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/002-gcc-pass1.sh

@@ -0,0 +1,96 @@
+#!/bin/bash
+# ============================================================================
+# DarkForge Linux — Phase 0, Chapter 5: GCC Pass 1
+# ============================================================================
+# Purpose:  Build the cross-compiler (GCC) as the second component of the
+#           cross-toolchain. This produces a C/C++ compiler that runs on the
+#           host but generates code for the target (x86_64-darkforge-linux-gnu).
+#           No hardware-specific flags (-march=znver5) yet — those come later
+#           when we have a native compiler.
+# Inputs:   ${LFS}/sources/gcc-15.2.0.tar.xz, mpfr, gmp, mpc tarballs
+# Outputs:  Cross-GCC installed to ${LFS}/tools/
+# Assumes:  Binutils Pass 1 complete, running as 'lfs' user
+# Ref:      LFS 13.0 §5.3
+# ============================================================================
+
+set -euo pipefail
+source "${LFS}/sources/darkforge-env.sh"
+
+PACKAGE="gcc"
+VERSION="15.2.0"
+SRCDIR="${LFS}/sources"
+
+echo "=== Building ${PACKAGE}-${VERSION} (Cross-Toolchain Pass 1) ==="
+
+cd "${SRCDIR}"
+tar -xf "${PACKAGE}-${VERSION}.tar.xz"
+cd "${PACKAGE}-${VERSION}"
+
+# Extract and link GCC's arithmetic library dependencies
+tar -xf ../mpfr-4.2.2.tar.xz
+mv -v mpfr-4.2.2 mpfr
+tar -xf ../gmp-6.3.0.tar.xz
+mv -v gmp-6.3.0 gmp
+tar -xf ../mpc-1.3.1.tar.gz
+mv -v mpc-1.3.1 mpc
+
+# Fix lib64 directory naming on x86_64
+# GCC defaults to installing 64-bit libraries in lib64, but LFS/DarkForge
+# uses a unified /usr/lib directory. This sed changes the default.
+case $(uname -m) in
+    x86_64)
+        sed -e '/m64=/s/lib64/lib/' -i.orig gcc/config/i386/t-linux64
+        ;;
+esac
+
+mkdir -v build
+cd build
+
+# Configure cross-compiler
+# --target=$LFS_TGT: cross-compile for our target
+# --with-glibc-version=2.43: tell GCC which glibc version to expect
+# --with-newlib: inhibit building libc-dependent code (no libc yet)
+# --without-headers: don't look for system headers yet
+# --enable-default-pie: position-independent executables by default (security)
+# --enable-default-ssp: stack smashing protection by default (security)
+# --disable-shared: static link GCC internal libraries
+# --disable-multilib: no 32-bit support in the cross-compiler
+#   (multilib will be addressed later for Steam/Wine compatibility)
+# --disable-threads: no threading support yet (no glibc/pthreads)
+# --disable-lib*: disable libraries that aren't needed at this stage
+# --enable-languages=c,c++: only C and C++ compilers needed
+../configure \
+    --target="${LFS_TGT}" \
+    --prefix="${LFS}/tools" \
+    --with-glibc-version=2.43 \
+    --with-sysroot="${LFS}" \
+    --with-newlib \
+    --without-headers \
+    --enable-default-pie \
+    --enable-default-ssp \
+    --disable-nls \
+    --disable-shared \
+    --disable-multilib \
+    --disable-threads \
+    --disable-libatomic \
+    --disable-libgomp \
+    --disable-libquadmath \
+    --disable-libssp \
+    --disable-libvtv \
+    --disable-libstdcxx \
+    --enable-languages=c,c++
+
+make
+make install
+
+# Create the full version of the internal limits.h header
+# GCC needs this to properly handle system limits.h
+cd ..
+cat gcc/limitx.h gcc/glimits.h gcc/limity.h > \
+    "$(dirname "$("${LFS_TGT}-gcc" -print-libgcc-file-name)")/include/limits.h"
+
+# Cleanup
+cd "${SRCDIR}"
+rm -rf "${PACKAGE}-${VERSION}"
+
+echo "=== ${PACKAGE}-${VERSION} Pass 1 complete ==="