Re: [Openexr-devel] Version query?

[Florian Kainz]

I believe you are right, ther is no library version flag in the
header files.  The "configure" script should be able to add a
version number to OpenEXRConfig.h.

Larry Gritz wrote:
> Is there a way that an app can detect what version of OpenEXR it's 
> using, from the header files?  I can't find any #define VERSION or 
> anything like that.  (There's a version defined for the file format, but 
> not the library itself.)
>
> This would be really helpful for an application that wants to compile 
> itself against whatever version of OpenEXR is on the system it finds, 
> and #ifdef out code that may not be supported in certain versions.  For 
> example, there are some compression methods that are new to 1.6, and if 
> you use the enum but you're really compiling against 1.4, it won't 
> compile.  You'd like to #if OPENEXR_VERSION >= 10601 ... or something 
> like that, so it can take advantage of the new feature if available, but 
> not break the compile if it's too old.
>
> If such a thing is not already there, I recommend adding it in future 
> releases.  If it is there, it's very well hidden!