--march=duron doesn't work

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brianlane · Post by **brianlane** » Sat Oct 05, 2002 2:23 pm

I tried using the --march=duron example in make.conf, but gcc barfed on it. Changing it to i686 works fine, buy why doesn't duron work? This is with Gentoo v1.4 rc1

Brian

kirill · Post by **kirill** » Sat Oct 05, 2002 2:29 pm

brianlane wrote:I tried using the --march=duron example in make.conf, but gcc barfed on it. Changing it to i686 works fine, buy why doesn't duron work? This is with Gentoo v1.4 rc1

Why did you think it would work? Maby there is no such architecture as duron. And by the way you should use -march (one line).

For more about compiler flags in gentoo: CFLAGS Central and http://www.freehackers.org/gentoo/gccflags/.

El_Presidente_Pufferfish · Sat Oct 05, 2002 2:29 pm

duron = athlon-tbird
new duron(morgan core) = athlon-xp

toni · Post by **toni** » Sat Oct 05, 2002 4:00 pm

It pays to have a look at this page, especially if bootstraping a machine.
http://gcc.gnu.org/onlinedocs/gcc-3.2/gcc/

Pay particular attention to this section:
http://gcc.gnu.org/onlinedocs/gcc-3.2/g ... %20Options

On a scale of 1-10, this question recieves a -10.

killah · Post by **killah** » Sat Oct 05, 2002 5:23 pm

I'm also working but then with the athlon-mp flag and it gives me in the gcc part error like cannot execute 'as' no dir or file found.
Someone can give me hint what is missing or misconfigured.

+-Chaos- · Post by **+-Chaos-** » Sat Oct 05, 2002 7:17 pm

I tried Duron when I was building my base systen and this never worked so I just used athlon.

El_Presidente_Pufferfish · Sat Oct 05, 2002 7:44 pm

+-Chaos- wrote:I tried Duron when I was building my base systen and this never worked so I just used athlon.

Gah!
a duron IS an athlon with reduced cache!

same architecture!

twfox · Post by **twfox** » Tue Oct 15, 2002 3:00 pm

El_Presidente_Pufferfish wrote:duron = athlon-tbird
new duron(morgan core) = athlon-xp

I have a mobile duron (1 GHz) laptop. How would I know which of these to use? Should I just use athlon-tbird?

Thanks...

tove · Post by **tove** » Tue Oct 15, 2002 4:51 pm

Why did you think it would work?

My /etc/make.conf says:
# -march=<cpu-type> means to take full advantage of the ABI and instructions
# for the particular CPU; this will break compatibility with older CPUs (for
# example, -march=athlon-xp code will not run on a regular Athlon, and
# -march=i686 code will not run on a Pentium Classic.
#
# CPU types supported in gcc-3.2 and higher: athlon-xp, athlon-mp, athlon-4,
# athlon-tbird, athlon, duron, k6, k6-2, k6-3, i386, i486, i586 (Pentium), i686
# (Pentium Pro), pentium, pentium-mmx, pentiumpro, pentium2, pentium3, and
# pentium4. Note that Gentoo Linux 1.4 and higher include at least gcc-3.2.

Regards T.

rac · Post by **rac** » Tue Oct 15, 2002 8:10 pm

tove wrote:My /etc/make.conf [...]

...is wrong. Thanks for posting this. duron is not listed in the GCC manual, and athlon-xp, athlon-mp and athlon-4 are.

EDIT: this has already been filed as bug 7899.

--march=duron doesn't work

--march=duron doesn't work

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