Correct CPUTYPE= for Intel Celeron 2.50GHz (2500.10-MHz 686-class CPU)
Hello, can someone tell what the right choice for CPUTYPE in /etc/make.conf is for that CPU? And, is it safe to build kernel and world with --march= too? Thanks, Frank ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Correct CPUTYPE= for Intel Celeron 2.50GHz (2500.10-MHz 686-class CPU)
On Friday 09 June 2006 09:20, Frank Steinborn wrote: can someone tell what the right choice for CPUTYPE in /etc/make.conf is for that CPU? You probably want: CPUTYPE?=pentium4 See /usr/share/examples/etc/make.conf for a full list. And, is it safe to build kernel and world with --march= too? It should be safe to build world and kernel with CPUTYPE specified in make.conf, but additional compile flags are typically not guaranteed to work. JN ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Correct CPUTYPE= for Intel Celeron 2.50GHz (2500.10-MHz 686-class CPU)
John Nielsen wrote: You probably want: CPUTYPE?=pentium4 If I put a ? after CPUTYPE, buildworld won't use CPUTYPE, correct? Is it better to do so, or is it safe to use CPUTYPE=pentium4? Thanks, Frank ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Correct CPUTYPE= for Intel Celeron 2.50GHz (2500.10-MHz 686-class CPU)
On Friday 09 June 2006 11:48, Frank Steinborn wrote: John Nielsen wrote: You probably want: CPUTYPE?=pentium4 If I put a ? after CPUTYPE, buildworld won't use CPUTYPE, correct? Is it better to do so, or is it safe to use CPUTYPE=pentium4? Incorrect. The ? means that if the CPUTYPE is already set (say, from the command line), it won't get clobbered by the entry in make.conf. So it's good practice to always use ?. It will get picked up by buildworld either way. JN ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Correct CPUTYPE= for Intel Celeron 2.50GHz (2500.10-MHz 686-class CPU)
On 6/9/06, Frank Steinborn [EMAIL PROTECTED] wrote: Hello, can someone tell what the right choice for CPUTYPE in /etc/make.conf is for that CPU? CPUTYPE?=pentium2 CFLAGS+= -mtune=prescott COPTFLAGS+= -mtune=prescott I find that this produces faster, and safer, code then -march=pentium4, etc. alone. you can view all the gcc flags here: http://gcc.gnu.org/onlinedocs/gcc-3.4.6/gcc/i386-and-x86_002d64-Options.html And, is it safe to build kernel and world with --march= too? With the gcc options I gave to you above yes. -- BSD Podcasts @: http://bsdtalk.blogspot.com/ http://freebsdforall.blogspot.com/ ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Correct CPUTYPE= for Intel Celeron 2.50GHz (2500.10-MHz 686-class CPU)
On 6/9/06, Frank Steinborn [EMAIL PROTECTED] wrote: Hello, can someone tell what the right choice for CPUTYPE in /etc/make.conf is for that CPU? CPUTYPE?=pentium2 CFLAGS+= -mtune=prescott COPTFLAGS+= -mtune=prescott I find that this produces faster, and safer, code then -march=pentium4, etc. alone. you can view all the gcc flags here: http://gcc.gnu.org/onlinedocs/gcc-3.4.6/gcc/i386-and-x86_002d64-Options.html And, is it safe to build kernel and world with --march= too? With the gcc options I gave to you above yes. -- BSD Podcasts @: http://bsdtalk.blogspot.com/ http://freebsdforall.blogspot.com/ ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]