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Top Forums Programming 'SIGHUP','SIGTSTP' undeclared Post 302350127 by konvalo on Wednesday 2nd of September 2009 10:35:49 PM
Old 09-02-2009
'SIGHUP','SIGTSTP' undeclared

I compile following statement
Code:
signal(SIGHUP,sig_hup);
kill(getpid(),SIGTSTP);

$gcc test.c
it raise following error:
error:'SIGHUP' undeclared (first use in this function)
error:'SIGTSTP' undeclared (first use in this function)

Why raise above error? which head file include 'SIGHUP','SIGTSTP' define?

Thanks
 

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RAISE(3)						     Linux Programmer's Manual							  RAISE(3)

NAME
raise - send a signal to the caller SYNOPSIS
#include <signal.h> int raise(int sig); DESCRIPTION
The raise() function sends a signal to the calling process or thread. In a single-threaded program it is equivalent to kill(getpid(), sig); In a multithreaded program it is equivalent to pthread_kill(pthread_self(), sig); If the signal causes a handler to be called, raise() will only return after the signal handler has returned. RETURN VALUE
raise() returns 0 on success, and nonzero for failure. CONFORMING TO
C89, C99, POSIX.1-2001. SEE ALSO
getpid(2), kill(2), sigaction(2), signal(2), pthread_kill(3), signal(7) COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
2008-10-17 RAISE(3)
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