#!/bin/bash
# ============================================================================
# DarkForge Linux — Phase 3, Chapter 8.10: Zstd
# ============================================================================
# Purpose:  Build and install Zstandard compression library and tools.
#           Zstd offers better compression than gzip with reasonable speed.
#           Increasingly used by modern Linux systems and tools.
# Inputs:   /sources/zstd-1.5.7.tar.gz
# Outputs:  /usr/bin/zstd, /usr/lib/libzstd.so
# Ref:      LFS 13.0 §8.10
# ============================================================================

set -euo pipefail
source /sources/toolchain-scripts/100-chroot-env.sh

PACKAGE="zstd"
VERSION="1.5.7"

echo "=== Building ${PACKAGE}-${VERSION} (Phase 3) ==="

pkg_extract "${PACKAGE}-${VERSION}.tar.gz"
cd "${PACKAGE}-${VERSION}"

# Zstd uses a Makefile (not autoconf)
# Build zstd
# Note: Zstd build can be slow due to its heavy optimization
make

# Run tests (optional)
make test || true

# Install zstd
make PREFIX=/usr DESTDIR=/ install

# Verify symlinks are correct
if [ -L /usr/lib/libzstd.so ]; then
    echo "PASS: libzstd.so symlink exists"
else
    echo "FAIL: libzstd.so symlink not found"
    exit 1
fi

if [ -x /usr/bin/zstd ]; then
    echo "PASS: zstd binary installed"
else
    echo "FAIL: zstd binary not found"
    exit 1
fi

pkg_cleanup "${PACKAGE}-${VERSION}"
echo "=== ${PACKAGE}-${VERSION} complete ==="