Re: [gentoo-user] CFLAGS ...-O3 -pipe vs ...O2 no pipe

2007-04-09 Thread Neil Bothwick
Hello Andrey Gerasimenko, Ideally you should measure compile times for large projects like Open Office and find out what works best on your system. I would start with 1 thread -O2 and -pipe. That would be an incredible waste of time because the OOo build replaces any -O? CFLAG with -O2. If

[gentoo-user] CFLAGS ...-O3 -pipe vs ...O2 no pipe

2007-04-08 Thread maxim wexler
Hi group, I note two schools of thought on the best CFLAGS for the Pentium III processor. One suggests using -O3 -pipe, the other, -O2 without the pipe. How much difference does this make? Is the extra level of optimization with pipe the equivalent of the lower level without? -mw

Re: [gentoo-user] CFLAGS ...-O3 -pipe vs ...O2 no pipe

2007-04-08 Thread Sascha Hlusiak
One suggests using -O3 -pipe, the other, -O2 without the pipe. How much difference does this make? Is the extra level of optimization with pipe the equivalent of the lower level without? From the gcc manpage: -pipe Use pipes rather than temporary files for communication between the various

Re: [gentoo-user] CFLAGS ...-O3 -pipe vs ...O2 no pipe

2007-04-08 Thread Andrey Gerasimenko
On Mon, 09 Apr 2007 05:48:07 +0400, maxim wexler [EMAIL PROTECTED] wrote: Hi group, I note two schools of thought on the best CFLAGS for the Pentium III processor. One suggests using -O3 -pipe, the other, -O2 without the pipe. How much difference does this make? Is the extra level of