Develop Reference

webrtc_android native api not find the AppRTCMobile example

I'm on ubuntu 16.04 and try to install on my lollipop 5.1 tablet, native api webrtc example (AppRtcMobile example).
I successfully installed chromium on my lollipop device. Now after removing the folders used to install chromium on the lollipop device from the ubuntu pc I'm trying to compile an example project about webrtc using the grandle system or adb at the command line. But the compilation always stops at the same point.
Unfortunately, I'm new to git, ninja, fetch and gn, so I do not understand where the error is.
I follow the procedure that I describe below (as I understand that the commands work) and create 3 different installation directories so as to install even on devices other than "arm".
git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
export PATH=$PATH:/my-path/to/depot_tools
mkdir ~/webrTEST && cd ~/webrtcTEST
fetch --nohooks webrtc_android
gclient sync
./build/install-build-deps.sh
gn gen out/DebugArm --args='target_os="android" target_cpu="arm"'
gn gen out/DebugArm64 --args='target_os="android" target_cpu="arm64"'
gn gen out/DebugX64 --args='target_os="android" target_cpu="x64"'
ninja -C out/DebugArm
ninja -C out/DebugArm64
ninja -C out/DebugX64
. build/android/envsetup.sh
ninja -C out/DebugX64 AppRTCMobile
I try to study more than one "tutorial" and the offial guide too, but ninja retur everytime the same result:
myuser#mymachine:~~/webrtcTEST/src$ ninja -C out/DebugX64 AppRTCMobile
ninja: Entering directory `out/DebugX64'
ninja: no work to do.
Anyone can suggest my where is/sre my error?
regards
bkt
UPDATE:
using ls command not find AppRTCMobile but other app example or other ...
the command:
ninja -C out/DebugX64 :xxxx/xxxx/xxxx
work great ... so at these point the question change into:
where is the old AppRTCMobile example located or which is the new name of the example that allows me to android lollipop to use the server google appr.tc ??
Any how if in my manner of install the webrtc-android git there are some error please help my to find it.
regards
bkt

I did not understand the reason, but by deleting everything and re executing the procedure written in the application I got the desired result and I compiled AppRTCMobile.

How to fix cannot find libgcc.a: No such file or directory error

I'm trying to make a standalone compile of the kernel for my android phone, using Google Toolchain, and have already tried Uber and linarc.
All of them give the same error, which I don't understand:
/home/aayushgupta219/kernel/toolchain64/bin/aarch64-linux-android-ld: cannot find libgcc.a: No such file or directory
/home/aayushgupta219/kernel/toolchain64/bin/aarch64-linux-android-ld: cannot find libgcc.a: No such file or directory
Makefile:814: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1
Here is a copy of the source.
Here is a copy of the logfile

OK. In case anyone is having same error and finding no fix here is my own fix for it. I was on Ubuntu 16.04 having gcc5 and was getting this error. I upgraded to Ubuntu 17.04 with gcc6 preinstalled and now no more such errors.

-Fist of all
use command
gcc -m32 -print-libgcc-file-name.
then use
sudo apt-get install -y build-essential gdb git vim
sudo apt-get install gcc-multilib
if it dosent work.
-Second
gcc -m32 -print-libgcc-file-name will give you a path that include libgcc.a.
just copy that to this place.
that path is /usr/lib/gcc/x86_64-linux-gnu/7/32/libgcc.ain my computer
use cp /usr/lib/gcc/x86_64-linux-gnu/7/32/libgcc.a ./

