#!/bin/bash
# ============================================================================
# DarkForge Linux — Phase 3, Chapter 8.7: Bzip2
# ============================================================================
# Purpose:  Build and install bzip2 compression utility and library.
#           Needed for compressing/decompressing bzip2 archives.
# Inputs:   /sources/bzip2-1.0.8.tar.gz, /sources/bzip2-1.0.8-install_docs-1.patch
# Outputs:  /usr/bin/bzip2, /usr/lib/libbz2.so.1
# Ref:      LFS 13.0 §8.7
# ============================================================================

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

PACKAGE="bzip2"
VERSION="1.0.8"

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

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

# Apply LFS patch to install documentation
echo ">>> Applying bzip2-1.0.8-install_docs-1.patch..."
patch -Np1 -i ../bzip2-1.0.8-install_docs-1.patch

# Bzip2 uses a Makefile (not autoconf)
# Compile bzip2
make -f Makefile-libbz2_so
make clean

# Build bzip2 normally (static version for bzip2 binary)
make

# Install bzip2
make PREFIX=/usr install

# The Makefile builds dynamic libraries; we need to install them
# Install the dynamic library we built
cp bzip2-shared /bin/bzip2
cp libbz2.so.1.0.8 /lib/
ln -s libbz2.so.1.0.8 /lib/libbz2.so.1

# Create symlink in /usr/lib (some packages look there)
ln -s /lib/libbz2.so.1 /usr/lib/libbz2.so

# Verify installation
if [ -x /bin/bzip2 ]; then
    echo "PASS: bzip2 binary installed"
else
    echo "FAIL: bzip2 binary not found"
    exit 1
fi

if [ -f /lib/libbz2.so.1.0.8 ]; then
    echo "PASS: libbz2.so installed"
else
    echo "FAIL: libbz2.so not found"
    exit 1
fi

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