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

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

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