C header library is not there in /usr/include/

[sanyogita]

I have c code which is from standard source. I want to build it but as I tried I got message that signalfd is missing.
I found that code was usin <sys/signalfd.h> but it wasnt there in my /usr/include directory.
Please tell me from where to get it and hoew to add it.

[donbock]

signalfd.h is not part of Standard C -- it is part of your operating environment (that is, the operating system). What operating system is running on the computer you ran the compiler from?