Help on Compiling Emacs on AIX (RS6000)

[Vic Abell]

In article <9010092106.AA22112 at nth.com> lowe at nthropy.UUCP (Andy Lowe) writes:
>
>yzhao at hermes.cs.uh.edu writes:
>
>the posting:
>	 use of alloca and optimization under XL C on AIX 3.1
>by abe at mace.cc.purdue.edu (Vic Abell)
>in this newsgroups seems to report a similar problem.

This may not be a similar problem.  The official solution to the absence
of alloca() is to use

	#pragma	alloca

instead.  (See the BSD porting guide in /usr/lpp/bsdport.)  My problem
was that, while the #pragma worked with no CC optimization or with debug
(-g) mode, I couldn't get it to work when I used optimization (-O).  I
don't yet have an answer to that paradox.