project(Test)
cmake_minimum_required(VERSION 2.7)
INCLUDE(${CMAKE_ROOT}/Modules/CheckTypeSize.cmake)
set(CMAKE_REQUIRED_DEFINITIONS_SAVE ${CMAKE_REQUIRED_DEFINITIONS})
set(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS};-
D__need_wint_t=1)
CHECK_TYPE_SIZE(wint_t WINT_T)
message(STATUS "Size of wint_t: ${WINT_T}")
message(STATUS "HAVE_WINT_T: ${HAVE_WINT_T}")
set(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS_SAVE})
Although I am not sure under what circumstances you are supposed to
define __need_wint_t? Or if there is some other encompassing macro to
define. Otherwise the above will find the size in bytes of wint_t.
_________________________________________________________
Mike Jackson [email protected]
BlueQuartz Software www.bluequartz.net
Principal Software Engineer Dayton, Ohio
On Feb 16, 2009, at 7:30 PM, Aaron Turner wrote:
More testing seems to indicate that check_symbol_exists won't find any
typedef defined in headers.
Looking a the CheckSymbolExists.cmake file, the following .c is
generated as a test:
#include <runetype.h>
void cmakeRequireSymbol(int dummy,...) {
(void)dummy;
}
int main() {
#ifndef wint_t
cmakeRequireSymbol(0, &wint_t);
#endif
return 0;
}
Unfortunately, you can't use #ifndef to test for the existence of a
typedef, hence you get a compile failure and the result of the test is
false.
Is there another check which is typedef/define agnostic? I'm sure I
could write my own, but this seems like it should be included in the
standard cmake library.
--
Aaron Turner
http://synfin.net/
http://tcpreplay.synfin.net/ - Pcap editing and replay tools for
Unix & Windows
Those who would give up essential Liberty, to purchase a little
temporary Safety,
deserve neither Liberty nor Safety.
-- Benjamin Franklin
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