Hi, sorry to chime in so late. Jeff you may remember that I reported a similar problem to open-mpi some years ago. But I didn't use CFLAGS=-m32 but CC="gcc -m32" and CXX="g++ -m32", which is still in my eyes the correct way to pass this flag to all compile commands. The problem in open-mpi back than was, that configure didn't handled the CC variable with spaces well. I haven't read the whole #35 thread through, but just wanted to let you know.
Bye Bert
