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) 2004-2018 High Performance Computing Center Stuttgart,
dnl                         University of Stuttgart.  All rights reserved.
dnl Copyright (c) 2004-2006 The Regents of the University of California.
dnl                         All rights reserved.
dnl Copyright (c) 2018      University of Houston. All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl

# OMPI_CHECK_GPFS(prefix, [action-if-found], [action-if-not-found])
# --------------------------------------------------------
# check if GPFS support can be found.  sets prefix_{CPPFLAGS,
# LDFLAGS, LIBS} as needed and runs action-if-found if there is
# support, otherwise executes action-if-not-found
AC_DEFUN([OMPI_CHECK_GPFS],[

    check_gpfs_CPPFLAGS=
    check_gpfs_LDFLAGS=
    check_gpfs_LIBS=

    check_gpfs_save_LIBS="$LIBS"
    check_gpfs_save_LDFLAGS="$LDFLAGS"
    check_gpfs_save_CPPFLAGS="$CPPFLAGS"

    check_gpfs_configuration="none"
    ompi_check_gpfs_happy="yes"

    # Get some configuration information
    AC_ARG_WITH([gpfs],
        [AC_HELP_STRING([--with-gpfs(=DIR)],
             [Build Gpfs support, optionally adding DIR/include, DIR/lib, and DIR/lib64 to the search path for headers and libraries])])
    OPAL_CHECK_WITHDIR([gpfs], [$with_gpfs], [include/gpfs.h])

    AS_IF([test "$with_gpfs" = "no"],
        [ompi_check_gpfs_happy="no"],
        [AS_IF([test -z "$with_gpfs" || test "$with_gpfs" = "yes"],
                [ompi_check_gpfs_dir="/usr"],
                [ompi_check_gpfs_dir=$with_gpfs])
            
            if test -e "$ompi_check_gpfs_dir/lib64" ; then
                ompi_check_gpfs_libdir="$ompi_check_gpfs_dir/lib64"
            else
                ompi_check_gpfs_libdir="$ompi_check_gpfs_dir/lib"
            fi
            
            # Add correct -I and -L flags
            OPAL_CHECK_PACKAGE([$1], [gpfs.h], [gpfs], [gpfs_lib_init], 
                [], [$ompi_check_gpfs_dir], [$ompi_check_gpfs_libdir], 
                [ompi_check_gpfs_happy="yes"],
                [ompi_check_gpfs_happy="no"])
  ])          

    AS_IF([test "$ompi_check_gpfs_happy" = "yes"],
          [$2],
          [AS_IF([test ! -z "$with_gpfs" && test "$with_gpfs" != "no"],
                 [AC_MSG_ERROR([GPFS support requested but not found.  Aborting])])
           $3])
])