Re: [gentoo-user] i486
On 11/22/2010 01:02 PM, James wrote:
> Hello,
>
> I want to set up a AMD AthlonXP on Compact
> Flash, just like I do my old pentium & i586 systems.
> I'd really like to be able to move 4G Cf cards
> (set up generically) between old pentium,
> k6, i586, p4 and AthlonXP systems. (that's the goal
> not performance, optimized for small binaries).
>
> OK, so I'm using ext2 on a 4 G CF.
>
> I want a universal /etc/make.conf file
> that will work on old hardware all the way
> up to a p4 (32bit) system, and on AMD
> (AMD Athlon(TM) XP 2400+)
>
> So take and look and tell me what I should
> change and why. OK?
>
>
> MARCH =???
>
> CHOST="i486-pc-linux-gnu"
> CFLAGS="-Os -march=??? -pipe -fomit-frame-pointer"
> CXXFLAGS="${CFLAGS}"
> PORTAGE_NICENESS="1"
>
> MAKEOPTS="-j2"
> USE="-* -nls mmx ncurses ssl crypt berkdb tcpd pam perl pcre \
> python readline zlib bzip2 nptl nptlonly syslog"
>
> Any suggestions on flags are most welcome!
> Ideas are most welcome!
>
>
> James
>
>
If this is one drive to run on all of them, -march=pentium -mmmx (if all
of your CPUs have mmx) will probably work. If the oldest stuff you've
got is p4, athlon-xp era, you might be able to get a bit newer... but
you'd need to compare the literal flags turned on by something like
-march=pentium3 and -march=athlon-xp (you can't use pentium4 because it
includes SSE2 which Athlon XP doesn't necessarily support).
You can check what flags gcc picks with:
echo | gcc -dM -E - -march=$MARCH
It's not super straightforward to look at, but it's the only way my
googling has found to actually show all of the flags turned on by an
-march or -mtune option.
-Andy
Re: [gentoo-user] i486
On Monday 22 November 2010, James wrote:
> Hello,
>
> I want to set up a AMD AthlonXP on Compact
> Flash, just like I do my old pentium & i586 systems.
> I'd really like to be able to move 4G Cf cards
> (set up generically) between old pentium,
> k6, i586, p4 and AthlonXP systems. (that's the goal
> not performance, optimized for small binaries).
>
> OK, so I'm using ext2 on a 4 G CF.
>
> I want a universal /etc/make.conf file
> that will work on old hardware all the way
> up to a p4 (32bit) system, and on AMD
> (AMD Athlon(TM) XP 2400+)
>
> So take and look and tell me what I should
> change and why. OK?
>
>
> MARCH =???
>
> CHOST="i486-pc-linux-gnu"
make that i586
> CFLAGS="-Os -march=??? -pipe -fomit-frame-pointer"
> CXXFLAGS="${CFLAGS}"
> PORTAGE_NICENESS="1"
>
> MAKEOPTS="-j2"
> USE="-* -nls mmx ncurses ssl crypt berkdb tcpd pam perl pcre \
> python readline zlib bzip2 nptl nptlonly syslog"
>
> Any suggestions on flags are most welcome!
> Ideas are most welcome!
yeah. Pentium4 is such a stupid architecture that anything that runs well on
it runs badly on everything else and vice versa.
Considering that P4 are also among the worst cpus when it comes to energy
consumption, why do you waste your time with that crap?
[gentoo-user] i486
Hello,
I want to set up a AMD AthlonXP on Compact
Flash, just like I do my old pentium & i586 systems.
I'd really like to be able to move 4G Cf cards
(set up generically) between old pentium,
k6, i586, p4 and AthlonXP systems. (that's the goal
not performance, optimized for small binaries).
OK, so I'm using ext2 on a 4 G CF.
I want a universal /etc/make.conf file
that will work on old hardware all the way
up to a p4 (32bit) system, and on AMD
(AMD Athlon(TM) XP 2400+)
So take and look and tell me what I should
change and why. OK?
MARCH =???
CHOST="i486-pc-linux-gnu"
CFLAGS="-Os -march=??? -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
PORTAGE_NICENESS="1"
MAKEOPTS="-j2"
USE="-* -nls mmx ncurses ssl crypt berkdb tcpd pam perl pcre \
python readline zlib bzip2 nptl nptlonly syslog"
Any suggestions on flags are most welcome!
Ideas are most welcome!
James
