1 files changed, 53 insertions, 0 deletions
diff --git a/scripts/build-toolchain.sh b/scripts/build-toolchain.sh
new file mode 100755
index 0000000..c879a8c
--- /dev/null
+++ b/scripts/build-toolchain.sh
@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+# build-toolchain.sh
+# Builds a complete x86_64-elf cross-compiler into ~/opt/cross
+set -e
+export PREFIX="$HOME/opt/cross"
+export TARGET="x86_64-elf"
+export PATH="$PREFIX/bin:$PATH"
+BINUTILS_VER="2.45.1"
+GCC_VER="15.3.0"
+BUILD_DIR="$HOME/cross-build"
+mkdir -p "$BUILD_DIR" "$PREFIX"
+cd "$BUILD_DIR"
+echo "==> Downloading sources..."
+wget -nc "https://ftp.gnu.org/gnu/binutils/binutils-${BINUTILS_VER}.tar.xz"
+wget -nc "https://ftp.gnu.org/gnu/gcc/gcc-${GCC_VER}/gcc-${GCC_VER}.tar.xz"
+echo "==> Extracting..."
+tar xf "binutils-${BINUTILS_VER}.tar.xz"
+tar xf "gcc-${GCC_VER}.tar.xz"
+# ── Build binutils (assembler, linker, objdump, readelf, etc.) ────────
+echo "==> Building binutils..."
+mkdir -p build-binutils && cd build-binutils
+"../binutils-${BINUTILS_VER}/configure" \
+    --target="$TARGET" \
+    --prefix="$PREFIX" \
+    --with-sysroot \
+    --disable-nls \
+    --disable-werror
+make -j"$(nproc)"
+make install
+cd ..
+# ── Build GCC (C frontend only, no standard library at all) ──────────
+echo "==> Building GCC..."
+mkdir -p build-gcc && cd build-gcc
+"../gcc-${GCC_VER}/configure" \
+    --target="$TARGET" \
+    --prefix="$PREFIX" \
+    --disable-nls \
+    --enable-languages=c,c++ \
+    --without-headers \
+    --disable-hosted-libstdcxx
+make -j"$(nproc)" all-gcc
+make -j"$(nproc)" all-target-libgcc
+make install-gcc
+make install-target-libgcc
+cd ..
+echo ""
+echo "======================================================"
+echo " Cross-compiler ready!"
+echo " Binaries are in: $PREFIX/bin/"
+echo ""
+echo " Add this line to your ~/.bashrc or ~/.zshrc:"
+echo "   export PATH=\"\$HOME/opt/cross/bin:\$PATH\""
+echo "======================================================"