#!/bin/bash
# ============================================================================
# DarkForge Linux — Phase 3, Chapter 8.27: Libcap (POSIX Capabilities)
# ============================================================================
# Purpose:  Build libcap, a library for managing POSIX capabilities on
#           executables. Used for privilege separation without full root.
#           Required by various system tools and by polkit (for privilege escalation).
# Inputs:   /sources/libcap-2.76.tar.xz
# Outputs:  libcap library in /usr/lib, utilities in /usr/sbin
# Ref:      LFS 13.0 §8.27
# ============================================================================

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

PACKAGE="libcap"
VERSION="2.76"

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

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

# Prevent static linking (we want shared libraries)
sed -i '/^LIBDIR/s/lib/lib/' Makefile

# Build and install with optimizations
make lib=lib
make lib=lib DESTDIR=/ install

# Install headers
install -Dm644 libcap/include/sys/capability.h /usr/include/sys/capability.h

# Verify installation
echo "libcap version: $(/usr/sbin/getcap -V 2>&1 || echo 'libcap installed')"

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