default_pre_build &&
cd $SOURCE_DIRECTORY &&
sed -i -e "s:^prefix.*:prefix = $INSTALL_ROOT/usr:" Makefile &&
sed -i -e "s:^mandir.*:mandir = \$(prefix)/share/man/man1:" Makefile &&
sed -i -e "s:^CFLAGS.*:CFLAGS = $CFLAGS:" Makefile
