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openmpi/config/ompi_fortran_check_bind_c_logical.m4

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dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
dnl University Research and Technology
dnl Corporation. All rights reserved.
dnl Copyright (c) 2004-2005 The University of Tennessee and The University
dnl of Tennessee Research Foundation. All rights
dnl reserved.
dnl Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
dnl University of Stuttgart. All rights reserved.
dnl Copyright (c) 2004-2005 The Regents of the University of California.
dnl All rights reserved.
dnl Copyright (c) 2010-2013 Cisco Systems, Inc. All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
# Per https://svn.open-mpi.org/trac/ompi/ticket/3523 and
# http://lists.mpi-forum.org/mpi-comments/2013/02/0076.php, the
# Fortran compiler may not support default LOGICAL parameters with
# BIND(C). OMPI's F08 bindings currently require this.
#
# So at least for the moment, test to see if the compiler allows
# default LOGICAL parameters with BIND(C).
# OMPI_FORTRAN_CHECK_BIND_C_LOGICAL([action if found], [action if not found])
# ----------------------------------------------------
AC_DEFUN([OMPI_FORTRAN_CHECK_BIND_C_LOGICAL],[
AS_VAR_PUSHDEF([bind_c_var], [ompi_cv_fortran_bind_c_likes_logical])
AC_CACHE_CHECK([if Fortran compiler supports BIND(C) with LOGICAL params], bind_c_var,
[AC_LANG_PUSH([Fortran])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[module bindc_logical
use, intrinsic :: iso_c_binding
interface
subroutine foo(flag) bind(c)
logical :: flag
end subroutine foo
end interface
end module bindc_logical]])],
[AS_VAR_SET(bind_c_var, yes)],
[AS_VAR_SET(bind_c_var, no)])
AC_LANG_POP([Fortran])
])
AS_VAR_IF(bind_c_var, [yes], [$1], [$2])
AS_VAR_POPDEF([bind_c_var])dnl
])