HP aC++/HP C A.06.25 Programmer's Guide

NOTE: Some of the compiler’s header files are included using double quotes. Since
the -I- option redefines the search order of such includes, if any standard headers are
used, it is your responsibility to supply the standard include directories (/opt/aCC/
include* and /usr/include) in the correct order in your -I- command line.
For example, when using -I- on the aCC command line, any specified -I directory
containing a quoted include file having the same name as an HP-UX system header
file, may cause the following possible conflict.
In general, if your application includes no header having the same name as an HP-UX
system header, there is no chance of a conflict.
Suppose you are compiling program a.C with view-pathing on. a.C includes the file
a.out.h which is a system header in /usr/include:
aCC -IDevelopmentDir -I- -IOfficialDir a.C
If a.C contains:
// This is the file a.C
#include <a.out.h>
// ...
When a.out.h is preprocessed from the /usr/include directory, it includes other
files that are quote included (like #include "filehdr.h").
Since with view-pathing, quote enclosed headers are not searched for in the including
file’s directory, filehdr.h which is included by a.out.h will not be searched for in
a.out.h’s directory (/usr/include).
Instead, for the above command line, the system header is first searched for in
DevelopmentDir, then in OfficialDir and if it is found in neither, it is finally
searched for in the standard include directories, /opt/aCC/include* and /usr/
include, in the latter of which it will be found.
However, if you have a file named filehdr.h in DevelopmentDir or OfficialDir,
that file (the wrong file) will be found.
Online Help Option
Use the +help option to view the HP aC++ Online Help.
+help
+help
The +help option invokes the initial menu window of this HP aC++ Online Help.
If +help is used on any command line, the compiler displays the HP aC++ Online Help
with the default web browser and then processes any other arguments.
60 Command-Line Options