Re: Problem installing packages

[Sergei Steshenko]

----- Original Message -----
> From: notMyUsername <address@hidden>
> To: address@hidden
> Cc: 
> Sent: Tuesday, May 22, 2012 2:28 AM
> Subject: Re: Problem installing packages
> 
>> Strictly speaking, AFAIR, putting hard-coded '-march=native' is a 
> bug -
> because it applies only to x86 and >x86_64 architectures. 
>> 
>> Another issue is that llvm-g++-4.2doesn't understand it even though you 
> are
> apparently using an x86 or >x86_64 machine. 
> 
> Yes. core i7 quad.
> 
> I don't know enough about how Homebrew works (or how Octave keeps track of
> what flags it uses to build packages) but on the Lion machine (core i7):
> 
> $ brew --env
> CC: /usr/bin/clang
> CXX: /usr/bin/clang++ => /usr/bin/clang
> LD: /usr/bin/clang
> CFLAGS: -Os -w -pipe -march=native -Qunused-arguments
> CXXFLAGS: -Os -w -pipe -march=native -Qunused-arguments
> MAKEFLAGS: -j8
> 
> So it looks kind-of like a catch 22 the way ut currently is - if I set CXX
> to g++ it will compile the package but won't accept the flags, but if I
> leave it alone the flags are OK but it generates errors on the package code.
> 
> So since none of these variables are set outside of Homebrew  I presume that
> what I need to do is get Homebrew to use different CXX and CSSFLAGS when it
> builds Octave in the first place?  Is that where Octave is getting those
> from?  Or is there somewhere in Octave (after it's built) that I can get at
> those and set then appropriately? 
> 
> Thanks!
> 

Sorry, I neither own no run a Mac, so I don't know about Homrbrew.

I thought the setting was coming from the package.

...

If that 'brew' thing is open source, you can still find the place where 
'-march=native' is set.

Regards,
  Sergei.