gtkglextmm on Windows

[Bruce Sherwood <Bruce_Sherwood ncsu edu>]

(I thought I'd sent this note a day or more ago, but it hasn't shown up 
on the list; I apologize should this show up twice.)

I'm trying to build gtkglextmm on Windows from source using MinGW. 
There's a binary installer for gtkglext, but not for gtkglextmm, alas. I 
thought I had previously succeeded in building on another Windows 
machine starting from ./configure --prefix=/mingw, but now I get 
"g++.exe: : No such file or directory" in the first phase, compiling in 
tools/extra_defs_gen.

I found instructions on building both gtkglext and gtkglextmm from source:

http://www.mail-archive.com/gtkglext-list gnome org/msg00213.html

The text describing building gtkglextmm is unfortunately a bit garbled. 
Also, it says there's an error in line 113 of the Makefile, an extra 
space in "LDFLAGS = -L /gtk/lib". At my line 113 I just see "LDFLAGS = 
". I don't know how to proceed.

Can anyone give me advice on this? If it would be useful, I can supply 
config.log and the output of make -d.

It would be very nice if gtkglext and gtkglextmm were simply included in 
gtk and gtkmm.

Bruce Sherwood