--- /dev/null
+#! /bin/sh
+
+set -ex
+BISON_PKGDATADIR=$HOME/src/bison/data
+export BISON_PKGDATADIR
+
+flex -ocalc++-scanner.cc calc++-scanner.ll
+bison -o calc++-parser.cc calc++-parser.yy
+g++ -o calc++ calc++.cc calc++-driver.cc calc++-parser.cc calc++-scanner.cc