^CMake Error at TARGET_SONAME_FILE-AIX\.cmake:[0-9]+ \(add_custom_target\):
  Error evaluating generator expression:

    \$<TARGET_SONAME_FILE:sla>

  TARGET_SONAME_FILE is not allowed for AIX_SHARED_LIBRARY_ARCHIVE libraries\.
Call Stack \(most recent call first\):
  CMakeLists\.txt:[0-9]+ \(include\)