-ensure_dirs $INSTALL_ROOT $INSTALL_ROOT/bin $INSTALL_ROOT/lib \
- $INSTALL_ROOT/man $INSTALL_ROOT/man/man1 \
- $SBCL_HOME $SBCL_HOME/systems $SBCL_HOME/site-systems
+ensure_dirs $BUILD_ROOT$INSTALL_ROOT $BUILD_ROOT$INSTALL_ROOT/bin \
+ $BUILD_ROOT$INSTALL_ROOT/lib \
+ $BUILD_ROOT$INSTALL_ROOT/man $BUILD_ROOT$INSTALL_ROOT/man/man1 \
+ $BUILD_ROOT$SBCL_HOME $BUILD_ROOT$SBCL_HOME/systems \
+ $BUILD_ROOT$SBCL_HOME/site-systems