default_pre_build      &&
cd ${SOURCE_DIRECTORY} &&
patch -p1 < $SPELL_DIRECTORY/0001-clean-up-the-Makefile.patch &&
patch -p1 < $SPELL_DIRECTORY/0002-make-the-code-compile-with-higher-warning-levels.patch &&
patch -p1 < $SPELL_DIRECTORY/0003-switch-build-system-to-cmake.patch