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'SIGHUP','SIGTSTP' undeclared


 
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# 1  
Old 09-03-2009
'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
# 2  
Old 09-03-2009
#include <signal.h>

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