Support for Precompiled Header (PCH) files is
deprecated from ARM Compiler 5.05 onwards on all platforms. Note that ARM Compiler
on Windows 8 never supported PCH files.
When the compiler creates or uses a PCH file, it displays the following kind of
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.