Don't bother checking for size_t, mode_t and off_t neither

The latter two are always defined in sys/types.h on all Unix systems and
we already define them for MSVC (which doesn't use configure anyhow).

The former type is always defined everywhere.

build/cmake/setup.cmake

@@ -646,14 +646,8 @@ if(wxUSE_XLOCALE)
     set(CMAKE_EXTRA_INCLUDE_FILES)
 endif()
 
-# Check size and availability of various types
-set(SYSTYPES
-    size_t
-    wchar_t int long short
-    )
-if(NOT MSVC)
-    list(APPEND SYSTYPES mode_t off_t)
-endif()
+# Check sizes of various types
+set(SYSTYPES size_t wchar_t int long short)
 
 foreach(SYSTYPE ${SYSTYPES})
     string(TOUPPER ${SYSTYPE} SYSTYPE_UPPER)

build/cmake/setup.h.in

@@ -17,15 +17,6 @@
 /* the installation location prefix from configure */
 #cmakedefine wxINSTALL_PREFIX "@wxINSTALL_PREFIX@"
 
-/* Define to `int' if <sys/types.h> doesn't define.  */
-#cmakedefine mode_t int
-
-/* Define to `long' if <sys/types.h> doesn't define.  */
-#cmakedefine off_t long
-
-/* Define to `unsigned' if <sys/types.h> doesn't define.  */
-#cmakedefine size_t unsigned
-
 /* Define if ssize_t type is available.  */
 #cmakedefine HAVE_SSIZE_T