Missing libzkgroup on v0.7.1

[DutchForeigner]

Hi,
I'm getting the below error when trying to send an message:
"OpenJDK Server VM warning: You have loaded library /tmp/resource14973433511044593591.so which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c ', or link it with '-z noexecstack'.
WARNING: Support for new group V2 is disabled, because the required native library dependency is missing: libzkgroup"

Initially I tried to use https://github.com/AsamK/signal-cli/releases/download/v0.7.1/signal-cli-0.7.1.tar.gz
but as that was giving above error, I also tried to build it from source with Gradle v4.4.1, and that gave also the same error.

Looking at bug report See also "Bug 252041 - net-im/signal-cli: Update to 0.7.1" I thought it would have been fixed in a newer version but no luck so far....

Using:
Raspberry Pi 3, Raspbian Linux 10 (buster)
Java JDK 11.0.9.1
Gradle v4.4.1

[AsamK]

See https://github.com/AsamK/signal-cli/wiki/Provide-native-lib-for-libsignal

[DutchForeigner]

Thanks for that,
Hope you had a merry Christmas and wishing you a Happy New year/ Happy holiday season.

In the end it was not that straight forward…

So as FYI: below are the steps which worked for me, on a Raspberry Pi 3B with Raspbian GNU/Linux 10 (buster)
My main user is 'smarthome', replace it with 'pi' if that is still the main user.

Install required packages to be able to build signal-cli and dependent zklibrary

[smarthome@1234 ~]$ mkdir -p /home/smarthome/_downloaded

Install latest JAVA JDK (v11.0.9.1)

[smarthome@1234 ~]$ sudo apt update
[smarthome@1234 ~]$ sudo apt install default-jdk
[smarthome@1234 ~]$ java --version

Install latest version (v6.7.1) of Gradle

(https://gradle.org/install/)
Copy down binary-only from: https://gradle.org/next-steps/?version=6.7.1&format=bin
[smarthome@1234 ~]$ wget -P /home/smarthome/_downloaded https://services.gradle.org/distributions/gradle-6.7.1-bin.zip

[smarthome@1234 ~]$ sudo mkdir /opt/gradle
[smarthome@1234 ~]$ sudo unzip -d /opt/gradle /home/smarthome/_downloaded/gradle-6.7.1-bin.zip

Add gradle to the PATH:
[smarthome@1234 ~]$ export PATH=$PATH:/opt/gradle/gradle-6.7.1/bin

Check if all is ok by getting the version of Gradle:
[smarthome@1234 ~]$ gradle -v

Gradle 6.7.1

Install Rust:

https://www.rust-lang.org/tools/install
Run the below and follow instructions:
[smarthome@1234 ~]$ curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
Choose 1 Proceed with installation (default)

Once finished, add rust to the Path
[smarthome@1234 ~]$ export PATH="$PATH:/home/smarthome/.cargo/bin"

Check rust is working by getting its version:
[smarthome@Home ~]$ rustup --version
rustup 1.23.1 (3df2264a9 2020-11-30)
info: This is the version for the rustup toolchain manager, not the rustc compiler.

Get and build zkgroup library:

Download the Source code for zkgroup library v0.7.1 (https://github.com/signalapp/zkgroup/releases)
[smarthome@1234 ~]$ wget -O /home/smarthome/_downloaded/zkgroup-0.7.1.zip https://github.com/signalapp/zkgroup/archive/v0.7.1.zip

Extract content of zkgroup-0.7.1.zip to /home/smarthome:
[smarthome@1234 ~]$ unzip -d /home/smarthome /home/smarthome/_downloaded/zkgroup-0.7.1.zip

[smarthome@1234 ~]$ cd /home/smarthome/zkgroup-0.7.1
Check rustc version:
[smarthome@1234 ~]$ rustc --version
rustc 1.41.1 (f3e1a954d 2020-02-24)
[smarthome@1234 ~]$ make libzkgroup (note this takes several minutes (~6) to complete)
Once finished, the required file is: /home/smarthome/zkgroup-0.7.1/target/release/libzkgroup.so

Build signal-cli

https://github.com/AsamK/signal-cli "Building" section:
[smarthome@1234 ~]$ mkdir /home/smarthome/signal-cli_source
[smarthome@1234 ~]$ cd /home/smarthome/signal-cli_source
[smarthome@1234 ~]$ git clone https://github.com/AsamK/signal-cli.git
[smarthome@1234 ~]$ cd ./signal-cli
[smarthome@1234 ~]$ gradle build (note this takes several minutes (~10) to complete)
[smarthome@1234 ~]$ gradle installDist
[smarthome@1234 ~]$ gradle distTar

