How can I use find, nm and grep to find a symbol among many shared libraries?

I am struggling with the right command to do the following:

find all shared libraries (* .so) containing a specific symbol.

Here's what I've tried:

find -iname '*.so*' -exec nm {} \; | grep -H _ZN6QDebugD1Ev

      

        
        
        
      

    

The above gives some output with the characters found, but does not specify the name of the file that the character was in. Any flag I give grep to tell it to print the filename is lost because grep is fed from stdin.

(standard input):         U _ZN6QDebugD1Ev
(standard input):         U _ZN6QDebugD1Ev
(standard input):         U _ZN6QDebugD1Ev
(standard input):         U _ZN6QDebugD1Ev
(standard input):0015e928 T _ZN6QDebugD1Ev
(standard input):         U _ZN6QDebugD1Ev
(standard input):         U _ZN6QDebugD1Ev
(standard input):         U _ZN6QDebugD1Ev

      

        
        
        
      

    

Another try:

find -iname '*.so*' -exec nm {} \; -exec grep _ZN6QDebugD1Ev {} \;

      

        
        
        
      

    

This doesn't work because the two execs are completely independent.

What should I do?