Re: [Boost-build] Choice of optimization flags for GCC

Subject: Re: [Boost-build] Choice of optimization flags for GCC
From: Brad Howes (howes_at_[hidden])
Date: 2008-09-09 12:33:00

On Sep 9, 2008, at 11:45 AM, David Abrahams wrote:

> Yes, but then we have another problem: the gcc documentation says that
> you should only use one -Ox option on the command-line, and we have no
> way to avoid producing command lines containing one of the values -O0
> -O3 or -Os.

 From http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Optimize-Options.html#Optimize-Options

     If you use multiple -O options, with or without level numbers,  
the last such option is the one that is effective.

I assume it works since I rely on that to keep my release builds at -O2.

Brad

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Brad Howes
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