can not crossbuild rtl-[wasm-embedded]

[cai]

1. build
================
wasm-embedded rtl build error info:
systhrd.inc(18,4) Fatal: User defined: This file shouldn't be included if thread support is disabled!
======================
wasm-wasi is ok!
-------------------------------

2. system.pp code
wasm-embedded:

Code: Pascal  [Select][+][-]

1. Unit System;
2.  
3. {*****************************************************************************}
4.                                     interface
5. {*****************************************************************************}
6.  
7. {$define FPC_SYSTEM_HAS_STACKTOP}
8.  
9. {$define FPC_IS_SYSTEM}
10. {$define HAS_CMDLINE}
11.  
12. { $define USE_NOTHREADMANAGER}
13.  
14. {$define DISABLE_NO_THREAD_MANAGER}
15. { Do not use standard memory manager }
16. {$define HAS_MEMORYMANAGER}
17. {$define FPC_NO_DEFAULT_HEAP}
18. ...
19.  

wasm-wasi:

Code: Pascal  [Select][+][-]

1. unit system;
2.  
3. interface
4.  
5. {$define FPC_IS_SYSTEM}
6. {$ifdef FPC_WASM_THREADS}
7.   {$define DISABLE_NO_THREAD_MANAGER}
8. {$else FPC_WASM_THREADS}
9.   {$define USE_NOTHREADMANAGER}
10. {$endif FPC_WASM_THREADS}
11.  
12. {$I systemh.inc}
13.  

you can see that in wasm-embedded define USE_NOTHREADMANAGER & DISABLE_NO_THREAD_MANAGER，
then in rtl/inc/system.inc will：

Code: Pascal  [Select][+][-]

1. {$ifdef DISABLE_NO_THREAD_MANAGER}
2. { OS Dependent implementation }
3. {$i systhrd.inc}
4. {$endif DISABLE_NO_THREAD_MANAGER}  
5.  

finally，error happened in systhrd.inc

Code: Pascal  [Select][+][-]

1. {$ifndef FPC_WASM_THREADS}
2.   {$fatal This file shouldn't be included if thread support is disabled!}
3. {$endif FPC_WASM_THREADS}
4.  

3. question
is this problem can be fix by any parameter in crossbuild, or it is a BUG?

4. custom fix
I modify some define in system.pp[wasm-embedded]

Code: Pascal  [Select][+][-]

1. Unit System;
2.  
3. {*****************************************************************************}
4.                                     interface
5. {*****************************************************************************}
6.  
7. {$define FPC_SYSTEM_HAS_STACKTOP}
8.  
9. {$define FPC_IS_SYSTEM}
10. {$define HAS_CMDLINE}
11.  
12.  
13. //20230109 edit by cai!
14. {$ifndef FPC_WASM_THREADS}
15.   {$define USE_NOTHREADMANAGER}
16. {$else}
17. { $define USE_NOTHREADMANAGER}
18. {$define DISABLE_NO_THREAD_MANAGER}
19. {$endif FPC_WASM_THREADS}
20.  

and crossbuild rtl is OK but packages, looks like not completed!

======================
wiki said:
The FPC Wasm embedded RTL consists of these units:
rtl
rtl-extra
tplylib