if int(gcc[0]) >= 8:
# I tried and failed to ignore these with _Pragma
conf.env.append_value('CXXFLAGS', ['-Wno-cast-function-type'])
- elif int(gcc[0]) >= 5 and int(gcc[0]) <= 8
+ elif int(gcc[0]) >= 5 and int(gcc[0]) <= 8:
# There appears to be a GCC bug which lingered from major versions 5--8 and which
# flags up these warnings all over the place in boost::optional.
# This seems to be the only practical way to hide it.