[SATLUG] Linux programming question

[Julian Peterson]

On Thursday 14 July 2005 10:30 am, David Salisbury wrote:
> So I'm trying to compile ClanLib, and getting an error, and after
> testing a few things have narrowed my problem down to a particular
> #include line and wrote a quick little C program to test my theory. 
[...]
>
> If I compile that with gcc, it compiles just fine, no complaints. 
> HOWEVER, if I compile it with g++ or c++ I get the following error:
>
> <error>
>
> In file included from /usr/include/linux/spinlock.h:6,
>                  from /usr/include/linux/module.h:11,
>                  from /usr/include/linux/joystick.h:33,
>                  from dave.c:2:
> /usr/include/asm/system.h:244: error: syntax error before `new'
[...]
>
> Why would g++ or c++ have a problem compiling this, and not gcc?  It
> must have something to do with C++ handling this all differently, but
> I'm not sure how (although a little googling seemed to point to
> something regarding user space and kernel space but I am still at a
> loss at the moment). Anyway, it's a problem, because ClanLib is
> compiling with g++ and breaks down when it gets to the point where it
> #includes the <linux/joystick.h> headers.
>

It compiled fine for me (gcc 4 & kernel 2.6.11).  

You're getting the error perhaps because they're using "new" as a variable 
name.  That's fine in C, but it's a reserved word in C++.

You could try upgrading your kernel headers if at all possible (since the 
current ones seem ok).  Also, just check to see if ClanLib requires any 
particular kernel version.


Julian.

-- 
Nothing is ever a total loss; it can always serve as a bad example.