git clone https://gcc.gnu.org/git/gcc.git
cd gcc
# download prerequisites
cd gcc
./contrib/download_prerequisites
# create build directory
cd ..
mkdir gcc-build
cd gcc-build
# build
../gcc/configure \ --prefix=${INSTALLDIR} \ --enable-shared \ --enable-threads=posix \ --enable-__cxa_atexit \ --enable-clocale=gnu \ --enable-languages=all \ --enable-multilib
make
make install

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