lcov or gcov -- how to large project analyze

I have large project to analyse. How to use gcov or lcov for it. I found plenty of document for gcov for a si开发者_运维知识库ngle C file. Not much document about lcov too. I'll be thankful for any pointers or tips or links

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Havn't you read the example (contained in the dist) and the docs about the gvoc, genhtml etc. There is described that you can analyze as many files as you wish (--zerocounters only for the first one) and then use the same analyze file for the others. So the result would be coverage for all files.

EDIT: Have you read the README on the web site

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Check the man pages for lcov - all options are described in there.