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Building on armhf linux - Armbian - Orange Pi

Armbian.com offers opensource "Linux for arm" kernels with Debian and Ubuntu distros. They have come from Rev 5.05 in Apr, 2016 to 5.38 now.

These instructions are valid for Orange Pi PC Plus(H3 armhf) and OPi PC 2(H5 arm64), Armbian 5.75 Ubuntu 18.04 Bionic, and Debian 9 Stretch and OpenCPN 5.0.0 Mar, 2019.
(I hate instructions that are not dated!)

Update the system software

orangepipc$ sudo apt update
orangepipc$ sudo apt upgrade

OS Fixes required

Some modules require a lot of memory to compile and the system comes with only 128MB so I plugged in a thumb-drive with a linux 1.2GB swap partition and

orangepipc$ sudo mkswap -f /dev/sda5
orangepipc$ sudo swapon /dev/sda5

Follow the standard Linux build instructions for Ubuntu/Debian:

Clone the OpenCPN repository

As a normal user get the source code

git clone https://github.com/OpenCPN/OpenCPN.git
cd OpenCPN
mkdir build
cd build

Compile, Package and Install

cmake -DCFLAGS="-O2 -march=native" -DBUNDLE_DOCS=OFF -DBUNDLE_TCDATA=ON -DBUNDLE_GSHHS=LOW ../
make package

Install some charts and test in the normal way.

Compile, Package and Install

Follow the standard Linux build instructions for Ubuntu/Debian:

cmake -DCFLAGS="-O2 -march=native" -DBUNDLE_DOCS=OFF -DBUNDLE_TCDATA=ON -DBUNDLE_GSHHS=LOW ../
make package

Install some charts and test in the normal way.