error: failed to run custom build command for prost-build v0.6.1

[LukasRada]

Describe the bug
Running cargo build --release command ends with error:

error: failed to run custom build command for `prost-build v0.6.1`

Caused by:
  process didn't exit successfully: `/root/tari/target/release/build/prost-build-567322a74cee75bf/build-script-build` (exit code: 101)
--- stderr
thread 'main' panicked at 'Failed to find the protoc binary. The PROTOC environment variable is not set, there is no bundled protoc for this platform, and protoc is not in the PATH', src/libcore/option.rs:1188:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.

To Reproduce
Steps to reproduce the behavior:

1. Clone default branch (development)
2. Run command cargo build --release

Expected behavior
Successfully build app

Machine:

lscpu
Architecture:        armv7l
Byte Order:          Little Endian
CPU(s):              8
On-line CPU(s) list: 0-7
Thread(s) per core:  1
Core(s) per socket:  4
Socket(s):           2
Vendor ID:           ARM
Model:               3
Model name:          Cortex-A7
Stepping:            r0p3
CPU max MHz:         2000.0000
CPU min MHz:         200.0000
BogoMIPS:            12.00
Flags:               half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae

OS: Ubuntu 18.04.4 LTS (Bionic Beaver)

[CjS77]

@sdbondi - Is this fixed by #1790 ?

[sdbondi]

@CjS77 Nope - this error is because the protoc binary is not installed. Instructions for apt were PRd here: #1800

@LukasRada try

apt install libprotobuf-dev protobuf-compiler

[CjS77]

Ok, thanks @sdbondi.

I'm going to close this since the solution is already present.

[Zeus-Adin]

thanks @sdbondi, very helpful

[ekomic]

apt install libprotobuf-dev protobuf-compiler

this did not work for me

[delta1]

@ekomic make a new issue posting the error message you are getting

[ashWhiteHat]

I use alpine and fix with.

apk add protoc