This article is from the Apple II GNO FAQ, by Devin Reade with numerous contributions by others.
A#11.11: This is an unfortunate side-effect of using the ORCA/C "path"
pragma to avoid duplication of system header files between your
GNO and ORCA installations. (See Q#5.1, Q#6.1, Q#6.4, and
Q#6.5.)
The reason for the problem is that when the file is included
with the angle bracket syntax (vice double quotes), ORCA/C
will still search the current directory before those specified
by the "path" pragma.
At this time, the only known work-around is to avoid, in your
own sources, using file names used by the system header files.
 
Continue to: