Re: Beginning with Kernel Extension Concepts
Re: Beginning with Kernel Extension Concepts
- Subject: Re: Beginning with Kernel Extension Concepts
- From: Francis Derive <email@hidden>
- Date: Tue, 13 Mar 2007 15:32:03 +0100
Well, I am using Xcode (2.4.1), the project was initiated with the
Assistant ( Kernel Extension/IOKit Driver ), generated this C++ file,
and I understand the compilation process is aware of the project
being C++ (where the extern "C" form is known to call for a C
construct - the included pexpert.h looks like pure C ).
So I understand this line is the way to call pure C from C++ - never
mind.
I have edited the info.plist and the HelloIOKit header file as per
the tutorial.
And I believe I am compiling C++ code.
So ... ?
On Mar 13, 2007, at 3:07 PM, Michael Crawford wrote:
Could you be compiling the code as C and not C++?
extern "C" is legal in C++, but not C.
You definitely want to compile as C++ for I/O Kit drivers.
Mike Crawford
mdcrawford at gmail dot com
On 3/13/07, Francis Derive <email@hidden> wrote:
Bonjour à tous,
From Apple Dev Documentation, I get an error : "expected
unqualified-id
before string constant" - on line 5 in the HelloIOKit.cpp file of
this
"Hello I/O Kit : Creating a Device Driver With XCode" chapter.
I stare at it and can't think anything brilliant about it.
First, I am not sure about where the error raised from : the call
to a "C "
construct, or the line before ?
//---------------------
/* add your code here */
#include <IOKit/IOLib.h>
#include "HelloIOKit.h"
extern "C" {
#include <pexpert/pexpert.h>
} // For debugging purpose only
[...]
//-------------------
Thanks.
Francis.
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