Date: Thu, 14 Apr 2011 06:32:35 +0000 From: "b. f." <bf1783@googlemail.com> To: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de> Cc: brooks@freebsd.org, freebsd-ports@freebsd.org Subject: Re: Does USE_GCC= 4.5+ also set C++ and Fortran to g++45/46 and gfortran45/46? Message-ID: <BANLkTi=dPcgF5YAvEi3p_b=tECWA-MSMCw@mail.gmail.com> In-Reply-To: <4DA68D86.3000102@mail.zedat.fu-berlin.de> References: <BANLkTimPw=7_3bmtXzPKoyJ2w7ihaszLaQ@mail.gmail.com> <4DA68D86.3000102@mail.zedat.fu-berlin.de>
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On 4/14/11, O. Hartmann <ohartman@mail.zedat.fu-berlin.de> wrote: > On 04/13/11 20:59, b. f. wrote: > I looked into ports/Mk/bsd.gcc.mk and found that only gcc45 is set in > case of using USE_FORTRAN, not gcc46. It would be nice also having gcc46 > set, since we try to optimise for AVX in the new Intel Sandy-Bridge CPUs > and gcc46 is supoorting new facilities like that. I think that the gcc maintainer will probably switch the default Fortran compiler to gcc46 after gcc46 has been tested a bit longer, and some of the remaining bugs fixed. You could of course switch the default on your own machines. AVX support requires more than just a new compiler and the proper hardware: at the moment, FreeBSD doesn't support AVX, although some outside developers expressed an interest in adding support for it: http://lists.freebsd.org/pipermail/freebsd-arch/2011-March/011167.html but this will probably take some time. b.
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