source: trunk/m4/efence.m4 @ 704

# Copyright (c) 2005-2008 David Carter <dcarter@arm4.org> and others.
# All rights reserved.   This program and the accompanying materials
# are made available under the terms of the Eclipse Public License v1.0
# which accompanies this distribution, and is available at
# http://www.eclipse.org/legal/epl-v10.html

# Check for the electric fence libraries

AC_DEFUN([__ARM4_EFENCE_CHECKLINK],
[
  EFENCE_LIBS="$1"
  ac_save_LIBS="$LIBS"
  LIBS="$LIBS $EFENCE_LIBS"
  AC_LINK_IFELSE([
#include <stdlib.h>

main ()
{
        void *mem_ptr;

        mem_ptr = malloc (1024);
}
], ,[EFENCE_LIBS=""])
  LIBS="$ac_save_libs"
  AC_SUBST(EFENCE_LIBS)
])

AC_DEFUN([ARM4_CHECK_EFENCE],
[
  AC_ARG_ENABLE(efence,
  [  --enable-efence         enable electric fence memory debugging],
  [
  arm4_efence=no
  __ARM4_EFENCE_CHECKLINK([-lefence])
  if test "x$EFENCE_LIBS" = "x" ; then
        AC_MSG_ERROR([this platform doesn't support efence])
  fi
  ],)
])