Added in version 3.31.
On AIX, enable or disable creation of a shared library archive
for a SHARED library target:
If enabled, the shared object .so file is placed inside
an archive .a file. This is the preferred convention on AIX.
The shared object name in the archive encodes version information from
the SOVERSION target property, if set, and otherwise from
the VERSION target property, if set.
If disabled, a plain shared object .so file is produced.
This is consistent with other UNIX platforms.
This property defaults to CMAKE_AIX_SHARED_LIBRARY_ARCHIVE
if that variable is set when a non-imported SHARED library target
is created by add_library(). Imported targets must explicitly
enable AIX_SHARED_LIBRARY_ARCHIVE if they import an AIX
shared library archive.