repo: command not found in automated bash script to build cyanogenmod

I am running linux mint 17.2, I have repo installed and the path to repo is added to my .bashrc. I have previously initiated my repo.
I have followed the instructions on the Android Source Downloading and How to Build CyanogenMod pages.
The problem is: I have written a bash script to automate a number of the commands I would like to use to start a build. My script in a simple form is the following:
#!/bin/bash
cd ~/Android/Cyanogenmod/cm12_1/android/system
source build/envsetup.sh
repo sync --force-sync -j8
exec $SHELL
When I run this, it reports:
/home/username/Desktop/Cyanogenmod_cm12_1_Grouper_Build : line 4 repo: command not found
If I copy and paste each line into a fresh terminal instance (or by just running a script of #!/bin/bash exec $SHELL to open a terminal) it works perfectly.
What I have tried: I have tried including a sleep 10 before the repo sync --force-sync -j8 but that made no difference. I have also tried explicitly initiating the repo and force adding it to my PATH for the current terminal session directly before attempting the repo sync --force-sync -j8. The code for that test was the following:
#!/bin/bash
mkdir -p ~/Android/Cyanogenmod/bin
curl https://storage.googleapis.com/git-repo-downloads/repo > ~/Android/Cyanogenmod/bin/repo
chmod a+x ~/Android/Cyanogenmod/bin/repo
cd ~/Android/Cyanogenmod/cm12_1/android/system/
source build/envsetup.sh
PATH=~/Android/Cyanogenmod/bin/repo:$PATH
repo sync --force-sync -j8
exec $SHELL
The following 2 questions have a similar title, but neither are my question, this and this.
Any help or suggestions would be great, thank you!

To summarize, there turned out to be 2 problems. The first, was in my attempted solution of manually setting the path in the script as PATH=~/Android/Cyanogenmod/bin/repo:$PATH should have been just PATH=~/Android/Cyanogenmod/bin:$PATH.
The second, and overall larger problem, was an incorrectly added PATH variable (to repo) in my .bashrc. This was fixed by adding the line export PATH=$PATH:$HOME/Android/Cyanogenmod/bin to the end of my .profile, followed by logging out/in.

Android tracedmdump post_trace: command not found malformed trace

I am attempting to use tracedmdump to parse trace files off the Android emulator. I have gone backwards and forwards with the Android OS repo, building the kernel, etc, and I can only assume I missed a step since when I run tracedmdump I get the output:
-bash: post_trace: command not found
***
*** Error: malformed trace. Did you remember to exit the emulator?
***
I'm getting my trace files through:
$ android create avd -n <emu name> -t <target id> -p <my dir> -s <skin> -b armabi-v7a -c 256M -f
$ emulator -trace <folder name> -avd <avd name> -memory 2048 -gpu on -debug-init
then once the emulator is going I use F9 to start then stop tracing.
I've looked, and there's no sign of post_trace anywhere on my machine. I have found 0 resources for why this might be, so I'm lead to believe that something quietly failed in my build process, but I have no idea what it could possibly be. I'm on Mac OSX, and attempting to use the manta kernel, but I don't know what other information could be useful. Please help!

Try cd into /sdk/emulator/qtools folder, and type mm command option to compile those tools.

NDK build error with cygwin

i am tying to build a tesseract project to use as a library for my project. I am getting this error with cygwin when trying to build on windows 7 with User Account Controls turned off.
$ /cygdrive/c/android-ndk-r8/ndk-build
SharedLibrary : liblept.so
C:/android-ndk-r8/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/../lib/gcc/arm-linux-androideabi/4.4.3/../../../../arm-linux-androideabi/bin/ld.exe: ./obj/local/armeabi/libgnustl_static.a: No such file: Permission denied
collect2: ld returned 1 exit status
/cygdrive/c/android-ndk-r8/build/core/build-binary.mk:369: recipe for target `obj/local/armeabi/liblept.so' failed
make: *** [obj/local/armeabi/liblept.so] Error 1
please let me know what i should do to build the project.

Sorry It's my first time answering a question.
I was having a same issue as yours.
Then I solve it using cygwin bash with command: $ chmod -R 777 /cygdrive/c/android/workspace
C:/Android/workspace is my Eclipse work space.
Some one here gave me the insight

A lot of people have struggled with compiling tesseract under Windows, and Cygwin is normally suggested, however its often not necessary.
Have you tried looking at the tess-two project on github? Its tesseract wrapped with some handy android classes, compiling a running is simply a case of :
git clone git://github.com/rmtheis/tess-two tess
cd tess
cd tess-two
ndk-build
android update project --path .
ant release
I've been able to compile the above on 3 windows7 machines, a mac, and ubuntu without any issues.

if you're developing under windows, go to the file, and change it's premissions to full control.
it will be in /obj dir