devel/autoconf fails to build on MacOS X

[Georg Schwarz <georg.schwarz%freenet.de@localhost>]

devel/autoconf fails to build on MacOS 10.4.11 (PPC):

cd ../lib/m4sugar && /Users/schwarz/pkg/bin/bmake  version.m4
:;{  echo '# This file is part of -*- Autoconf -*-.' &&  echo '#  
Version of Autoconf.' &&  echo '# Copyright (C) 1999, 2000, 2001,  
2002, 2006, 2007' &&  echo '# Free Software Foundation, Inc.' &&   
echo  && echo 'm4_define([m4_PACKAGE_NAME],      [GNU Autoconf])' &&   
echo 'm4_define([m4_PACKAGE_TARNAME],   [autoconf])' &&  echo  
'm4_define([m4_PACKAGE_VERSION],   [2.63])' &&  echo 'm4_define 
([m4_PACKAGE_STRING],    [GNU Autoconf 2.63])' &&  echo 'm4_define 
([m4_PACKAGE_BUGREPORT], [bug-autoconf%gnu.org@localhost])';  } > version.m4-t
mv version.m4-t version.m4
autom4te_perllibdir='..'/lib                                      
AUTOM4TE_CFG='../lib/autom4te.cfg'         ../bin/autom4te      -B  
'..'/lib -B '..'/lib --language M4sh --cache '' --melt ./autoconf.as - 
o autoconf.in
autoconf.as:1: /usr/bin/gm4: Warning: Excess arguments to built-in  
`_m4_popdef' ignored
autom4te: /usr/bin/gm4 failed with exit status: 1
*** Error code 1

Stop.

are other versions of MacOS also affected?
When I install devel/gm4 and build devel/automake with the M4  
environment variable set accordingly things work nicely.
Do you think it would be a good idea to enfore this on MacOS X for  
building devel/autoconf?


--
Georg Schwarz    http://home.pages.de/~schwarz/
georg.schwarz%freenet.de@localhost  +49 151 11559652