Initial commit: DarkForge Linux — Phases 0-12

Complete from-scratch Linux distribution targeting AMD Ryzen 9 9950X3D +
NVIDIA RTX 5090 on ASUS ROG CROSSHAIR X870E HERO.

Deliverables:
- dpack: custom package manager in Rust (3,800 lines)
  - TOML package parser, dependency resolver, build sandbox
  - CRUX Pkgfile and Gentoo ebuild converters
  - Shared library conflict detection
- 124 package definitions across 4 repos (core/extra/desktop/gaming)
- 34 toolchain bootstrap scripts (LFS 13.0 adapted for Zen 5)
- Linux 6.19.8 kernel config (hardware-specific, fully commented)
- SysVinit init system with rc.d service scripts
- Live ISO builder (UEFI-only, squashfs+xorriso)
- Interactive installer (GPT partitioning, EFISTUB boot)
- Integration test checklist (docs/TESTING.md)

No systemd. No bootloader. No display manager.
Kernel boots via EFISTUB → auto-login → dwl Wayland compositor.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

toolchain/scripts/005-libstdcxx.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+# ============================================================================
+# DarkForge Linux — Phase 0, Chapter 5: Libstdc++ (from GCC)
+# ============================================================================
+# Purpose:  Build the C++ standard library (libstdc++) for the target.
+#           This was deferred from GCC Pass 1 because it depends on glibc,
+#           which wasn't available then. Now that glibc is installed in the
+#           target sysroot, we can build libstdc++.
+# Inputs:   ${LFS}/sources/gcc-15.2.0.tar.xz (same source as GCC Pass 1)
+# Outputs:  libstdc++ in ${LFS}/usr/lib/
+# Assumes:  GCC Pass 1 + Glibc complete
+# Ref:      LFS 13.0 §5.6
+# ============================================================================
+
+set -euo pipefail
+source "${LFS}/sources/darkforge-env.sh"
+
+PACKAGE="gcc"
+VERSION="15.2.0"
+SRCDIR="${LFS}/sources"
+
+echo "=== Building libstdc++ from ${PACKAGE}-${VERSION} ==="
+
+cd "${SRCDIR}"
+tar -xf "${PACKAGE}-${VERSION}.tar.xz"
+cd "${PACKAGE}-${VERSION}"
+
+mkdir -v build
+cd build
+
+# Configure only the libstdc++ component
+# --host=$LFS_TGT: cross-compile for our target
+# --disable-multilib: no 32-bit support at this stage
+# --disable-nls: no internationalization
+# --disable-libstdcxx-pch: skip precompiled headers (saves time/space)
+# --with-gxx-include-dir: point to the cross-compiler's include path
+../libstdc++-v3/configure \
+    --host="${LFS_TGT}" \
+    --build="$(../config.guess)" \
+    --prefix=/usr \
+    --disable-multilib \
+    --disable-nls \
+    --disable-libstdcxx-pch \
+    --with-gxx-include-dir="/tools/${LFS_TGT}/include/c++/${VERSION}"
+
+make
+make DESTDIR="${LFS}" install
+
+# Remove libtool archive files — they cause problems with cross-compilation
+rm -v "${LFS}/usr/lib/lib"{stdc++{,exp,fs},supc++}.la 2>/dev/null || true
+
+# Cleanup
+cd "${SRCDIR}"
+rm -rf "${PACKAGE}-${VERSION}"
+
+echo "=== libstdc++ from ${PACKAGE}-${VERSION} complete ==="