Update jar file with updated libzkgroup.so file

[smarthome@1234 ~]$ cd /home/smarthome/zkgroup-0.7.1/target/release/
[smarthome@1234 ~]$ zip -u /home/smarthome/signal-cli_source/signal-cli/build/install/signal-cli/lib/zkgroup-java-0.7.0.jar libzkgroup.so

Copy JAR File

[smarthome@1234 ~]$ cd /home/smarthome/signal-cli_source/signal-cli/build/distributions
[smarthome@1234 ~]$ mkdir -p signal-cli-0.7.1/lib/
[smarthome@1234 ~]$ cp /home/smarthome/signal-cli_source/signal-cli/build/install/signal-cli/lib/zkgroup-java-0.7.0.jar signal-cli-0.7.1/lib/

Update ZIP file

[smarthome@1234 ~]$ zip -u /home/smarthome/signal-cli_source/signal-cli/build/distributions/signal-cli-0.7.1.zip signal-cli-0.7.1/lib/zkgroup-java-0.7.0.jar

Update TAR file

[smarthome@1234 ~]$ tar --delete -vPf /home/smarthome/signal-cli_source/signal-cli/build/distributions/signal-cli-0.7.1.tar signal-cli-0.7.1/lib/zkgroup-java-0.7.0.jar
[smarthome@1234 ~]$ tar --owner='' --group='' -rvPf /home/smarthome/signal-cli_source/signal-cli/build/distributions/signal-cli-0.7.1.tar signal-cli-0.7.1/lib/zkgroup-java-0.7.0.jar

Updated signal-cli-0.7.1.tar is now in: /home/smarthome/signal-cli_source/signal-cli/build/distributions/

Install/export signal-cli

[smarthome@1234 ~]$ sudo tar xf /home/smarthome/signal-cli_source/signal-cli/build/distributions/signal-cli-0.7.1.tar -C /opt
[smarthome@1234 ~]$ sudo ln -sf /opt/signal-cli-0.7.1/bin/signal-cli /usr/local/bin/

• signal-cli is now installed on the Raspberry Pi
  Issue can be closed.
  :-)

[hennjo]

Hi there,

thank you for your detailed instructions. I tried to follow them on a rpi3b+ with 1 GB of RAM. This pi wasn't able to build the signal-cli instance because it ran out of RAM.
After that i used a rpi4 with 8 GB of RAM and it got it done, but gives me the following error:
signal-cli -u +ZZYYYXXXXXXXX register --voice OpenJDK Server VM warning: You have loaded library /tmp/resource18301514204854240517.so which might have disabled stack guard. The VM will try to fix the stack guard now. It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'. ERROR App - Error loading or creating state file: /tmp/resource18301514204854240517.so: /tmp/resource18301514204854240517.so: wrong ELF class: ELFCLASS64 (Possible cause: architecture word width mismatch)
The only difference is, that I used the 0.7.4 version of signal-cli

Does anybody have some insight into a solution?

In the meantime I'll try the file you uploaded below. Saw that only after logging into github.

[bruno00o]

hi,

at first, i had the same issue as you on my rpi3. i don't have an rpi4 so i've done @DutchForeigner's instructions several times and had the same problem as you on your rpi4.

the only way i managed to properly install signal-cli is by using @DutchForeigner's TAR file on his github
you'll get signal-cli v0.7.1 but it works!

[davemacrae]

After trying to get @DutchForeigner's code to compile on my Rpi4 I had similar issues with the ELF error.

However, when I just replaced the distributed zkgroup file with one I build using the instructions above, everything worked well, i.e. I have signal-cli V0.7.4 running and being able to access V2 groups.

I've placed the file in my Git repo should anyone want to use it.

[benni2108]

I have the same problem. But sadly your solution doesn't work for me. The Problem is that signal-cli 0.7.1 is not functioning and with 0.8.1 i get a "Missing required native library dependency: libsignal-client" error.

Do you have any ideas what could possibly be the problem. How do I add the depenency?

[Atomic-Bean]

The "libsignal-client" error is referring to this sort of stuff. https://github.com/AsamK/signal-cli/wiki/Provide-native-lib-for-libsignal

[bruno00o]

thank you for your work @DutchForeigner! i tried to do same on rpi 3 too but it crashes everytime i do the gradle buil... Does anyone know an alternative or a solution pls?

[DutchForeigner]

I've now posted the TAR file, I build using the earlier mentioned steps on my Raspberry PI 3, on Github.
Hope that one will work for you.
Github link

[bruno00o]

it worked!! thank you so much! maybe it was because of the newest version of signal-cli

[DutchForeigner]

Hi, signal-cli v0.7.4 tar file, for on the Raspberry Pi, is now also on my Github page.
Gitub link

[DutchForeigner]

Hi, signal-cli v0.8.1 tar file, for on the Raspberry Pi, is now also on my Github page, with updated compile 'manual'
Gitub link