Any flags i missed to add in u-boot env?

Bye~~

Directories should have been:
gcc–4.6.0/
gcc–4.6.0/gmp/
gcc–4.6.0/mpfr/
gcc–4.6.0/mpc/

You need to compile with option ABI=32 and put the GMP, MPFR and MPC sources inside the GCC source folder.
Eg…
gcc–4.6.0/
gmp/
mpfr/
mpc/

..I do it this way:

download and extract gcc–4.6.0
mv gcc–4.6.0 gcc
download and extract gmp–5.0.1
mv gmp–5.0.1 gcc/gmp
download and extract mpfr–3.0.0 (maybe 3.0.1)
mv mpfr–3.0.1 gcc/mpfr
download and extract mpc–0.8.2 (maybe 0.9)
mv mpc–0.8.2 gcc/mpc

set a variable…
LIBDIR=$(pwd)/libs
compile gmp, mpfr and mpc, optionally with ––prefix=$LIBDIR
compile gcc
You *will* be able to specify custom locations using ––prefix=$LIBDIR and ––with–*=$LIBDIR

With this information, you *should* be able to do a successful build of a microcontroller–toolchain.
(note, I’ve tried changing the minus to a long dash, hoping that it’ll show up a bit better than the minus)

Well, the libraries build. No matter whether I install them or compile them to a different directory, I get the following result:

checking for the correct version of gmp.h… yes
checking for the correct version of mpfr.h… yes
checking for the correct version of mpc.h… yes
checking for the correct version of the gmp/mpfr/mpc libraries… no
configure: error: Building GCC requires GMP 4.2+, MPFR 2.3.1+ and MPC 0.8.0+.
Try the –with-gmp, –with-mpfr and/or –with-mpc options to specify
their locations. Source code for these libraries can be found at
their respective hosting sites as well as at
ftp://gcc.gnu.org/pub/gcc/infrastructure/. See also
http://gcc.gnu.org/install/prerequisites.html for additional info. If
you obtained GMP, MPFR and/or MPC from a vendor distribution package,
make sure that you have installed both the libraries and the header
files. They may be located in separate packages.

(This result, I got from following the tutorial on this page; you’ve gotten it to work with these versions, so I must be able to too).
I’m using a PowerMac G5/DP 2.0 with Mac OS X Leopard 10.5.8 and XCode 3.14. I switched to GCC 4.2.
As gcc_select is no longer supplied, I have 3 scripts placed in /usr/bin, similar to the following:

#!/bin/sh
# file:use_gcc-4.2
sudo rm cc gcc c++ g++ gcov
sudo ln -s gcc-4.2 cc
sudo ln -s gcc-4.2 gcc
sudo ln -s c++-4.2 c++
sudo ln -s g++-4.2 g++
sudo ln -s gcov-4.2 gcov

I hope my message here will help some people getting their AVR/AVR32/ARM toolchains to compile, but I’m really stuck here.
(If you can’t get past this level, I can tell you that GCC 4.2.3 compiles fine; it doesn’t need GMP/MPFR/MPC)

if (!-e $request_filename) {
rewrite ^/images/(.*)$ /images/$1 break;
rewrite ^/templates/(.*)$ /templates/$1 break;
rewrite ^/3rdparty/plugins/freemind/(.*)$ /3rdparty/plugins/freemind/$1 break;
rewrite ^/3rdparty/plugins/wikkaedit/(.*)$ /3rdparty/plugins/wikkaedit/$1 break;
rewrite ^/(.*)$ /wikka.php?wakka=$1 break;
break;
}

if ($request_filename !~* wikka.php) {
rewrite ^(.*)$ wikka.php?wakka=$1 break;
break;
}

Bye !
Javi

‘–’ should be replaced by two minus signs. ‘–’.