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From: amoss@SHUM.HUJI.AC.IL (Amos Shapira)
Newsgroups: comp.sys.sgi
Subject: Black Magic: __EXTENSIONS__
Message-ID: <amoss.656923801@shum>
Date: 26 Oct 90 06:50:01 GMT
Sender: usenet@ucbvax.BERKELEY.EDU
Distribution: comp
Organization: The Hebrew University of Jerusalem, Israel
Lines: 17

Hello,
 While installin GCC 1.37.1 on Iris 4D under Irix 3.3, I found that
 programs which refference sys_siglist compile and resolve this
 refference when compiled by the regular cc and not when compiled with
 GCC. When I #define __EXTENSIONS__ and include <signal.h> things work
 O.K. cc(1) doesn't define it when calling cpp (from running "cc -v").
 And it seems that cpp define this internally.

 I didn't find any mention of sys_siglist under /usr/include/*.h nor
 under /usr/include/sys/*.h. Also the only refferences in /usr/lib
 describe sys_siglist as an external symbol, none of them define it.

 What happens here?

Thanks in advance,
Amos Shapira
amoss@batata.huji.ac.il