| # - 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) |
| |
| |
| 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) |
| |
