Compile package for Alpine Linux

Install Alpine Linux inside Virtual Box using this image, assign to DVD device, set network adapter to bridged, boot it, and login with root

Then start the setup script

# setup-alpine

Walk through script:

Keyboard layout: us
Keyboard variants: us
Networking eth0, bridge, dhcp
Root password
Timezone: Europe/Amsterdam
HTTP/FTP, proxy none [enter]
NTP client: chrony [enter]
Mirror: f (fastest)
SSH server: openssh [enter]
Disk(s): sda, how: sys, continue: y
Shutdown live cd using poweroff command and remove DVD image, restart VM.

Install needed environment:

# apk add alpine-sdk
# adduser <yourusername>
# cat <<EOF >/etc/sudoers.d/<yourusername>
  <yourusername> ALL=(ALL) ALL'
  EOF

Now logout of the root account, and login as <yourusername>. From here on everything can be done in a normal user account, and operations that require superuser privileges can be done with sudo.

Define git settings and clone aports repository:

$ git config --global user.name "Your Full Name"
$ git config --global user.email "your@email.address"
$ git clone git://git.alpinelinux.org/aports
$ sudo vi /etc/abuild.conf

Most of the defaults can be left alone, unless you are developing for a custom platform, in which case the comments in the file should guide you. The one field to edit is PACKAGER, so that you can get credit (or blame) for packages you create, and uncomment MAINTAINER.

Use 'abuild -r' command to install dependency packages automatically.

$ sudo addgroup <yourusername> abuild

We also need to prepare the location where the build process caches files when they are downloaded. By default this is /var/cache/distfiles/. To create this directory and ensure that it is write-able, enter the following commands:

$ sudo mkdir -p /var/cache/distfiles
$ sudo chmod a+w /var/cache/distfiles
$ abuild-keygen -a -i

I want to build arp-scan for Alpine Linux 3.9, so I followed these steps:

$ newapkbuild arp-scan

Resources:
https://wiki.alpinelinux.org/wiki/Install_Alpine_on_VirtualBox
https://wiki.alpinelinux.org/wiki/Installation#Installation_Handbook
https://wiki.alpinelinux.org/wiki/Alpine_Linux_Init_System
https://wiki.alpinelinux.org/wiki/Creating_an_Alpine_package#Setup_your_system_and_account