load gmp, mpfr, ppl, cloog, texinfo  extensions

export CFLAGS="-g -O2 -march=i486 -mtune=i686"
export CXXFLAGS="-g -O2 -march=i486 -mtune=i686"

gcc-4.4.0
---------
patch -Np1 -i ../gcc-4.4.0-branch_update-6.patch

sed -i 's/install_to_$(INSTALL_DEST) //' libiberty/Makefile.in

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

CC="/usr/bin/gcc -Wl,-rpath-link,/lib -isystem /usr/include" CXX="/usr/bin/g++ -Wl,-rpath-link,/lib -isystem /usr/include" ../gcc-4.4.0/configure --prefix=/usr/local --libexecdir=/usr/local/lib --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-c99 --enable-long-long --enable-clocale=gnu --enable-languages=c,c++ --disable-multilib --disable-libstdcxx-pch

make tooldir=/usr/local

sudo make tooldir=/usr/local install

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