problem with <asm/semaphore.h>

problem with <asm/semaphore.h>

[Hossein Mobahi]

Hi

I compiled the following code with gcc under Redhat
7.2 :

#include <asm/semaphore.h>
main()
{
    struct semaphore sum;
}

It doesn't compile, saying "storage size of `sem'
isn't known".
Please guide me how to fix it.

Sincerely

--Hossein Mobahi


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Re: problem with <asm/semaphore.h>

[Shanks]

Hi Hossein,

If you look inside <asm/semaphore.h> you will see that
the definition of struct semaphore is within a 
conditional #ifdef __KERNEL__

Hence __KERNEL__ needs to be defined for this code to
compile.
Try compiling like this
$> gcc -D__KERNEL__ file.c

Regards,
Shanks

--- Hossein Mobahi <hmobahi@yahoo.com> wrote:
> Hi
> I compiled the following code with gcc under Redhat
> 7.2 :
> #include <asm/semaphore.h>
> main()
> {
>     struct semaphore sum;
> }
> 
> It doesn't compile, saying "storage size of `sem'
> isn't known".
> 
> Sincerely
> --Hossein Mobahi

__________________________________________________
Do You Yahoo!?
Yahoo! - Official partner of 2002 FIFA World Cup
http://fifaworldcup.yahoo.com

Re: problem with <asm/semaphore.h>

[bonganilinux]

I think you a trying to include a file from the linux source
which will not work for use-space apps. Try using 
#include <semaphore.h> instead 


> Hi
> 
> I compiled the following code with gcc under Redhat
> 7.2 :
> 
> #include <asm/semaphore.h>
> main()
> {
>     struct semaphore sum;
> }
> 
> It doesn't compile, saying "storage size of `sem'
> isn't known".
> Please guide me how to fix it.
> 
> Sincerely
> 
> --Hossein Mobahi
> 
> 
> __________________________________________________
> Do You Yahoo!?
> Yahoo! - Official partner of 2002 FIFA World Cup
> http://fifaworldcup.yahoo.com
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Re: problem with <asm/semaphore.h>

[Thomas 'Dent' Mirlacher]

On Tue, 4 Jun 2002 bonganilinux@mweb.co.za wrote:

> I think you a trying to include a file from the linux source
> which will not work for use-space apps. Try using 
> #include <semaphore.h> instead 

yes, sounds right, since struct semaphore in asm/semaphore will be
defined only if __KERNEL__ is defined.

	tm

-- 
in some way i do, and in some way i don't.