# Zrok on raspberry says "Floating point exception"

**URL:** <https://openziti.discourse.group/t/zrok-on-raspberry-says-floating-point-exception/2869>\
**Category:** Support\
**Created:** [July 19, 2024, 10:01am UTC](https://openziti.discourse.group/t/zrok-on-raspberry-says-floating-point-exception/2869 "2024-07-19T10:01:01Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![pakagi](https://yyz2.discourse-cdn.com/free1/user_avatar/openziti.discourse.group/pakagi/32/2322_2.png) [@pakagi](https://openziti.discourse.group/u/pakagi)\
**Post date:** [July 19, 2024, 10:01am UTC](https://openziti.discourse.group/t/zrok-on-raspberry-says-floating-point-exception/2869/1 "2024-07-19T10:01:01Z")

</div>

Hello,

I'm trying to make zrok work on raspberry pi 4, using 32bit raspbian os. I have tried installing zrok either from deb package (zrok\_0.4.35-1\_armhf.deb) or from tarball (zrok\_0.4.35\_linux\_armv7.tar.gz), in both cases it says:

```auto
root@rapik:~# zrok version
Floating point exception

```

Some more info:

```auto
root@rapik:~# uname -a
Linux rapik 6.6.31+rpt-rpi-v7l #1 SMP Raspbian 1:6.6.31-1+rpt1 (2024-05-29) armv7l GNU/Linux

root@rapik:~# uname -m
armv7l

root@rapik:~# file /opt/openziti/bin/zrok
/opt/openziti/bin/zrok: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.3, BuildID[sha1]=a834950618f0a3820225f575176a648edd3eea29, for GNU/Linux 3.2.0, stripped

```

Please help...

---

<div class="post-metadata">

**Author:** ![qrkourier](https://yyz2.discourse-cdn.com/free1/user_avatar/openziti.discourse.group/qrkourier/32/52_2.png) [@qrkourier](https://openziti.discourse.group/u/qrkourier)\
**Post date:** [July 24, 2024, 4:52pm UTC](https://openziti.discourse.group/t/zrok-on-raspberry-says-floating-point-exception/2869/2 "2024-07-24T16:52:44Z")

</div>

I can reproduce this floating point exception in an emulated arm/v7 container and I'm working to diagnose the issue.

I noticed that it was necessary to link the interpreter before `zrok` would run in that environment (Debian 11, 12).

```bash
ln -sfvn /lib/ld-linux-armhf.so.3 /lib/ld-linux.so.3

```

---

<div class="post-metadata">

**Author:** ![qrkourier](https://yyz2.discourse-cdn.com/free1/user_avatar/openziti.discourse.group/qrkourier/32/52_2.png) [@qrkourier](https://openziti.discourse.group/u/qrkourier)\
**Post date:** [July 24, 2024, 9:24pm UTC](https://openziti.discourse.group/t/zrok-on-raspberry-says-floating-point-exception/2869/3 "2024-07-24T21:24:57Z")

</div>

@pakagi I can also reproduce the error with an arm/v7 emulated chroot and found it did not recur if `zrok` is statically linked. Can you confirm this branch works on your arm64 Raspberry Pi with a 32bit OS?

> <https://github.com/openziti/zrok/pull/708>

If you check out that branch with Git and change to the working directory you can build it with Docker like this and the binary will be in `./dist/zrok-armv7_linux_arm_7/zrok`.

```bash
docker buildx build -t zrok-builder ./docker/images/cross-build --load;
docker run --user "$UID" --rm --volume=${HOME}/.cache/go-build:/usr/share/go --volume $PWD:/mnt zrok-builder arm;

```

If you DM me I can attach a binary build for you instead.

---

<div class="post-metadata">

**Author:** ![qrkourier](https://yyz2.discourse-cdn.com/free1/user_avatar/openziti.discourse.group/qrkourier/32/52_2.png) [@qrkourier](https://openziti.discourse.group/u/qrkourier)\
**Post date:** [July 26, 2024, 7:50pm UTC](https://openziti.discourse.group/t/zrok-on-raspberry-says-floating-point-exception/2869/4 "2024-07-26T19:50:48Z")

</div>

I ended up taking a different approach and changed the compiler to target `armhf` specifically. It is now available as a release: [https://github.com/openziti/zrok/releases/download/v0.4.36/zrok\_0.4.36\_linux\_armv7.tar.gz](https://github.com/openziti/zrok/releases/download/v0.4.36/zrok_0.4.36_linux_armv7.tar.gz)

Please let us know if it works on your 32bit OS w/ ARM/v7 CPU!

If you happen to have an ARM/v7 CPU that is `armel`, not `armhf`, there are build instructions available in the repo here: [zrok/docker/images/cross-build/README.md at v0.4.36 · openziti/zrok · GitHub](https://github.com/openziti/zrok/blob/v0.4.36/docker/images/cross-build/README.md)

TL;DR

Substitite latest release for `v0.4.36` from [Release v0.4.36 · openziti/zrok · GitHub](https://github.com/openziti/zrok/releases/latest)

```bash
git clone --branch=v0.4.36 --single-branch --depth=1 https://github.com/openziti/zrok.git;
cd ./zrok;
docker buildx build -t zrok-builder ./docker/images/cross-build --load;
docker run --user "${UID}" --rm --volume=${HOME}/.cache/go-build:/usr/share/go --volume "${PWD}:/mnt" zrok-builder armel;
file dist/zrok-armel_linux_arm_7/zrok;

```