Date: Tue, 23 Jun 2015 01:45:45 +1000 From: andrew clarke <mail@ozzmosis.com> To: "William A. Mahaffey III" <wam@hiwaay.net> Cc: FreeBSD Questions !!!! <freebsd-questions@freebsd.org> Subject: Re: GCC question Message-ID: <20150622154545.GA92373@ozzmosis.com> In-Reply-To: <558585CB.4070607@hiwaay.net> References: <558585CB.4070607@hiwaay.net>
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On Sat 2015-06-20 10:31:14 UTC-0453, William A. Mahaffey III (wam@hiwaay.net) wrote: > I have gcc 4.8 installed on this system. I notice a slight newer version > available, specifically referencing AMD64, which this box is: > > [root@kabini1, /etc, 10:15:12am] 630 % uname -a > FreeBSD kabini1.local 9.3-RELEASE-p13 FreeBSD 9.3-RELEASE-p13 #0: Tue > Apr 7 03:01:12 UTC 2015 > root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 > [root@kabini1, /etc, 10:15:15am] 631 % grep -i gcc LIST.installed.txt > gcc-4.8.4_3 GNU Compiler Collection 4.8 > gcc-ecj-4.5 Eclipse Java Compiler used to build GCC Java > [root@kabini1, /etc, 10:19:39am] 632 % grep -i gcc LIST.available.txt > amd64-gcc-4.9.2_1 > amd64-xtoolchain-gcc-0.1 I suspect these are for cross-compiling to amd64 from non-amd64 hosts. > I only use ports for the flash library, however I am wondering if there > might be any performance improvement in recompiling some stuff locally, > possibly with a compiler tuned/optimized for AMD64. The regular gcc in base is already tuned to amd64. You could use clang instead of gcc. It is the default C/C++ compiler in FreeBSD 10. Performance benefits are likely to be marginal, though.
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