Using sysprof with 64bits linux

[Jean-Marc Lasgouttes <lasgouttes lyx org>]

Dear all,

A long time ago I was a happy 32bit Linux user and sysprof was my 
friend. Now that I am on x64, I cannot manage to have reasonable calling 
trees out of it.

I compile my builds with autoconf using -fno-omit-frame-pointer, but it 
seems that it is not enough (or should it be used when linking too?). 
What other flags am I supposed to use to produce a binary that will be 
palatable to sysprof?

Any help appreciated,
JMarc