PCH is used only for the first header

[Briltz, Denis]

>>	#include "a.h"
>>	#include "b.h"
>>
>> only pch for "a.h" can be used and ignored for "b.h" and subsequent ones.
>> I.e. if I have "b.h.gch" and do not have "a.h.gch" then "b.h.gch" will
not
>> be used.
>>
>> Is it supposed behavior? I did not find a word about this in online docs.
>
>From invoke.texi (which is used to build the info file for your local
>install and the WWW content once/if a branch with the feature is released):
>
>"A precompiled header file can be used only when these conditions apply:
>[...] Only one precompiled header can be used in a particular compilation."

Does "only one" means "only first one"? What if I want only "b.h.gch" to be
used?

Denis.