TL;DR

To compile and install Libreswan on the LINUX VM (the default), run:

./kvm install

(By default, Libreswan is only built on the LINUX VM (a stable version of Fedora)).

Compiling Libreswan

To compile libreswan ready for VM testing, use:

./kvm install

Should the build fail, the VM’s console can be accessed using:

./kvm sh linux
linux# gmake
linux# vi problem-file.c

(Should the build fail, VM is left running making this quick)

Finally, to compile from scratch, first uninstall the build VM(s) using:

./kvm uninstall

typically this isn’t needed.

Building On Other Platforms

To compile and install Libreswan on other platform run:

./kvm install PLATFORM

where PLATFORM is alpine, debian, fedora, freebsd, netbsd, openbsd.

for instance:

./kvm install alpine

like for LINUX, the build can be debugged by accessing the platform’s console:

./kvm sh alpine

Note: it may take some time as the platform’s VM will need to first be built.

To make PLATFORM part of the default build (included in ./kvm install) enable it in Makefile.inc.local with lines like:

KVM_ALPINE=true
KVM_DEBIAN=true
KVM_FEDORA=true
KVM_FREEBSD=true
KVM_NETBSD=true
KVM_OPENBSD=true