Hello,
I'm replying to this thread I found in the archive: http://www.cs.unipr.it/pipermail/ppl-devel/2009-August/015195.html since I was hit by the same error while trying to build PPL under Solaris 10/Sparc with gcc 4.5.1. It does not seem to be solved because in Version 0.11 of PPL the same error occurs nor could I find a solution, so I had to look myself. It turned out the the problem is related to sed. With Solaris' sed it does not work, but with GNU sed it works. So it does not seem to be related to autoreconf, perl, m4 or awk. Unfortunately I was not able to find out which sed command behaves differently. Maybe it would be a good idea to search for and use GNU sed in configure.
Regards,
Peter
ps: I'm not subscribed, so if you want me to do anything for this issue (like testing or something) please reply to me directly