Date: Wed, 20 Jul 2011 07:48:05 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: "Julian H. Stacey" <jhs@berklix.com>, hackers@freebsd.org, Dan Nelson <dnelson@allantgroup.com> Subject: Re: Freebsd-7.4 + std gcc 4.2.1 fails to honour -march=i586 Message-ID: <201107200748.05786.jhb@freebsd.org> In-Reply-To: <201107201133.p6KBXQTr006861@fire.js.berklix.net> References: <201107201133.p6KBXQTr006861@fire.js.berklix.net>
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On Wednesday, July 20, 2011 7:33:26 am Julian H. Stacey wrote: > What should FreeBSD do ? > Add a comment to man gcc ... that -march=i586 is not > enough, & feed the comment back to gcc project & see how > they want to handle it ? No, this is not a GCC bug. If you want to use a single build machine that will compile programs for other machines on a network to use, it must use the lowest common denominator for its CPUTYPE in /etc/make.conf. The out-of-the-box crt files from a FreeBSD install will work fine on a 486 and above, so can only get yourself into this quandry by building a new world with a CPUTYPE (or similar CFLAGS) setting in /etc/make.conf that violates this rule. You can fix your machine by fixing the CPUTYPE in your build machine and building and installing a new world (do use NO_CLEAN=yes for your build, do a full build). You will also want to rebuild any other binaries on this machine that you share with other machines. -- John Baldwin
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