repo/gcc/build

wget -O gcc-11.1.0.tar.gz https://gcc.gnu.org/pub/gcc/releases/gcc-11.1.0/gcc-11.1.0.tar.xz 
tar -xf gcc-11.1.0.tar.gz
cd gcc-11.1.0
wget https://ftp.gnu.org/gnu/gmp/gmp-6.2.1.tar.xz
wget https://ftp.gnu.org/gnu/mpfr/mpfr-4.1.0.tar.xz
wget https://ftp.gnu.org/gnu/mpc/mpc-1.2.1.tar.gz
tar -xf gmp-6.2.1.tar.xz
tar -xf mpfr-4.1.0.tar.xz
tar -xf mpc-1.2.1.tar.gz
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 -j`nproc`
make install DESTDIR="$1"	
ln -s gcc "$1/usr/bin/cc"
echo "#!/bin/sh" > "$1"/usr/bin/c99
echo "exec cc -std=c99 "$@"" >> "$1"/usr/bin/c99
chmod +x "$1"/usr/bin/c99