cmake: support CMAKE_OSX_ARCHITECTURES when detecting SIZEOF variables

/* Define to the function return type for send. */

#cmakedefine SEND_TYPE_RETV ${SEND_TYPE_RETV}

/*

 Note: SIZEOF_* variables are fetched with CMake through check_type_size().

 As per CMake documentation on CheckTypeSize, C preprocessor code is

 generated by CMake into SIZEOF_*_CODE. This is what we use in the

 following statements.

 Reference: https://cmake.org/cmake/help/latest/module/CheckTypeSize.html

*/

/* The size of `int', as computed by sizeof. */

#cmakedefine SIZEOF_INT ${SIZEOF_INT}

${SIZEOF_INT_CODE}

/* The size of `short', as computed by sizeof. */

#cmakedefine SIZEOF_SHORT ${SIZEOF_SHORT}

${SIZEOF_SHORT_CODE}

/* The size of `long', as computed by sizeof. */

#cmakedefine SIZEOF_LONG ${SIZEOF_LONG}

${SIZEOF_LONG_CODE}

/* The size of `off_t', as computed by sizeof. */

#cmakedefine SIZEOF_OFF_T ${SIZEOF_OFF_T}

${SIZEOF_OFF_T_CODE}

/* The size of `curl_off_t', as computed by sizeof. */

#cmakedefine SIZEOF_CURL_OFF_T ${SIZEOF_CURL_OFF_T}

${SIZEOF_CURL_OFF_T_CODE}

/* The size of `size_t', as computed by sizeof. */

#cmakedefine SIZEOF_SIZE_T ${SIZEOF_SIZE_T}

${SIZEOF_SIZE_T_CODE}

/* The size of `time_t', as computed by sizeof. */

#cmakedefine SIZEOF_TIME_T ${SIZEOF_TIME_T}

${SIZEOF_TIME_T_CODE}

/* Define to 1 if you have the ANSI C header files. */

#cmakedefine STDC_HEADERS 1