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openmpi/config/opal_check_cma.m4
Jeff Squyres 6800ef9ec0 m4: rename OMPI_SUMMARY_* macros to OPAL_SUMMARY_*
These macros should really be named OPAL_SUMMARY_*; they're used in
all projects, and therefore should be in the lowest later project (OPAL).

Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
2016-04-20 08:40:00 -07:00

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# -*- shell-script -*-
#
# Copyright (c) 2009 The University of Tennessee and The University
# of Tennessee Research Foundation. All rights
# reserved.
# Copyright (c) 2009-2016 Cisco Systems, Inc. All rights reserved.
# Copyright (c) 2010-2012 IBM Corporation. All rights reserved.
# Copyright (c) 2013-2016 Los Alamos National Security, LLC. All rights
# reserved.
# $COPYRIGHT$
#
# Additional copyrights may follow
#
# $HEADER$
#
# OPAL_CHECK_CMA(prefix, [action-if-found], [action-if-not-found])
# --------------------------------------------------------
# check if cma support is wanted.
AC_DEFUN([OPAL_CHECK_CMA],[
if test -z "$ompi_check_cma_happy" ; then
OPAL_VAR_SCOPE_PUSH([ompi_check_cma_need_defs ompi_check_cma_kernel_version])
ompi_check_cma_happy="no"
AC_ARG_WITH([cma],
[AC_HELP_STRING([--with-cma],
[Build Cross Memory Attach support (default: no)])])
# Enable CMA support by default if process_vm_readv is defined in glibc
AC_CHECK_FUNC(process_vm_readv, [ompi_check_cma_need_defs=0],
[ompi_check_cma_need_defs=1])
# If the user specifically requests CMA go ahead and enable it even
# if the glibc version does not support process_vm_readv
if test $ompi_check_cma_need_defs = 0 || test "x$with_cma" = "xyes" ; then
ompi_check_cma_happy="yes"
AC_DEFINE_UNQUOTED([OPAL_CMA_NEED_SYSCALL_DEFS],
[$ompi_check_cma_need_defs],
[Need CMA syscalls defined])
AC_CHECK_HEADERS([sys/prctl.h])
fi
OPAL_VAR_SCOPE_POP
OPAL_SUMMARY_ADD([[Transports]],[[Shared memory/Linux CMA]],[$1],[$ompi_check_cma_happy])
fi
AS_IF([test "$ompi_check_cma_happy" = "yes"], [$2], [$3])
])