--- /dev/null
+#! /bin/sh -e
+
+case $# in
+ 0) echo 2>&1 "usage: ${0##*/} ENV [CMD [ARGS ...]]"; exit 2 ;;
+esac
+env=$1; shift
+case $# in
+ 0) set -- "$SHELL" ;;
+esac
+
+: ${CROSSDIR=@crossdir@}; export CROSSDIR
+
+if ! [ -f "$CROSSDIR/etc/$env-setup.sh" ]; then
+ echo 2>&1 "${0##*/}: cross environment \`$env' unknown"; exit 2
+fi
+
+p=$PATH CROSS_COMPILER_PREFIX=""
+while :; do
+ case $p in
+ "") break ;;
+ *:*) d=${p%%:*} p=${p#*:} ;;
+ *) d=$p p="" ;;
+ esac
+ if [ -e "$d/ccache" ]; then CROSS_COMPILER_PREFIX="ccache "; break; fi
+done
+export CROSS_COMPILER_PREFIX
+
+MDW_BUILDENV=$env; export MDW_BUILDENV
+
+if [ -f "$CROSSDIR/etc/$env-config.site" ]
+then CONFIG_SITE=$CROSSDIR/etc/$env-config.site
+else CONFIG_SITE=$CROSSDIR/etc/common-cross-config.site
+fi
+export CONFIG_SITE
+
+CROSS_PREFIX=$CROSSDIR/inst.$env; export CROSS_PREFIX
+. "$CROSSDIR/etc/$env-setup.sh"
+
+case ${CROSS_ARCH+t} in
+ t) ;;
+ *) echo 2>&1 "${0##*/}: setup script didn't set \`CROSS_ARCH'"; exit 2 ;;
+esac
+export CROSS_ARCH
+
+case :$PATH: in
+ *:"$CROSSDIR/tools:"*) ;;
+ *) PATH=$CROSSDIR/tools:$PATH ;;
+esac
+
+exec "$@"