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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) 2010-2014 Cisco Systems, Inc. All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
# Check whether or not the Fortran compiler supports the "optional"
# keyword or not.
# OMPI_FORTRAN_CHECK_OPTIONAL_ARGS([action if found],
# [action if not found])
# ----------------------------------------------------
AC_DEFUN([OMPI_FORTRAN_CHECK_OPTIONAL_ARGS],[
AS_VAR_PUSHDEF([optional_var], [ompi_cv_fortran_optional])
AC_CACHE_CHECK([if Fortran compiler supports optional arguments], optional_var,
[AC_LANG_PUSH([Fortran])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[program check_for_optional
use, intrinsic :: iso_c_binding
interface
subroutine check_op(i, ierror)
integer, intent(in), value :: i
integer, intent(out), optional :: ierror
end subroutine check_op
end interface
integer :: ierror
call check_op(0)
call check_op(1, ierror)
end program]])],
[AS_VAR_SET(optional_var, yes)],
[AS_VAR_SET(optional_var, no)])
AC_LANG_POP([Fortran])
])
AS_VAR_IF(optional_var, [yes], [$1], [$2])
AS_VAR_POPDEF([optional_var])dnl
])
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