[Openexr-devel] Version query?

[Larry Gritz]

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!

--
Larry Gritz
address@hidden