* Re: detecting when an option is not available
[not found] ` <mcrfwa1gk4c.fsf@dhcp-172-18-216-180.mtv.corp.google.com>
@ 2012-06-12 7:02 ` Andreas Schwab
2012-06-12 20:44 ` Ian Lance Taylor
0 siblings, 1 reply; 3+ messages in thread
From: Andreas Schwab @ 2012-06-12 7:02 UTC (permalink / raw)
To: gcc-help
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.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: detecting when an option is not available
2012-06-12 7:02 ` detecting when an option is not available Andreas Schwab
@ 2012-06-12 20:44 ` Ian Lance Taylor
0 siblings, 0 replies; 3+ messages in thread
From: Ian Lance Taylor @ 2012-06-12 20:44 UTC (permalink / raw)
To: Andreas Schwab; +Cc: gcc-help
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* detecting when an option is not available
@ 2012-06-12 5:49 Vincent Torri
0 siblings, 0 replies; 3+ messages in thread
From: Vincent Torri @ 2012-06-12 5:49 UTC (permalink / raw)
To: gcc-help
Hello,
I would like to know if there is a way to know if a warning option like
-Wno-initializer-overrides is supported or not by gcc. My purpose is to write
an m4 macro that checks if an option is supported or not by a compiler.
thank you
Vincent Torri
^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-06-12 7:02 ` detecting when an option is not available Andreas Schwab
2012-06-12 20:44 ` Ian Lance Taylor
2012-06-12 5:49 Vincent Torri
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