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Re: detecting when an option is not available
- From: Ian Lance Taylor <iant at google dot com>
- To: Andreas Schwab <schwab at linux-m68k dot org>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Tue, 12 Jun 2012 13:43:51 -0700
- Subject: Re: detecting when an option is not available
- References: <Pine.LNX.4.64.1206120015560.16674@grozny.maths.univ-evry.fr> <mcrfwa1gk4c.fsf@dhcp-172-18-216-180.mtv.corp.google.com> <m2txyhf1x6.fsf@igel.home>
Andreas Schwab <schwab@linux-m68k.org> writes:
> Ian Lance Taylor <iant@google.com> 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