Das Werkstatt

Posted: **Sun Aug 30, 2015 10:56 pm**

I'm going to describe the necessary steps to produce an HTML output of code coverage by FFmpeg's FATE tests, just like the one on http://coverage.ffmpeg.org/

It's basically a different version of the article "FATE/TestingCoverage" on FFmpeg wiki.

The OS used is Ubuntu 12.04 (LTS).
Most of these instructions should work for other versions of Ubuntu, as well as Debian too.

Install LCOV package:

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$ apt-get install lcov

Compile/build FFmpeg with GCOV support:
Configure your FFmpeg build as usual, but add the following build option:

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--toolchain=gcov

In case you've got the fate-suite samples in a non-default location, now would be the right time to add "--samples=path-to-fate-suite/".

Then compile/build FFmpeg:

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$ make clean && make

Run FATE tests:

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# The -j parameter controls thread number for parallel building
$ make -k -j6 fate

Even though with these parameters tests run in parallel, his can take a while...

Generate LCOV HTML output:

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$ make lcov

View HTML page:
Open the file "index.html" in the folder "lcov" in FFmpeg's source tree.

Links:

Das Werkstatt

FFmpeg: FATE lines of code coverage (LCOV)

FFmpeg: FATE lines of code coverage (LCOV)