Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.windows.x
Subject: Re: xrooms on Sun4 OS 4.0.3 does not compile
Message-ID: <3887@auspex.auspex.com>
Date: 14 Aug 90 18:22:13 GMT
References: <FELIX.90Aug13164236@cayucos.ai.sri.com>
Organization: Auspex Systems, Santa Clara
Lines: 23

>ld: Undefined symbol
>   _alloca
>*** Error code 1
>make: Fatal error: Command failed for target `xrooms'
>
>Any idea where is this symbol defined?

"/usr/include/alloca.h":

	/*	@(#)alloca.h	1.3	88/02/07	SMI	*/
	#if defined(sparc)
	# define alloca(x) __builtin_alloca(x)
	#endif

Basically, you need to find those source files that call "alloca" and
put in something like

	#ifdef sparc
	#include <alloca.h>
	#endif

at the front of them.  Be warned that some other compilers also need
assistance in coping with "alloca"....