Sorry if this is the wrong ML for MPE-related stuff... In this commit http://git.mpich.org/mpe.git/commit/dfab46405ec728e2d6b7fe5b2696839e5aed921b you are generating bad test code (it will always fail), it looks like (check yourself configure logs for the exact code): #include "mpi.h" int main() { MPI_Init(...); int MPI_Send(... ) { return 0;} // Wrong!! function inside function MPI_Finalize(); } The following trivial patch (I've also attached it) works for me, but I'm not sure you will like it. diff --git a/src/wrappers/configure.ac b/src/wrappers/configure.ac index e504488..a5e3e45 100644 --- a/src/wrappers/configure.ac +++ b/src/wrappers/configure.ac @@ -336,14 +336,16 @@ dnl Check if MPI implementation uses const in function declaration if test "$MPI_IMPL" != "MPICH" -a "$MPI_IMPL" != "MPICH2" ; then if test "$enable_checkMPI" = "yes" ; then AC_MSG_CHECKING( [for the use of const in MPI function declaration] ) - PAC_MPI_COMPILE_CC_FUNC( $MPI_CC, [$MPI_CFLAGS], [], [], + PAC_MPI_COMPILE_CC_FUNC( $MPI_CC, [$MPI_CFLAGS], [ +#include "mpi.h" int MPI_Send(const void *buf, int count, MPI_Datatype datatype, int dest, int tag, MPI_Comm comm) { return 0; } ], + [], [], [ mpe_link_ok=yes ], [ mpe_link_ok=no ] ) if test "$mpe_link_ok" = "yes" ; then AC_MSG_RESULT(yes) -- Lisandro Dalcin --------------- CIMEC (UNL/CONICET) Predio CONICET-Santa Fe Colectora RN 168 Km 472, Paraje El Pozo 3000 Santa Fe, Argentina Tel: +54-342-4511594 (ext 1016) Tel/Fax: +54-342-4511169