#!/bin/bash
# ============================================================================
# DarkForge Linux — Phase 3, Chapter 8.15: Bc
# ============================================================================
# Purpose:  Build and install bc, an arbitrary-precision arithmetic language.
#           Bc is a small but useful calculator utility for scripts and users.
# Inputs:   /sources/bc-7.0.3.tar.xz
# Outputs:  /usr/bin/bc, /usr/bin/dc
# Ref:      LFS 13.0 §8.15
# ============================================================================

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

PACKAGE="bc"
VERSION="7.0.3"

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

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

# Configure bc for the target system
# Note: bc's configure script is unusual; it's a custom ./configure
./configure --prefix=/usr \
    -G \
    -O2 \
    --mandir=/usr/share/man

# Build bc
# The -j flag for make often doesn't work with bc's custom build system
# So we don't use it here
make

# Run tests
make test

# Install bc
make install

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

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

# Test bc
echo "2 + 2" | /usr/bin/bc | grep -q "4" && echo "PASS: bc works correctly"

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