#!/bin/bash
set -e

ln -s gthr-posix.h libgcc/gthr-default.h &&
mkdir build
cd build || exit 1
../libstdc++-v3/configure \
    CXXFLAGS="-g -O2 -D_GNU_SOURCE" \
    --prefix=/usr \
    --disable-multilib \
    --disable-nls \
    --host="$(uname -m)"-lfs-linux-gnu \
    --disable-libstdcxx-pch &&
make &&
make -j1 install