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AC_DEFUN([ACX_MPI], [
# We were using the full macro from ACX but this forced AC_PROG_C or AC_PROG_CXX to
# be run before we had overridden the compilers which meant that some confdef.h
# entries were incorrect (specifically std::exit problem with PGI)
# Disable MPI C++ bindings.
CPPFLAGS="$CPPFLAGS -DMPICH_SKIP_MPICXX=1 -DOMPI_SKIP_MPICXX=1"
AC_ARG_VAR(MPICC,[MPI C compiler command])
AC_CHECK_PROGS(MPICC, mpicc hcc mpcc mpcc_r mpxlc cmpicc, $CC)
acx_mpi_save_CC="$CC"
CC="$MPICC"
AC_SUBST(MPICC)
AC_ARG_VAR(MPICXX,[MPI C++ compiler command])
AC_CHECK_PROGS(MPICXX, mpicxx mpic++ mpiCC mpCC hcp mpxlC mpxlC_r cmpic++, $CXX)
acx_mpi_save_CXX="$CXX"
CXX="$MPICXX"
AC_SUBST(MPICXX)
#AC_ARG_VAR(MPIF77,[MPI Fortran compiler command])
#AC_CHECK_PROGS(MPIF77, mpif77 hf77 mpxlf mpf77 mpif90 mpf90 mpxlf90 mpxlf95 mpxlf_r cmpifc cmpif90c, $F77)
#acx_mpi_save_F77="$F77"
#F77="$MPIF77"
#AC_SUBST(MPIF77)
])
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