message: the cmake error message when building tv mode suggested that
  LLVM needed to be built using -DLLVM_ENABLE_ASSERTIONS=ON, but
  what's needed is really -DLLVM_ENABLE_EH=ON
diff: @@ -3,8 +3,12 @@ find_package(LLVM REQUIRED CONFIG)
  message(STATUS "Found LLVM ${LLVM_PACKAGE_VERSION}")
  message(STATUS "Using LLVMConfig.cmake in: ${LLVM_DIR}")
  -if (NOT LLVM_ENABLE_RTTI OR NOT LLVM_ENABLE_EH)
  - message(FATAL_ERROR "LLVM must be built with '-DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_ENABLE_RTTI=ON'")
  +if (NOT LLVM_ENABLE_RTTI)
  + message(FATAL_ERROR "LLVM must be built with '-DLLVM_ENABLE_RTTI=ON'")
  +endif()
  +
  +if (NOT LLVM_ENABLE_EH)
  + message(FATAL_ERROR "LLVM must be built with '-DLLVM_ENABLE_EH=ON'")
  endif()
  list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}")
  