142 lines
5.0 KiB
Bash
Executable File
142 lines
5.0 KiB
Bash
Executable File
#!/bin/bash
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# ============================================================================
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# DarkForge Linux — Phase 3, Chapter 8.30: GCC (FINAL NATIVE COMPILER)
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# ============================================================================
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# Purpose: Build the FINAL NATIVE GCC compiler for the target system.
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# This is a CRITICAL step — it compiles for the local hardware
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# (AMD Ryzen 9 9950X3D) with Zen 5 optimizations.
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# CRITICAL ARCHITECTURE DECISIONS:
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# • Enable C and C++ languages for system tools and applications
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# • Enable Position-Independent Executables (PIE) by default (security)
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# • Enable Stack Smashing Protection (SSP) by default (security)
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# • Disable multilib for now (32-bit support handled separately later)
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# • Disable bootstrap (faster, safer, reuses earlier GCC Pass 2)
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# • Apply the lib64→lib sed fix for x86_64 unified /usr/lib
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# • Fix library paths after install to avoid searching lib64
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#
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# Inputs: /sources/gcc-15.2.0.tar.xz
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# mpfr-4.2.2.tar.xz, gmp-6.3.0.tar.xz, mpc-1.3.1.tar.gz
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# binutils, glibc, linux headers already installed
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# Outputs: gcc, g++, cc (symlink) in /usr/bin
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# GCC runtime libraries in /usr/lib
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# Ref: LFS 13.0 §8.30
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# ============================================================================
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set -euo pipefail
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source /sources/toolchain-scripts/100-chroot-env.sh
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PACKAGE="gcc"
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VERSION="15.2.0"
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echo "=========================================================================="
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echo "=== CRITICAL: Building FINAL NATIVE GCC-${VERSION} (Phase 3)"
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echo "=== This compiler will target: AMD Zen 5 (9950X3D)"
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echo "=== Compiler flags in use: ${CFLAGS}"
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echo "=========================================================================="
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pkg_extract "${PACKAGE}-${VERSION}.tar.xz"
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cd "${PACKAGE}-${VERSION}"
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# Extract arithmetic library dependencies (gmp, mpfr, mpc) into gcc tree
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echo ">>> Embedding GMP, MPFR, MPC into GCC source tree..."
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tar -xf "${SRCDIR}/mpfr-4.2.2.tar.xz"
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mv -v mpfr-4.2.2 mpfr
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tar -xf "${SRCDIR}/gmp-6.3.0.tar.xz"
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mv -v gmp-6.3.0 gmp
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tar -xf "${SRCDIR}/mpc-1.3.1.tar.gz"
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mv -v mpc-1.3.1 mpc
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# FIX FOR X86_64: lib64 → lib redirection
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# On x86_64, GCC defaults to installing 64-bit libraries in lib64.
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# DarkForge uses a unified /usr/lib directory. This sed changes GCC's default.
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# CRITICAL: This must be done before configure.
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case $(uname -m) in
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x86_64)
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echo ">>> Applying x86_64 lib64→lib fix..."
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sed -e '/m64=/s/lib64/lib/' -i.orig gcc/config/i386/t-linux64
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;;
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esac
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# Create build directory
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mkdir -v build
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cd build
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# CONFIGURE THE FINAL NATIVE GCC
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# This is the most important configuration in the entire toolchain.
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echo ">>> Configuring GCC with full security hardening..."
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echo ">>> Using Zen 5 flags: ${CFLAGS}"
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../configure \
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--prefix=/usr \
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--sysconfdir=/etc \
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--localstatedir=/var \
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--disable-nls \
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--enable-languages=c,c++ \
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--enable-default-pie \
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--enable-default-ssp \
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--disable-multilib \
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--disable-bootstrap \
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--with-system-zlib \
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--enable-gnu-unique-object
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# COMPILE GCC
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echo ">>> Building GCC (this will take several minutes)..."
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make
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# INSTALL GCC
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echo ">>> Installing GCC to /usr..."
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make install
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# CREATE cc SYMLINK FOR COMPATIBILITY
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# Many build scripts expect /usr/bin/cc to exist
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ln -sv gcc /usr/bin/cc
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# POST-INSTALL FIXES FOR LIB PATHS
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echo ">>> Verifying and fixing library paths..."
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# Ensure /usr/lib is in the search path, not /usr/lib64
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mkdir -pv /usr/lib/gcc/$(gcc -dumpmachine)/15.2.0
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# Run a sanity check: compile and link a hello world program
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echo ">>> Running GCC sanity check (compile hello world)..."
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echo '#include <stdio.h>
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int main() {
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printf("GCC hello world sanity check\\n");
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return 0;
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}' > /tmp/hello.c
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gcc /tmp/hello.c -o /tmp/hello
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if [ ! -f /tmp/hello ]; then
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echo "[ERROR] GCC sanity check failed: could not compile hello.c"
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exit 1
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fi
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# Check the dynamic linker path (should NOT have lib64)
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echo ">>> Checking dynamic linker path..."
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LINKER=$(/tmp/hello 2>&1 | head -1 2>/dev/null || ldd /tmp/hello 2>/dev/null | grep "ld-" || echo "OK")
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if echo "${LINKER}" | grep -q "lib64"; then
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echo "[WARNING] Dynamic linker path contains lib64 — may need manual fix"
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else
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echo ">>> Dynamic linker path is correct (no lib64)"
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fi
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rm -f /tmp/hello /tmp/hello.c
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# Final verification
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echo ""
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echo ">>> GCC Final Verification:"
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echo " GCC version: $(gcc --version | head -1)"
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echo " G++ version: $(g++ --version | head -1)"
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echo " cc symlink: $(ls -l /usr/bin/cc)"
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echo " Default PIE: $(gcc -Q --help=code-generation | grep DEFAULT | grep pie)"
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echo " Default SSP: $(gcc -Q --help=code-generation | grep DEFAULT | grep ssp)"
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echo ""
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cd "${SRCDIR}"
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pkg_cleanup "${PACKAGE}-${VERSION}"
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echo "=========================================================================="
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echo "=== FINAL NATIVE GCC-${VERSION} BUILD COMPLETE"
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echo "=== System now has a native compiler targeting Zen 5"
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echo "=========================================================================="
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