initial commit

scripts/install_odin.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# Installs the pinned Odin release matching the runner's native architecture.
+# The Odin release tarballs are named odin-linux-{amd64,arm64}-<version>.tar.gz;
+# on an arm64 runner the amd64 Odin binary only runs under emulation and emits
+# amd64 objects, which a natively-installed clang/ld cannot link ("Relocations
+# in generic ELF (EM: 62)").
+set -euo pipefail
+
+VERSION="${ODIN_VERSION:-dev-2026-07}"
+
+ARCH="$(uname -m)"
+case "$ARCH" in
+  x86_64 | amd64) OBJ_ARCH="amd64" ;;
+  aarch64 | arm64) OBJ_ARCH="arm64" ;;
+  *)
+    echo "Unsupported runner architecture: $ARCH" >&2
+    exit 1
+    ;;
+esac
+
+curl -fL -o /tmp/odin.tar.gz \
+  "https://github.com/odin-lang/Odin/releases/download/${VERSION}/odin-linux-${OBJ_ARCH}-${VERSION}.tar.gz"
+mkdir -p /tmp/odin
+tar -xzf /tmp/odin.tar.gz -C /tmp/odin --strip-components=1
+
+# Work around an Odin binding bug: for ODIN_ARCH == .arm64 the vendored
+# raylib references `vendor/raylib/linux-arm/libraylib.a`, but the release
+# tarball ships it under `linux-arm64/` (see vendor/raylib/raylib.odin).
+if [ "${OBJ_ARCH}" = "arm64" ] \
+  && [ -d /tmp/odin/vendor/raylib/linux-arm64 ] \
+  && [ ! -e /tmp/odin/vendor/raylib/linux-arm ]; then
+  ln -s linux-arm64 /tmp/odin/vendor/raylib/linux-arm
+fi
+
+if [ -n "${GITHUB_PATH:-}" ]; then
+  echo "/tmp/odin" >> "$GITHUB_PATH"
+fi
+
+echo "Installed Odin ${VERSION} (host arch: ${ARCH}, release arch: ${OBJ_ARCH})"