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#############################################################################
# Copyright (c) 2016 Balabit
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# As an additional exemption you are allowed to compile & link against the
# OpenSSL libraries as published by the OpenSSL project. See the file
# COPYING for details.
#
#############################################################################
# origin: http://www.opensource.apple.com/source/libarchive/libarchive-32.10.1/libarchive/build/cmake/CheckStructMember.cmake?txt
# - Check if the given struct or class has the specified member variable
# CHECK_STRUCT_MEMBER (STRUCT MEMBER HEADER VARIABLE)
#
# STRUCT - the name of the struct or class you are interested in
# MEMBER - the member which existence you want to check
# HEADER - the header(s) where the prototype should be declared
# VARIABLE - variable to store the result
#
# The following variables may be set before calling this macro to
# modify the way the check is run:
#
# CMAKE_REQUIRED_FLAGS = string of compile command line flags
# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
# CMAKE_REQUIRED_INCLUDES = list of include directories
# Copyright (c) 2006, Alexander Neundorf, <neundorf@kde.org>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
INCLUDE(CheckCSourceCompiles)
MACRO (CHECK_STRUCT_MEMBER _STRUCT _MEMBER _HEADER _RESULT)
SET(_INCLUDE_FILES)
FOREACH (it ${_HEADER})
SET(_INCLUDE_FILES "${_INCLUDE_FILES}#include <${it}>\n")
ENDFOREACH (it)
SET(_CHECK_STRUCT_MEMBER_SOURCE_CODE "
${_INCLUDE_FILES}
int main()
{
static ${_STRUCT} tmp;
if (sizeof(tmp.${_MEMBER}))
return 0;
return 0;
}
")
CHECK_C_SOURCE_COMPILES("${_CHECK_STRUCT_MEMBER_SOURCE_CODE}" ${_RESULT})
ENDMACRO (CHECK_STRUCT_MEMBER)
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