From d993377d393d778fb7eed5ad5d122862295e43a2 Mon Sep 17 00:00:00 2001
From: Peter Fors <peter.fors@mindkiller.com>
Date: Fri, 31 Oct 2025 06:53:50 +0100
Subject: Add script to build local gcc, build.sh already updated

---
 gcc_setup.sh | 102 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100755 gcc_setup.sh

diff --git a/gcc_setup.sh b/gcc_setup.sh
new file mode 100755
index 0000000..22c96ff
--- /dev/null
+++ b/gcc_setup.sh
@@ -0,0 +1,102 @@
+#!/bin/bash
+# bootstrap.sh - Build project-local GCC toolchain
+
+set -e
+
+GCC_VERSION=15.2.0  # Use latest stable release
+TOOLCHAIN_DIR="$(pwd)/toolchain"
+GCC_PREFIX="${TOOLCHAIN_DIR}/gcc-${GCC_VERSION}"
+
+# Check if already built
+if [ -f "${GCC_PREFIX}/bin/gcc" ]; then
+	echo "GCC ${GCC_VERSION} already built in ${GCC_PREFIX}"
+	echo "To rebuild, remove ${TOOLCHAIN_DIR} and re-run"
+	exit 0
+fi
+
+# Check system dependencies
+check_deps() {
+	local missing=""
+	for cmd in make tar wget as ld; do
+		if ! command -v $cmd &> /dev/null; then
+			missing="$missing $cmd"
+		fi
+	done
+
+	# Check for required libraries
+	for lib in isl mpc; do
+		if ! ldconfig -p | grep -q "lib${lib}\.so"; then
+			missing="$missing lib${lib}"
+		fi
+	done
+
+	if [ -n "$missing" ]; then
+		echo "ERROR: Missing system dependencies:$missing"
+		echo "On Arch: sudo pacman -S base-devel binutils wget libisl libmpc"
+		exit 1
+	fi
+}
+
+check_deps
+
+echo "Building GCC ${GCC_VERSION} in ${GCC_PREFIX}"
+echo "This will take ~3-4 minutes on an AMD 7950X..."
+
+mkdir -p "${TOOLCHAIN_DIR}"
+cd "${TOOLCHAIN_DIR}"
+
+
+# Download GCC sources
+if [ ! -f "gcc-${GCC_VERSION}.tar.xz" ]; then
+	echo "Downloading GCC ${GCC_VERSION}..."
+	# Use mirror redirect (usually faster)
+	wget "https://ftpmirror.gnu.org/gcc/gcc-${GCC_VERSION}/gcc-${GCC_VERSION}.tar.xz" \
+		|| wget "https://ftp.gnu.org/gnu/gcc/gcc-${GCC_VERSION}/gcc-${GCC_VERSION}.tar.xz"
+fi
+
+# Extract
+if [ ! -d "gcc-${GCC_VERSION}" ]; then
+	echo "Extracting GCC sources..."
+	tar xf "gcc-${GCC_VERSION}.tar.xz"
+fi
+
+cd "gcc-${GCC_VERSION}"
+
+# Download prerequisites (GMP, MPFR, MPC, ISL)
+echo "Downloading GCC prerequisites..."
+./contrib/download_prerequisites
+
+# Build
+mkdir -p build
+cd build
+
+echo "Configuring GCC..."
+../configure \
+	--prefix="${GCC_PREFIX}" \
+	--enable-languages=c \
+	--with-system-zlib \
+	--with-linker-hash-style=gnu \
+	--disable-multilib \
+	--disable-bootstrap \
+	--disable-libsanitizer \
+	--disable-libssp \
+	--disable-werror \
+	--disable-cet \
+	--disable-default-pie \
+	--disable-default-ssp \
+	--enable-lto
+
+echo "Building GCC (using $(nproc) cores)..."
+make -j$(nproc)
+
+echo "Installing GCC to ${GCC_PREFIX}..."
+make install
+
+echo ""
+echo "======================================"
+echo "GCC ${GCC_VERSION} built successfully!"
+echo "======================================"
+echo "Toolchain installed in: ${GCC_PREFIX}"
+echo ""
+echo "To use it, just run: ./build.sh or ./Bench.sh"
+
-- 
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