Andreas Schwab <schwab@xxxxxxxxxxxxxx> writes: > Ian Lance Taylor <iant@xxxxxxxxxx> writes: > >> The trick to find out if a -Wno- option is supported is to force a >> compiler error. E.g., > > The trick to find out if a -Wno- option is supported is to check if the > positive form is accepted. See ACX_PROG_CC_WARNING_OPTS. That does seems simpler. Thanks. Ian