Common errors:
glib-2.12 required to compile QEMU
ERROR: pixman not present. Your options:
(1) Preferred: Install the pixman devel package (any recent
distro should have packages as Xorg needs pixman too).
(2) Fetch the pixman submodule, using:
git submodule update --init pixman
Install:
yum install git glib2 glib2-devel pixman pixman-devel
git clone git://git.qemu-project.org/qemu.git
./configure
make
sudo make install