OK, I installed an isolated 2.13 and it works as expected. I guess I'll keep it around for GRASS.
I updated configure[.in] + some makefiles in dev6 branch so that configure + compile works on OSX for a 64bit build with a 32bit TclTk Aqua.
Configure was a bit messy, since the saving of LDFLAGS happens within the AC test macro.
On May 23, 2009, at 12:06 PM, Glynn Clements wrote:
Later versions aren't backwards compatible.
2.13 was the last version before autotools degenerated into an
incomprehensible mess.
On May 23, 2009, at 9:15 AM, William Kyngesburye wrote:
I could try installing autoconf 2.13 in a sandbox, so it leaves Xcode alone...
On May 23, 2009, at 3:35 AM, Markus Neteler wrote:
On Sat, May 23, 2009 at 5:40 AM, William Kyngesburye
<woklist@kyngchaos.com> wrote:
There's only the 2.61 from Xcode. Is that 2.13 an absolute requirement or a
minimum? I don't see why a newer autoconf shouldn't support an older
configure.in.
Because it is autoconf 
I tried the more complete sequence of aclocal/autoheader/automake/autoconf,
but got a bunch of missing template warnings in autoheader.
I darkly remember that I made tests with 2.51 but quickly gave up.
2.13 seems to be an absolute requirement.
Markus
-----
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
http://www.kyngchaos.com/
"Mon Dieu! but they are all alike. Cheating, murdering, lying, fighting, and all for things that the beasts of the jungle would not deign to possess - money to purchase the effeminate pleasures of weaklings. And yet withal bound down by silly customs that make them slaves to their unhappy lot while firm in the belief that they be the lords of creation enjoying the only real pleasures of existence....
- the wisdom of Tarzan