building on OSX with gcc 4.7 and macports dependencies

[c.]

Hi,

Building the default branch of the development sources fails for me with the 
following 
error:

------------------------------------------
/opt/local/bin/sed -e "" < ../../../octave/liboctave/cruft/slatec-fn/derfc.in.f 
> slatec-fn/derfc.f-t
/bin/sh: slatec-fn/derfc.f-t: No such file or directory
make[4]: *** [slatec-fn/derfc.f] Error 1
make[4]: *** Waiting for unfinished jobs....
mkdir: slatec-fn: File exists
make[3]: *** [all-recursive] Error 1
make[2]: *** [all] Error 2
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2
------------------------------------------

I am using gcc 4.7 compilers and macports built dependencies on OSX 10.8.
Maybe this is related to recent changes to substitution patterns?

The version of sed I have is:

------------------------------------------
$ /opt/local/bin/sed --version
/opt/local/bin/sed (GNU sed) 4.2.2
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Jay Fenlason, Tom Lord, Ken Pizzini,
and Paolo Bonzini.
GNU sed home page: <http://www.gnu.org/software/sed/>.
General help using GNU software: <http://www.gnu.org/gethelp/>.
E-mail bug reports to: <address@hidden>.
Be sure to include the word ``sed'' somewhere in the ``Subject:'' field.
------------------------------------------

Any idea how I could debug this?

c.