OK, forget all what I said about temperature - now it hanged at 62"C (active cooling) but always at the same compilation progress. 
 
	 
 
Sep 17 07:38:41 opi4 kernel:  oom_kill_process+0x130/0x2d8
Sep 17 07:38:41 opi4 kernel:  out_of_memory+0xe0/0x59c
Sep 17 07:38:41 opi4 kernel:  __alloc_pages+0xc40/0xe48
	 
 
	The default trip points are working well.
 
	 
	Sorry for disturbing 😗