Script to build older gcc versions in containers

build_gcc.sh

#!/usr/bin/bash
# AUTHOR: Mika Hensel
# NEEDS: wget make gcc bzip2 diffutils
GCC_VERSION=$1

cd /tmp
wget https://ftp.gnu.org/pub/gnu/gcc/gcc-$GCC_VERSION/gcc-$GCC_VERSION.tar.gz

tar xzf gcc-$GCC_VERSION.tar.gz
cd gcc-$GCC_VERSION && rm -f /tmp/gcc-$GCC_VERSION.tar.gz

# FROM download_prerequisites
MPFR=mpfr-2.4.2
GMP=gmp-4.3.2
MPC=mpc-0.8.1

wget ftp://gcc.gnu.org/pub/gcc/infrastructure/$MPFR.tar.bz2 || exit 1
tar xjf $MPFR.tar.bz2 || exit 1
ln -sf $MPFR mpfr || exit 1

wget ftp://gcc.gnu.org/pub/gcc/infrastructure/$GMP.tar.bz2 || exit 1
tar xjf $GMP.tar.bz2  || exit 1
ln -sf $GMP gmp || exit 1

wget ftp://gcc.gnu.org/pub/gcc/infrastructure/$MPC.tar.gz || exit 1
tar xzf $MPC.tar.gz || exit 1
ln -sf $MPC mpc || exit 1

rm $MPFR.tar.bz2 $GMP.tar.bz2 $MPC.tar.gz || exit 1


cd /tmp && mkdir build && cd build

$PWD/../gcc-$GCC_VERSION/configure --prefix=$HOME/GCC-$GCC_VERSION --enable-languages=c,c++ --disable-multilib

sed -i 's/struct ucontext/ucontext_t/' /tmp/gcc-$GCC_VERSION/gcc/config/i386/linux-unwind.h

make -j 20 STAGE1_CFLAGS='-fgnu89-inline' > out.log 2>err.log
make install && rm -rf /tmp/build/ && rm -rf /tmp/gcc-$GCC_VERSION/

cp -rf ~/GCC-$GCC_VERSION/bin/* /usr/bin/

gcc --version
bash

# FIXES:
# https://unix.stackexchange.com/questions/219708/arch-compiling-toplev-o-fails-in-gcc-install#260190
# https://gcc.gnu.org/wiki/FAQ#gnu_stubs-32.h
# https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=883312dc79806f513275b72502231c751c14ff72