ax_debug.m4

# ===========================================================================
#      https://github.com/BrianAker/ddm4/
# ===========================================================================
#
# SYNOPSIS
#
#   AX_DEBUG()
#
# DESCRIPTION
#
#   --enable-debug
#
# LICENSE
#
#  Copyright (C) 2012 Brian Aker
#  All rights reserved.
#  
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions are
#  met:
#  
#      * Redistributions of source code must retain the above copyright
#  notice, this list of conditions and the following disclaimer.
#  
#      * Redistributions in binary form must reproduce the above
#  copyright notice, this list of conditions and the following disclaimer
#  in the documentation and/or other materials provided with the
#  distribution.
#  
#      * The names of its contributors may not be used to endorse or
#  promote products derived from this software without specific prior
#  written permission.
#  
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
#  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
#  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
#  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
#  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
#  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#serial 6.1

AC_DEFUN([AX_DEBUG],
    [AC_PREREQ([2.63])dnl
    AC_ARG_ENABLE([debug],
      [AS_HELP_STRING([--enable-debug],
        [Add debug code/turns off optimizations (yes|no) @<:@default=no@:>@])],
      [ax_enable_debug=$enableval],
      [ax_enable_debug=no])

	AS_IF([test "x$ax_enable_debug" != "xno"],
		[AC_DEFINE([DEBUG],[1],[Define to 1 to enable debugging code.])],
		[AC_SUBST([MCHECK])
         AC_DEFINE([DEBUG],[0],[Define to 1 to enable debugging code.])])

    AC_MSG_CHECKING([for debug])
    AC_MSG_RESULT([$ax_enable_debug])
    AM_CONDITIONAL([DEBUG],[test "x${ax_enable_debug}" = xyes])])