Suggestion to have a way to set the compatiblity version for a library

When building a library it would be nice if there was a way to specify the compatibility version.

Currently it is possible to set the version with
VERSION = 3.2.4
This will give the compiler
-current_version 3.2.4 -compatibility_version 3.2

For example if one would want compatibility version of 1 this would not be possible currently in qmake.

It would be nice if there was a way to specifically set compatibility_version.
If it is set as a linker flag there will be two flags setting compatibility_version which will not compile.