#!/bin/bash
# ============================================================================
# DarkForge Linux — Phase 0, Chapter 6: Diffutils
# ============================================================================
# Purpose:  Cross-compile GNU diffutils (diff, cmp, sdiff, diff3).
# Inputs:   ${LFS}/sources/diffutils-3.12.tar.xz
# Outputs:  diff utilities in ${LFS}/usr/bin/
# Ref:      LFS 13.0 §6.6
# ============================================================================

set -euo pipefail
source "${LFS}/sources/darkforge-env.sh"

PACKAGE="diffutils"
VERSION="3.12"
SRCDIR="${LFS}/sources"

echo "=== Building ${PACKAGE}-${VERSION} (Temporary Tool) ==="

cd "${SRCDIR}"
tar -xf "${PACKAGE}-${VERSION}.tar.xz"
cd "${PACKAGE}-${VERSION}"

# gl_cv_func_strcasecmp_works: diffutils 3.12 tries to run a test binary to
# check if strcasecmp works. This fails during cross-compilation. We know
# glibc's strcasecmp is correct, so we tell configure the answer directly.
./configure \
    --prefix=/usr \
    --host="${LFS_TGT}" \
    --build="$(./build-aux/config.guess)" \
    gl_cv_func_strcasecmp_works=yes

make
make DESTDIR="${LFS}" install

cd "${SRCDIR}"
rm -rf "${PACKAGE}-${VERSION}"
echo "=== ${PACKAGE}-${VERSION} complete ==="