getting lots of illegal instruction errors in glibc compile

[compucoder]

Hi, I am trying to install gentoo on my P166 MMX - it is a 5166 compaq deskpro 2000 - 128 MB Ram - Pentium 166MMX chip

After about 6 hours of compiling :/ I get an error saying illegal instruction - this is happening in glibc compile.

I originally used -march=pentium-mmx , now this time I tried -march=i586...still get the error? I am now attempting it again using -mcpu=i586. I am also using -O2 -pipe

i am a bit puzzled why i am getting instruction errors in glibc - it "is" a generation 5 chip with MMX

does anyone know if I am using the wrong settings for this system?
Gonna be another 6 hours before I know if -mcpu=i586 works or not.

thanx

[ebrostig]

I think I would use i386 and pentium-mmx.

I'm not sure if this cpu can handle some of the instructions generated with i586.

-march=pentium-mmx -mcpu=i386

(Just a quick additional Q: Have you overclocked it? If so, try to set it back to standard before compiling)

Erik
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[compucoder]

i guess its possible the compaq version of the CPU or the fact its a P166 might make the instruction set different.

The -O3 creates a bigger distro - Unrolls loops, and other performance additions over O2 - i chose O2 due to my small hard drive

I will see if i586 works , if not then I will try your suggestions

thanx