linux-from-scratch/gcc-pass1-cmds.sh

#!/bin/bash
set +h
source "$basedir/build-helpers.sh"

# In case some commands aren't available on host OS,
# build and install along with GCC.
add_dependency() {
    local pkgname="$1"
    local pkgversion="$2"
    local ext="$3"
    pkgsrc="$basedir"/"$pkgname"-"$pkgversion"."$ext"
    [[ -e "$pkgsrc" ]] || {
        >&2 echo $pkgsrc not found.
        exit 1
    }
    tar xvf "$pkgsrc" && mv -v "$pkgname"-"$pkgversion" "$pkgname"
}
dependencies_commands() {
    cd "$srcdir"
    for p in \
        "mpfr 3.1.3 tar.xz" \
        "mpc  1.0.3 tar.gz"; do
        add_dependency $p &
    done
    local pkgname="gmp"
    local pkgversion="6.0.0"
    local ext="tar.xz"
    pkgsrc="$basedir"/"$pkgname"-"$pkgversion"a."$ext"
    [[ -e "$pkgsrc" ]] || {
        >&2 echo $pkgsrc not found.
        exit 1
    }
    tar xvf "$pkgsrc" && mv -v "$pkgname"-"$pkgversion" "$pkgname"
    wait
}

fixup_commands() {
    cd "$srcdir"
    for f in \
        $(find gcc/config -name linux64.h -o -name linux.h -o -name sysv4.h)
    do
        cp -uv "$f"{,.orig}
        sed -e 's|/lib\(64\)\?\(32\)\?/ld|/tools&|g'    \
            -e 's|/usr|/tools|g'                        \
            "$f".orig > "$f"
        cat >> "$f" << EOF

#undef STANDARD_STARTFILE_PREFIX_1
#undef STANDARD_STARTFILE_PREFIX_2
#define STANDARD_STARTFILE_PREFIX_1 "/tools/lib/"
#define STANDARD_STARTFILE_PREFIX_2 ""
EOF
        touch "$f".orig
    done
}

configure_commands() {
    cd "$builddir"
    "$srcdir"/configure                                 \
        --target=$LFS_TGT                               \
        --prefix=/tools                                 \
        --with-glibc-version=2.11                       \
        --with-sysroot=$LFS                             \
        --with-newlib                                   \
        --without-headers                               \
        --with-local-prefix=/tools                      \
        --with-native-system-header-dir=/tools/include  \
        --disable-nls                                   \
        --disable-shared                                \
        --disable-multilib                              \
        --disable-decimal-float                         \
        --disable-threads                               \
        --disable-libatomic                             \
        --disable-libgomp                               \
        --disable-libquadmath                           \
        --disable-libssp                                \
        --disable-libvtv                                \
        --disable-libstdcxx                             \
        --enable-languages=c,c++
}