On 11/23/2010 10:30 PM, Anton Deguet wrote:
> Hello,
>
> I am trying to use a UI option to set a value used in configure_file and
> ideally obtain a file that doesn't use ON/OFF. Here is a CMake sample:
> option (MYLIB_HAS_WHATEVER "Use whatever library" OFF)
>
> In my config.h.in I have:
> #define ON 1
> #define OFF 0
> #define MYLIB_HAS_WHATEVER ${MYLIB_HAS_WHATEVER}
>
> Then in my code I can use:
> #if MYLIB_HAS_WHATEVER
> ....
> #endif
>
> It worked so far but there is an issue if we end up using other libraries
> which also define ON and/or OFF. There seems to be no way to tell CMake to
> use 1/0 instead of ON/OFF during the configure_file. My solution has been to
> modify my CMake to do the following:
> option (MYLIB_HAS_WHATEVER "Use whatever library" OFF)
> if (MYLIB_HAS_WHATEVER)
> set(MYLIB_CONFIG_HAS_WHATEVER 1)
> ....
> else (MYLIB_HAS_WHATEVER)
> set(MYLIB_CONFIG_HAS_WHATEVER 0)
> ....
> endif (MYLIB_HAS_WHATEVER)
>
> and in the config.h.in do:
> #define MYLIB_HAS_WHATEVER ${MYLIB_CONFIG_HAS_WHATEVER}
>
> Is there a better way?
In your config.h.in, simply write:
#cmakedefine01 MYLIB_HAS_WHATEVER
With CONFIGURE_FILE(), this expands to
#define MYLIB_HAS_WHATEVER 0
or
#define MYLIB_HAS_WHATEVER 1
depending on the value of MYLIB_HAS_WHATEVER.
Regards,
Michael
_______________________________________________
Powered by www.kitware.com
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the CMake FAQ at:
http://www.cmake.org/Wiki/CMake_FAQ
Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake
