Message output during Precompiled Header (PCH) processing
Whenever the compiler creates or uses a PCH file, it displays a message. You can suppress these messages or make them more verbose.
When the compiler creates or uses a PCH file, it displays the following kind of message:
test.c: creating precompiled header file test.pch
You can suppress this message with the compiler command-line option
--pch_verbose option enables verbose mode. In verbose mode, the
compiler displays a message for each PCH file that it considers but does not use, giving
the reason why it cannot be used.