Per the discussion on email thread:

http://www.open-mpi.org/community/lists/devel/2013/12/13552.php

Patch configure for issues in NetBSD libtool

Thanks to Paul Hargrove for identifying the problem and providing the patch

cmr=v1.7.4:reviewer=jsquyres:subject=Patch configure for issues in NetBSD libtool

This commit was SVN r30096.

autogen.pl

@@ -969,6 +969,9 @@ sub patch_autotools_output {
     verbose "$indent_str"."Patching configure for IBM xlf libtool bug\n";
     $c =~ s/(\$LD -shared \$libobjs \$deplibs \$)compiler_flags( -soname \$soname)/$1linker_flags$2/g;
 
+    verbose "$indent_str"."Patching configure for Libtool setting of dir variable\n";
+    $c =~ s/( +)(ECHO="\$dir\/echo")/\1\2\n\1unset dir/;
+
     open(OUT, ">configure.patched") || my_die "Can't open configure.patched";
     print OUT $c;
     close(OUT);