Date: Wed, 20 Jun 2012 01:12:00 -0500 From: Adam Vande More <amvandemore@gmail.com> To: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> Cc: Michel Talon <talon@lpthe.jussieu.fr>, freebsd-questions@freebsd.org Subject: Re: CLANG vs GCC tests of fortran/f2c program Message-ID: <CA%2BtpaK0XUEBpT7SiwsY=%2BwEPgOd=TAh=Eh7fwim1Odq1jUqZag@mail.gmail.com> In-Reply-To: <alpine.BSF.2.00.1206200716330.71176@wojtek.tensor.gdynia.pl> References: <402199FE-380B-41B6-866B-7D5D66C457D5@lpthe.jussieu.fr> <alpine.BSF.2.00.1206191952250.8234@wojtek.tensor.gdynia.pl> <854D02B1-CA89-4F5E-8773-DB05F2868D74@lpthe.jussieu.fr> <alpine.BSF.2.00.1206200618290.46371@wojtek.tensor.gdynia.pl> <CA%2BtpaK2ONz2wD7Zb4Hi9W6kk7RR8_VZR8YJTj9jAEj_b4_sDaQ@mail.gmail.com> <alpine.BSF.2.00.1206200716330.71176@wojtek.tensor.gdynia.pl>
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On Wed, Jun 20, 2012 at 12:18 AM, Wojciech Puchar < wojtek@wojtek.tensor.gdynia.pl> wrote: > Yes, Clang in general produces slower binaries than gcc. Is that in >> dispute or something? Or is this just repetition in case we >> didn't hear you the first time? >> > > just yesterday i've heard lots of otherwise claim. > > > >> Try thinking of the transition as a step back to take many steps forward. >> > > What exactly step forward it means? > These are a few: http://clang.llvm.org/comparison.html#gcc And the performance overall in clang is gaining more rapidly than gcc. At it's present rate, it won't be long until your are complaining for clang to be the default if that is your primary objection. Other factors have pushed this change into motion sooner than perhaps desirable for some. However, it is inevitable given the licensing barriers and the project's long term goals. Eliminating, or at least not being dependent on a GNU toolchain. GPL v3 brings with it a whole host problems such as: http://www.tech-faq.com/linux-licensing-in-conflict-with-secure-boot-support.html Those licensing issues may not be an issue for you, but they are for many of the targets FreeBSD wishes to serve so keeping the base system as unpolluted as possible is important. -- Adam Vande More
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