-include <file>

[Henry Cejtin]

Ah,  I forgot: it is now -include, not -i.  Still, the usage message does not
show a space.  Also, it does not work correctly.  Ah, my guess  is  that  you
use
    #include <file>
and not
    #include "file"
The  searching  rules  that  the  C preprocessor uses are not quite the same.
Using `<...>' makes things easier since the directory the .c file  is  in  is
NOT looked at for these (but is for the `"' case.

This is all fine, but it should be pointed out in the man page and user guide
that it uses angle-brackets.