Path: utzoo!attcan!uunet!lupine!djm
From: djm@lupine.UUCP (Dave Mackie)
Newsgroups: comp.windows.x
Subject: Re: Problem with R3 make Sun4, SunOS 3.2
Summary: How to resolve alloca() on SUN-4
Message-ID: <169@lupine.UUCP>
Date: 7 Feb 89 20:07:39 GMT
References: <8902062135.AA04548@mbunix.mitre.org>
Organization: Network Computing Devices
Lines: 32

In article <8902062135.AA04548@mbunix.mitre.org>, jpfo@mbunix (Otin) writes:
> 
> Have an undefined problem, alloca, when making World and install.
> Could someone forward to me, as we are stuck in our installation on
> Sun4 with SunOS 3.2 of Xv11r3.


	If you are building X11 R3 on a SUN-4 then you want to be sure to
	check that the file /mumble/x11r3/util/imake.includes/Sun.macros
	has the correct definitions of OSMajorVersion and OSMinorVersion.
	Later in the Sun.macros file the following happens:

	/* define this as you like for server compilation */
	#if SunOSPlatform && OSMajorVersion >= 4
	#define ServerDefines SunWindowsDefines -DINCLUDE_ALLOCA_H
	#else
	#define ServerDefines SunWindowsDefines
	#endif

	The -DINCLUDE_ALLOCA_H causes /usr/include/alloca.h to be included
	when compiling. This file (for a reason someone from SUN would have
	to explain) changes alloca(x) to a call to __builtin_alloca(x)
	when you're compiling on a SPARC architecture.

	Note: the Sun.macros file implies that this fix is only needed if
	you're running SUNOS 4.0 or greater, but you said you were running
	SUNOS 3.2. My guess is that either the Sun.macros file didn't know
	about the SUN-4 version of 3.2 which also needs the alloca fix or
	that someone slipped 4.0 onto your system :-).

						Dave Mackie
						Network Computing Devices