#=============================================================================

# Copyright 2010 Alexander Neundorf <neundorf@kde.org>

#

# 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 Kitware, Inc., the Insight Consortium, or the names of

#    any consortium members, or of any 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 HOLDER 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 AUTHORS 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.

#=============================================================================

# AWI, downloaded from KDE repository since has not yet been transferred

# to cmake repository as of 2006-07-31.

# http://websvn.kde.org/trunk/KDE/kdelibs/cmake/modules/CheckPrototypeExists.cmake?rev=505849&view=markup

#

# - Check if the prototype for a function exists.

# CHECK_PROTOTYPE_EXISTS (FUNCTION HEADER VARIABLE)

#

#  FUNCTION - the name of the function you are looking for

#  HEADER - the header(s) where the prototype should be declared

#  VARIABLE - variable to store the result

#

INCLUDE(CheckCXXSourceCompiles)

MACRO(CHECK_PROTOTYPE_EXISTS _SYMBOL _HEADER _RESULT)

   SET(_INCLUDE_FILES)

   FOREACH(it ${_HEADER})

      SET(_INCLUDE_FILES "${_INCLUDE_FILES}#include <${it}>\n")

   ENDFOREACH(it)

   SET(_CHECK_PROTO_EXISTS_SOURCE_CODE "

${_INCLUDE_FILES}

void cmakeRequireSymbol(int dummy,...){(void)dummy;}

int main()

{

#ifndef ${_SYMBOL}

#ifndef _MSC_VER

  cmakeRequireSymbol(0,&${_SYMBOL});

#else

  char i = sizeof(&${_SYMBOL});

#endif

#endif

  return 0;

}

")

   CHECK_CXX_SOURCE_COMPILES("${_CHECK_PROTO_EXISTS_SOURCE_CODE}" ${_RESULT})

ENDMACRO(CHECK_PROTOTYPE_EXISTS _SYMBOL _HEADER _RESULT)