Sparc DFLDSIZ

[Marco S Hyman <marc@snafu.org>]

A make build on my sparc fails building lynx since the conversion to
egcs.  It's an out-of-virtual-memory failure that is resolved by
doing a "ulimit -S -d 65536" (I use ksh).  Now 64 Mbytes may be
more than is needed, but the default 16 clearly isn't enough.

Looking at vmparam.h for the sparc I see:

#ifndef MAXTSIZ
#define	MAXTSIZ		(16*1024*1024)		/* max text size */
#endif
#ifndef DFLDSIZ
#define	DFLDSIZ		(16*1024*1024)		/* initial data size limit */
#endif
#ifndef MAXDSIZ
#define	MAXDSIZ		(128*1024*1024)		/* max data size */
#endif
#ifndef	DFLSSIZ
#define	DFLSSIZ		(512*1024)		/* initial stack size limit */
#endif
#ifndef	MAXSSIZ
#define	MAXSSIZ		MAXDSIZ			/* max stack size */
#endif

Is there any reason why DFLDSIZ couldn't be bumped up to 32 Meg?  I
do not pretend to understand what might be affected by doing this.

Also, for my information, why are these numbers so low when compared to
something like the i386.  An RTFM pointer would be appreciated.

// marc