Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 1 | # - Check if the given struct or class has the specified member variable |
| 2 | # CHECK_STRUCT_MEMBER (STRUCT MEMBER HEADER VARIABLE) |
| 3 | # |
| 4 | # STRUCT - the name of the struct or class you are interested in |
| 5 | # MEMBER - the member which existence you want to check |
| 6 | # HEADER - the header(s) where the prototype should be declared |
| 7 | # VARIABLE - variable to store the result |
| 8 | # |
| 9 | # The following variables may be set before calling this macro to |
| 10 | # modify the way the check is run: |
| 11 | # |
| 12 | # CMAKE_REQUIRED_FLAGS = string of compile command line flags |
| 13 | # CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar) |
| 14 | # CMAKE_REQUIRED_INCLUDES = list of include directories |
| 15 | |
| 16 | INCLUDE(CheckCXXSourceCompiles) |
| 17 | |
| 18 | MACRO (CHECK_STRUCT_MEMBER _STRUCT _MEMBER _HEADER _RESULT) |
| 19 | SET(_INCLUDE_FILES) |
| 20 | FOREACH (it ${_HEADER}) |
| 21 | SET(_INCLUDE_FILES "${_INCLUDE_FILES}#include <${it}>\n") |
| 22 | ENDFOREACH (it) |
| 23 | |
| 24 | SET(_CHECK_STRUCT_MEMBER_SOURCE_CODE " |
| 25 | ${_INCLUDE_FILES} |
| 26 | int main() |
| 27 | { |
| 28 | ${_STRUCT}* tmp; |
| 29 | tmp->${_MEMBER}; |
| 30 | return 0; |
| 31 | } |
| 32 | ") |
| 33 | CHECK_CXX_SOURCE_COMPILES("${_CHECK_STRUCT_MEMBER_SOURCE_CODE}" ${_RESULT}) |
| 34 | |
| 35 | ENDMACRO (CHECK_STRUCT_MEMBER) |
| 36 | |