Shark does not show function names

I want to use shark to profile my application(I used it before and it worked fine), but now it does not show any function name. I have only Unknown Library and address[unknown] in symbol column. Some project parts are static libraries(compiled and linked in same project, with debug symbols on). Functio开发者_开发问答n names from standard lib or from other framework are shown.

Thanks for help!

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Did you compile with debug symbols activated? Release builds have the symbols stripped and hence shark cannot show them.