wget -O gcc.tar.gz 
tar -xf ./gcc.tar.gz
cd gcc
sed -i '/m64=/s/lib64/lib/' gcc/gcc/config/i386/t-linux64
sed -i 's/lib64/lib/'       gcc/gcc/config/i386/linux64.h
mkdir build
cd build
../configure --prefix=/usr --enable-languages=c,c++,d,fortran,go,objc,obj-c++
make
make install DESTDIR="$1"	
ln -s gcc "$1/usr/bin/cc"
install -Dm755 ../c99 "$1/usr/bin/c99"