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lcov respectively geninfo cannot read gcda files

I'm are trying to setup lcov on a local Windows computer using cygwin and the bash shell. I installed the newest version of lcov downloaded from here: lcov at sourceforge.

When I call a specific gcda file, then I get an output. The call is: lcov -c -d FileName.gcda -o outputfile.info

As far as I read usually lcov shall be able to iterate over all gcda files in a folder. My call for rotating over all gcda files is:

lcov -c -d . -o outputfile.info

With the above code I get the following output:

Capturing coverage data from .
Found gcov version 6.4.0
Scanning . for .gcda files ...
geninfo: WARNING: no .gcda files found in . - skipping!
Finished .info-file creation

Here a screenshot: lcov failure As can be seen, there is a CanAdapter.gcda and CanAdapter.gcno, but with the configuration above geninfo produces a failure.

When I try to make a call like this:

lcove -c -d *.gcda -o outputfile.info

I get the following answer:

lcov: Extra parameter found: 'FileName2.gcda'
Use lcov --help to get usage information

I read the help, and it doesn't help as much as I need.

Solution

  • I found the answer to my problem.

    On windows machine there are two possibilities to run lcov.

    1. In the cygwin folder there is a batch script calling "Cygwin.bat". Run this script. When the scripts opens type the following line:

    lcov -c -d /cygdrive/c/path where the gcda files are located -o /cygdrive/c/path where the output folder is located/lcov.info

    The same is to do with genhtml to create the html file.

    1. You can open the windows cmd.exe. After this you need to add the following line:

    sh -c -l "lcov -c -d /cygdrive/c/path where the gcda files are located -o /cygdrive/c/path where the output folder is located/lcov.info"

    It is important to write

    sh -c -l

    and the lcov command in

    " "

    otherwise lcov and genhtml wont work.