https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99703

--- Comment #31 from Worx <worx at pouf dot org> ---
I use this Gentoo configuration :

CHOST="i586-pc-linux-gnu"
CFLAGS="-march=c3 -m3dnow -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"

Here you are a comment shared in the below link : 
Warning: Do not use any stages or packages containing i686 instructions (such
as cmov) with the Samuel 2 and Ezra versions of the C3.

The Ezra doesn't have any special instructions that you could optimize for,
just consider it a K6-3 - basically a Pentium 2 with 3DNow.

http://wikigentoo.ksiezyc.pl/Safe_Cflags.htm#C3_Nehemiah_.28C5X.2FC5XL.2FC5P.29_.28VIA.29

So, How can i run a make bootstrap with GCC source directly, How can i setup
this configuration ?

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