From: Lyle Johnson <lyle@...>
Date: 2002-08-16T02:15:04+09:00
Subject: Re: FXRuby on Solaris 9

Berger, Daniel wrote:

> Well, I obviously picked a bad week to quit sniffing glue.  I had modified
> the wrong intern.h file!

A good "Airplane" quote always helps to lift one's spirits ;)

> Once I did that, I got further, but am now stuck with this:
> 
> opengl_wrap.cpp: In function `VALUE FXGLViewer_readPixels(FXGLViewer*, int,
> int, int, int)':
> opengl_wrap.cpp:677: `alloca' undeclared (first use this function)
> opengl_wrap.cpp:677: (Each undeclared identifier is reported only once 
> for each function it appears in.)
> gmake: *** [opengl_wrap.o] Error 1
> setup failed
> 'system gmake' failed
> try 'ruby install.rb --help' for usage
> 
> I didn't see this one mentioned in the docs

No, that's a new one for me too. That line of opengl_wrap.cpp is making 
use of the macro ALLOCA_N which is defined in "ruby.h", but the macro 
just turns around and calls the alloca() function (a semi-standard C 
library function). And for *some* reason it hasn't seen a declaration of 
alloca() by that point in the compilation.

Let's see, what would be good to know...

When it's compiling this file (opengl_wrap.cpp) do you see 
"-DHAVE_ALLOCA_H" in the compiler flags?