#!/bin/bash
# ============================================================================
# DarkForge Linux — Phase 3, Chapter 8.23: MPFR (Multiple Precision Float)
# ============================================================================
# Purpose:  Build MPFR, a library for arbitrary-precision floating-point
#           arithmetic. Required by GCC for advanced floating-point operations.
# Inputs:   /sources/mpfr-4.2.2.tar.xz
#           GMP already installed
# Outputs:  MPFR library in /usr/lib, headers in /usr/include
# Ref:      LFS 13.0 §8.23
# ============================================================================

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

PACKAGE="mpfr"
VERSION="4.2.2"

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

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

# Configure MPFR with GMP support already in place
./configure \
    --prefix=/usr \
    --disable-static \
    --enable-thread-safe

make
make html
make install
make install-html

# Verify installation
echo "MPFR version: $(grep -o 'define MPFR_VERSION_MAJOR [0-9]*' src/mpfrversion.h | awk '{print $NF}').$(grep -o 'define MPFR_VERSION_MINOR [0-9]*' src/mpfrversion.h | awk '{print $NF}')"

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