Very Computer

Hi all,

I've a program using the kill function, which, according to my man page, is
prototyped in <signal.h> and also needs <sys/types.h>.  So, I include these
headers in my program.  Compiling as follows, the preprocessor complains:

$ gcc -g -Wall -ansi -pedantic-errors    killer.c   -o killer
killer.c: In function `main':
killer.c:27: warning: implicit declaration of function `kill'

My gcc is
$ gcc -v
Reading specs from /usr/lib/gcc-lib/i386-linux/egcs-2.91.66/specs
gcc version egcs-2.91.66 19990314 (egcs-1.1.2 release)

I'm kinda confused.  Thanks for any hints.

Kurt
--
A diplomat is man who always remembers a woman's birthday but never her age.
                -- Robert Frost

Quote:>Hi all,

>I've a program using the kill function, which, according to my man page, is
>prototyped in <signal.h> and also needs <sys/types.h>.  So, I include these
>headers in my program.  Compiling as follows, the preprocessor complains:

>$ gcc -g -Wall -ansi -pedantic-errors    killer.c   -o killer
>killer.c: In function `main':
>killer.c:27: warning: implicit declaration of function `kill'

>My gcc is
>$ gcc -v
>Reading specs from /usr/lib/gcc-lib/i386-linux/egcs-2.91.66/specs
>gcc version egcs-2.91.66 19990314 (egcs-1.1.2 release)

>I'm kinda confused.  Thanks for any hints.

>Kurt

Hmm. Taking a peek at the signal.h header, it looks like
you might want to add a -D__USE_POSIX to your call to gcc.
That should get you the prototype you want.

Hope that helps,
Jeff Raven

Quote:> Hi all,

> I've a program using the kill function, which, according to my man page, is
> prototyped in <signal.h> and also needs <sys/types.h>.  So, I include these
> headers in my program.  Compiling as follows, the preprocessor complains:

> $ gcc -g -Wall -ansi -pedantic-errors    killer.c   -o killer
> killer.c: In function `main':
> killer.c:27: warning: implicit declaration of function `kill'

> My gcc is
> $ gcc -v
> Reading specs from /usr/lib/gcc-lib/i386-linux/egcs-2.91.66/specs
> gcc version egcs-2.91.66 19990314 (egcs-1.1.2 release)

> I'm kinda confused.  Thanks for any hints.

kill() is not an ANSI C function, and you just told gcc that you
want ANSI C.

//Marcus
--
-------------------------------+------------------------------------
        Marcus Sundberg        | http://www.stacken.kth.se/~mackan
 Royal Institute of Technology |       Phone: +46 707 295404