export CFLAGS="-march=i486 -mtune=i686 -Os -pipe"
export CXXFLAGS="-march=i486 -mtune=i686 -Os -pipe"


GCC-4.4.3
---------
sed -i 's/install_to_$(INSTALL_DEST) //' libiberty/Makefile.in
sed -i 's/^XCFLAGS =$/& -fomit-frame-pointer/' gcc/Makefile.in
sed -i 's@\./fixinc\.sh@-c true@' gcc/Makefile.in
sed -i 's/@have_mktemp_command@/yes/' gcc/gccbug.in

mkdir ../gcc-build
cd ../gcc-build

../gcc-4.4.3/configure --prefix=/usr --enable-languages=c,c++ --disable-bootstrap

[clfs]
 ../gcc-4.4.3/configure --prefix=/usr --enable-languages=c,c++ --disable-bootstrap --libexecdir=/usr/lib --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-c99 --enable-long-long --enable-clocale=gnu --disable-libstdcxx-pch

time make
real    18m 26.93s

sudo make install

cd /usr/local/bin
sudo ln -s gcc cc

cd /usr/local/lib
sudo ln -s sudo ln -s ../bin/cpp cpp