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openmpi/config/opal_check_knem.m4

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dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2009 The University of Tennessee and The University
dnl of Tennessee Research Foundation. All rights
dnl reserved.
dnl Copyright (c) 2009-2016 Cisco Systems, Inc. All rights reserved.
dnl Copyright (c) 2010-2012 IBM Corporation. All rights reserved.
dnl Copyright (c) 2014-2016 Los Alamos National Security, LLC. All rights
dnl reserved.
dnl Copyright (c) 2015 Research Organization for Information Science
dnl and Technology (RIST). All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
# OPAL_CHECK_KNEM(prefix, [action-if-found], [action-if-not-found])
# --------------------------------------------------------
# check if knem 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([OPAL_CHECK_KNEM],[
if test -z "$opal_check_knem_happy" ; then
OPAL_VAR_SCOPE_PUSH([opal_check_knem_$1_save_CPPFLAGS opal_check_knem_dir])
AC_ARG_WITH([knem],
[AC_HELP_STRING([--with-knem(=DIR)],
[Build knem Linux kernel module support, searching for headers in DIR/include])])
OPAL_CHECK_WITHDIR([knem], [$with_knem], [include/knem_io.h])
opal_check_knem_$1_save_CPPFLAGS="$CPPFLAGS"
opal_check_knem_happy=no
AS_IF([test "$with_knem" != "no"],
[AS_IF([test ! -z "$with_knem" && test "$with_knem" != "yes"],
[opal_check_knem_dir="$with_knem"])
_OPAL_CHECK_PACKAGE_HEADER([ompi_check_knem],
[knem_io.h],
[$opal_check_knem_dir],
[opal_check_knem_happy="yes"],
[])],
[])
CPPFLAGS="$CPPFLAGS $ompi_check_knem_CPPFLAGS"
# need at least version 0x0000000b
if test "$opal_check_knem_happy" = "yes" ; then
AC_PREPROC_IFELSE([AC_LANG_PROGRAM([
#include <knem_io.h>
],[
#if KNEM_ABI_VERSION < 0xc
#error "Version less than 0xc"
#endif
])],
[opal_check_knem_happy=yes],
[opal_check_knem_happy=no])
fi
CPPFLAGS="$opal_check_knem_$1_save_CPPFLAGS"
OMPI_SUMMARY_ADD([[Transports]],[[Shared memory/Linux KNEM]],[$1],[$opal_check_knem_happy])
OPAL_VAR_SCOPE_POP
fi
AS_IF([test "$opal_check_knem_happy" = "yes"],
[$1_CPPFLAGS="[$]$1_CPPFLAGS $ompi_check_knem_CPPFLAGS"
$2],
[AS_IF([test ! -z "$with_knem" && test "$with_knem" != "no"],
[AC_MSG_ERROR([KNEM support requested but not found. Aborting])])
$3])
])dnl