This is the mail archive of the gcc-help@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: defaults for -march and -mtune

From: Marcin MirosÅaw <marcin at mejor dot pl>
To: gcc-help at gcc dot gnu dot org
Date: Thu, 24 Nov 2011 13:31:26 +0100
Subject: Re: defaults for -march and -mtune
References: <CANd1uZnCRQPe07ydP6MgmGZo5kZX169QbZSeo4fttHQ88mbhDw@mail.gmail.com>

W dniu 24.11.2011 11:37, Jay Foad pisze:

If I don't specify any -march= or -mtune= options, what are the
default architectures to generate code for and to tune for? Can I get
the compiler to tell me this information?
The documentation here doesn't seem to say anything about it:

http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86_002d64-Options.html

I'm using "gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1" targetting x86_64.


Hello!
Try: gcc -Q --help=target 2>&1|grep  "march\|mtune"
Regards

References:
- defaults for -march and -mtune
  - From: Jay Foad

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]