KVM
---

Clone the repo:

    $ git clone git://git.kernel.org/pub/scm/virt/kvm/kvm.git
  
To test out of tree patches, it's cleaner to do in a new branch

    $ git checkout -b test_branch
  
Make a config file:

    $ make defconfig
  
Compile:

    $ make -j4 && make bzImage && make modules
  
Install:

    $ sudo -i
    $ make modules_install && make install
  
Build initramfs (as root):

    $ cd /boot
    $ dracut initramfs-3.19.0+.img 3.19.0+ --force


QEMU
----

Install buid dependencies of QEMU:

    $ yum-builddep qemu

Clone the repo:

    $ git clone git://git.qemu.org/qemu.git


Create a build directory to isolate source directory 
from build directory

    $ mkdir -p ~/build/qemu && cd ~/build/qemu

Run the configure script:

    $ ~/src/qemu/configure --target-list=x86_64-softmmu \
        --enable-debug 

Compile:

    $ make -j4

Boot a minimal:

    $ ./x86_64-softmmu/qemu-system-x86_64 --enable-kvm \
      -smp 2 -m 1024 /export/images/fedora.qcow2 \
      -nographic -stdio serial

[https://kashyapc.fedorapeople.org/virt/minimal-qemu.bash]


libvirt
-------

Install build dependencies of libvirt:

    $ yum-builddep libvirt
    $ dnf install @buildsys-build works

Clone the libvirt repo:

    $ git clone git://libvirt.org/libvirt.git && cd libvirt

Create a build directory to isolate source directory from build
directory:

    $ mkdir -p ~/build/libvirt && cd ~/build/libvirt

NOTE: You can look at `configure --help` and disable all drivers you
don't want/care about

Run the autogen script:

    $ ../src/libvirt/autogen.sh

Compile:

$ make -j4

Run tests:

    $ make check

Invoke libvirt programs without having to install them:

    $ ./run tools/virsh [. . .]

Or, optinally, prepare RPMs, (assumes `rpmbuild` setup  is properly
configured):

    $ make rpm


libguestfs
----------

Install build dependencies of libvirt:

    $ yum-builddep libguestfs

Clone the libguestfs repo:

    $ git clone git://github.com/libguestfs/libguestfs.git \
        && cd libguestfs

Run the autogen script:

    $ ./autogen.sh

Compile:

    $ make -j4

Run tests:

    $ make check

Invoke libguestfs programs without having to install them:

    $ ./run guestfish [. . .]