git clone http://pari.math.u-bordeaux.fr/git/pari.git
cd pari

tar xf pari-2.8-*.tar.gz
cd pari-2.8-*

./Configure --prefix=GPDIR --mt=pthread 
make -j4 gp
make doc
make statest-all
make install
make install-bin-sta
./Configure --prefix=GPDIR.dbg -g
make -j4 gp
make install -C Olinux-x86_64.dbg
GPDIR/bin/gp

histfile = "~/.gp\_history"
colors = "lightbg" \\ or "darkbg"
lines = 40
parisizemax = 4G \\ or the maximum amount of memory 
                 \\ GP can use (important)
read "~/.gprc.gp"

git clone http://pari.math.u-bordeaux.fr/git/gp2c.git
cd gp2c
./autogen.sh

tar xf gp2c-0.0.9pl5.tar.gz
cd gp2c-0.0.9pl5

./configure --prefix=$PWD/../GPDIR \
     --with-paricfg=../GPDIR/lib/pari/pari.cfg \
     --with-paricfg.dbg=../GPDIR.dbg/lib/pari/pari.cfg
make check
make install
cd ..
GPDIR/bin/gp2c -v

git fetch
git rebase origin/master

git checkout master

git log