybody managed to install Git for Pydroid?

This is working for me; you might need to tweak the curl or configure commands if things fail. I haven't looked into ssh for now, only https.
# enter dev folder
cd $HOME
# set a prefix variable for convenience
export PREFIX="$(readlink -f "$PKG_CONFIG_PATH"/../..)"
# if you want git-remote-https, first build and install curl
curl -LO https://curl.se/download/curl-7.77.0.tar.bz2
tar -jxvf curl-7.77.0.tar.bz2
cd curl-7.77.0
./configure --prefix="$PREFIX" --disable-static --with-openssl --with-ca-path=/system/etc/security/cacerts --with-ca-bundle="$SSL_CERT_FILE"
make -j8 install
cd ..
# download and enter git sources
curl -LO https://www.kernel.org/pub/software/scm/git/git-2.32.0.tar.gz
tar -zxvf git-2.32.0.tar.gz
cd git-2.32.0
# reconfigure git for platform
./configure --prefix="$PREFIX" --without-tcltk --disable-pthreads LDFLAGS="-lssl -lcrypto -lz"
# if you didn't install curl, download autoconf's install script since there is no coreutils on android
# curl "http://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=blob_plain;f=build-aux/install-sh;hb=HEAD" -o install
# otherwise copy curl's install script in
cp ../curl-*/install-sh install
# build and install git
make -j8 install INSTALL="sh $(pwd)/install"

Stock Android OS downloading [AOSP] and sync issue

I have started my AOSP download with lot of hiccups.
I followed the google official site instructions.
$ mkdir ~/aosp/bin
$ PATH=~/aosp/bin:$PATH
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/aosp/bin/repo
$ chmod a+x ~/aosp/bin/repo
$ mkdir zero
$ cd zero
$ git config --global user.name "Your Name"
$ git config --global user.email "you#example.com
$ repo init -u https://android.googlesource.com/platform/manifest -b android-4.4.2_r1
$ repo sync -j2 -f
As of now my .repo folder is 40GB and sync is still on its been 2 days. Please can anybody help me, all I need is KitKat OS.
Also could anyone enlighten me about project-object and project directories in repo directory.
Thanks in advance

When you do:
repo sync -j2 -f
You are synchronizing everything, which is huge. Give this a try:
repo sync -j8 -c
This will only synch the initialized manifest, which is not as big. When you don't specify a manifest name with -m option, if falls to look for default.xml, which as I can see in https://android.googlesource.com/platform/manifest/+/refs/heads/android-4.4.2_r1 that's the manifest file for the branch you want.
Also -j specifies the threads used, nowadays you can give -j8 at least a try.
With -f you force the download, this does not affect on the size of what you download, nor the speed. You can drop it if desired.
Hope it helps!

After a week's struggle completed the repo sync of KITKAT OS from google. even though you select only a particular OS, It will go upto 58 GB. Out of that 58 GB your KITKAT OS will be only of 9.5 GB. Rest is your .repo in your WORKING DIRECTORY. After sync is complete you will find your OS source in your WORKING DIRECTORY along side .repo.
STEPS:
$ mkdir ~/bin
$ PATH=~/bin:$PATH
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
$ chmod a+x ~/bin/repo
$ mkdir WORKING_DIRECTORY
$ cd WORKING_DIRECTORY
$ git config --global user.name "Your Name"
$ git config --global user.email "you#example.com"
$ repo init -u https://android.googlesource.com/platform/manifest -b OS version
check with google's "source code tags and build" page to select your OS version.
$ repo sync -j18 -c
flags that can be used with repo sync
sync-j - The value for this will be the number of threads to use when syncing the system. Parallelization helps get the job done quicker, but could also get the computer or the network stuck. Using 4 threads is what commonly used for syncing.
sync-c - syncing only the current branch/tag from git. This will checkout for each project only the current branch/tag that we specify for it, and not any other branches that exists on the repository. This will help save some space and bandwidth (and also time), but if you’ll need to switch between branches on a specific project later on - you’ll need to fetch it manually.
it took 8 days for me to get this done as my internet speed is slow (100kbps).
Thank you #Olaia for all the help. hope this helps for anyone out there.

how to find size of android repository

I am following the below steps to download repo for building an android marshmellow image .
cd ~
$ mkdir myandroid
$ mkdir bin
$ cd myandroid
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
$ chmod a+x ~/bin/repo
$ ~/bin/repo init -u https://android.googlesource.com/platform/manifest -b android-6.0.1_r22
$ ~/bin/repo sync
after last step it has already download 18 GB and still going on
is there anyway to find the size of this repo before downloading it.
I have searched the following link
See the size of a github repo before cloning it?
but above method gives output of message : unknown file
how to find it ?

How to run git command to specific projects

I want to run a git command only to specific repositories.
I know 'repo forall' will help to run a command to all the git projects in that repo.
But, I want to run on specific projects.
For an example.
repo forall -c "git checkout -t remotes/origin/TESTBRANCH"
Will run the git command to checkout to TESTBRANCH for all projects.
But I want to checkout only few projects,
1. kernel
2. frameworks/av
3. hardware/qcom/media.
Tried as below,
repo forall -c "git checkout -t remotes/origin/TESTBRANCH" kernel frameworks/av hardware/qcom/media`
But, not working. Can anyone help?

As indicated by the documentation (repo help forall), the project names should go before the -c option:
repo forall kernel frameworks/av hardware/qcom/media \
-c "git checkout -t remotes/origin/TESTBRANCH"