1 files changed, 51 insertions, 0 deletions
diff --git a/Modules/CheckStructHasMember.cmake b/Modules/CheckStructHasMember.cmake
new file mode 100644
index 000000000..18e80e3c0
--- /dev/null
+++ b/Modules/CheckStructHasMember.cmake
@@ -0,0 +1,51 @@
+# - Check if the given struct or class has the specified member variable
+# CHECK_STRUCT_HAS_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
+#
+# Example: CHECK_STRUCT_HAS_MEMBER("struct timeval" tv_sec sys/select.h HAVE_TIMEVAL_TV_SEC)
+
+#=============================================================================
+# Copyright 2007-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+INCLUDE(CheckCSourceCompiles)
+
+MACRO (CHECK_STRUCT_HAS_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()
+{
+   ${_STRUCT}* tmp;
+   tmp->${_MEMBER};
+  return 0;
+}
+")
+   CHECK_C_SOURCE_COMPILES("${_CHECK_STRUCT_MEMBER_SOURCE_CODE}" ${_RESULT})
+
+ENDMACRO (CHECK_STRUCT_HAS_MEMBER)
+