mkdir -p -m 0700 src
cd src
find -type d -maxdepth 1 -name "rcs-*" -exec rm -r {} \;
tar xzvf ~/rcs-5.7.tar.gz
cd rcs-5.7
# Patch it to shut up something in conf.sh (which is run by make)
wget http://englanders.cc/pub/linux/patches/rcs-5.7.patch &&
patch -p0 < ./rcs-5.7.patch && rm rcs-5.7.patch
./configure --prefix=/usr
make
# Become root to install it
su
removepkg rcs
make install