Use shiny CMake FindBacktrace module.
Index: ext/libclementine-common/core/logging.cpp
--- ext/libclementine-common/core/logging.cpp.orig
+++ ext/libclementine-common/core/logging.cpp
@@ -336,7 +336,7 @@ void DumpStackTrace() {
   }
   free(symbols);
 #else
-  qLog(Debug) << "FIXME: Implement printing stack traces on this platform";
+  qLog(Debug) << "FIXME: Implement printing stack traces on this platform, or port backtrace library";
 #endif
 }
 
