default_pre_build      &&
cd "$SOURCE_DIRECTORY" &&

rm -rf glew &&
patch -p1 < "$SPELL_DIRECTORY/opencsg-1.4.2-includepath.patch"  &&
patch -p1 < "$SPELL_DIRECTORY/0001-do-not-build-examples.patch" &&
patch -p1 < "$SPELL_DIRECTORY/0001-install-to-usr.patch"

