Rebuild local Blender WASM environment and recovery evidence

tools/web/native-build-env.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Shared environment for native Blender builds and desktop fixture checkers.
+repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+
+export BLENDER_SOURCE_DIR="${BLENDER_SOURCE_DIR:-${repo_root}/blender-5.2.0}"
+export BLENDER_BUILD_DIR="${BLENDER_BUILD_DIR:-${repo_root}/build_blender_native}"
+export BLENDER_DEPS_ROOT="${BLENDER_DEPS_ROOT:-${repo_root}/.deps/native}"
+export BLENDER_PYTHON_ROOT="${BLENDER_PYTHON_ROOT:-${BLENDER_DEPS_ROOT}/python}"
+export BLENDER_CMAKE_HELPERS="${repo_root}/tools/web/cmake"
+
+native_lib_dirs=()
+if [[ -d "${BLENDER_DEPS_ROOT}" ]]; then
+  while IFS= read -r directory; do
+    native_lib_dirs+=("${directory}")
+  done < <(find "${BLENDER_DEPS_ROOT}" -type d \( -name lib -o -name lib64 \) -print | sort)
+fi
+if [[ -d "${BLENDER_PYTHON_ROOT}/lib" ]]; then
+  native_lib_dirs+=("${BLENDER_PYTHON_ROOT}/lib")
+fi
+for site_packages in \
+  "${BLENDER_PYTHON_ROOT}/lib/python3.13/site-packages" \
+  "${BLENDER_BUILD_DIR}/bin/5.2/python/lib/python3.13/site-packages"; do
+  for private_lib_dir in "${site_packages}"/*.libs; do
+    if [[ -d "${private_lib_dir}" ]]; then
+      native_lib_dirs+=("${private_lib_dir}")
+    fi
+  done
+done
+if [[ -n "${LD_LIBRARY_PATH:-}" ]]; then
+  native_lib_dirs+=("${LD_LIBRARY_PATH}")
+fi
+if ((${#native_lib_dirs[@]})); then
+  IFS=:; export LD_LIBRARY_PATH="${native_lib_dirs[*]}"
+fi
+
+export PATH="${BLENDER_PYTHON_ROOT}/bin:${PATH}"
+
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+  printf 'native-build-env-ok source=%s build=%s deps=%s\n' \
+    "${BLENDER_SOURCE_DIR}" "${BLENDER_BUILD_DIR}" "${BLENDER_DEPS_ROOT}"
+  printf 'compiler=%s\n' "$(command -v "${CC:-gcc-14}" || command -v gcc || printf 'missing')"
+  printf 'cmake=%s ninja=%s\n' "$(command -v cmake || printf 'missing')" "$(command -v ninja || printf 'missing')"
+fi