Ensure that ${DERIVED_FILE_DIR} is created before writing out xhyve-version.h

This was causing issues with builds in MacPorts.

Fixes https://trac.macports.org/ticket/57674

Signed-off-by: Jeremy Huddleston Sequoia <[email protected]>

Author: jeremyhu

xcscripts/version.sh

@@ -8,4 +8,5 @@ else
     VERSION="v${CURRENT_PROJECT_VERSION}"
 fi
 
+mkdir -p "${DERIVED_FILE_DIR}"
 echo "#define VERSION \"${VERSION}\"" > "${DERIVED_FILE_DIR}/xhyve-version.h"