message: propagate JIT enable/disable status to autodiff library
diff: @@ -31,6 +31,7 @@ foreach(ENOKI_AUTODIFF_VARIANT ${ENOKI_AUTODIFF_VARIANTS})
  target_link_libraries(${ENOKI_AUTODIFF_VARIANT_NAME} PRIVATE enoki)
  if (ENOKI_ENABLE_JIT)
  target_link_libraries(${ENOKI_AUTODIFF_VARIANT_NAME} PRIVATE enoki-jit)
  + target_compile_definitions(${ENOKI_AUTODIFF_VARIANT_NAME} PRIVATE -DENOKI_ENABLE_JIT=1)
  endif()
  target_include_directories(
  ${ENOKI_AUTODIFF_VARIANT_NAME} PRIVATE ../../ext/enoki-jit/ext/robin_map/include
  @@ -51,4 +52,5 @@ target_compile_definitions(enoki-autodiff PRIVATE -DENOKI_BUILD_AUTODIFF=1)
  if (ENOKI_ENABLE_JIT)
  target_link_libraries(enoki-autodiff PRIVATE enoki-jit)
  + target_compile_definitions(enoki-autodiff PRIVATE -DENOKI_ENABLE_JIT=1)
  endif()
  