[CMake] 64bit format

[Brad King]

Alexander Neundorf wrote:
> -------- Original-Nachricht --------
> Datum: Fri, 20 Oct 2006 18:05:09 +0200
> Von: frederic heem <frederic.heem at telsey.it>
> An: cmake <cmake at cmake.org>
> Betreff: [CMake] 64bit format
> 
>> Hi,
>> While trying to convert ethereal build system from autotool to cmake, I
>> came 
>> across a problem which may be already solved.
>> There are three possible prefix for defining 64bit format: "%ll", "%L" 
>> and "%q". For instance, printing a signed decimal number could 
>> be "%lld", "%Ld" or "%qd".
>> If someone has already implemented these checks, I would be glad to use
>> them. 
> 
> Not that I know of.
> You probably have to use CHECK_C_SOURCE_COMPILES()

This may have to be a TRY_RUN because the format string will always
compile but may not run.  Also note that on VS you need to use "%I64"
for variables of type __int64.

Do you happen to know what platforms use "%L" or "%q"?  I've never
needed anything other than "%ll[udx]" and "%I64[udx]".

-Brad