genhtml finds wrong common prefix

[rlalik]

Hi,

I have weird problem with --exclude option and either I use it incorrect or something else is wrong.

I have a project which also uses CERN ROOT framework. The ROOT framework generates some special cc files which are compiled into libs, but are not needed for coverage.

So, I run lcov in a following way:

$ lcov --directory . --exclude "/usr/*" --capture --output-file coverage.info
Capturing coverage data from .
Found gcov version: 11.2.0
Using intermediate gcov format
Scanning . for .gcda files ...
Found 20 data files in .
Processing tests/CMakeFiles/gtests.dir/tests_PhysicsBase.cc.gcda
Processing tools/lib/CMakeFiles/G__cc6_tools_cc.dir/G__cc6_tools_cc.cxx.gcda
Processing tools/lib/CMakeFiles/cc6_tools.dir/DataStructConvert.cc.gcda
Processing tools/lib/CMakeFiles/cc6_tools.dir/PhysicsBase.cc.gcda
Processing common/lib/CMakeFiles/G__cc6_common_cc.dir/G__cc6_common_cc.cxx.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/DR_GenerallStructs.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/Sources/MultiPointSource.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/Sources/PointSource.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/Sources/PlanarSource.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/Track.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/InputReaderEI.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/Source.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/InputReaderSimple.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/IsectionPoint.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/InputReaderGeant.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/G4Input.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/InputReaderNN.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/InputReader.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/BinnedGeometry.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/DetPlane.cc.gcda
Excluded data for 53 files due to include/exclude options
Finished .info-file creation

and

$ genhtml coverage.info --output-directory cov
Reading data file coverage.info
Found 34 entries.
Found common filename prefix "/home/dziadu/projects/ComptonCamera6"
Writing .css and .png files.
Generating output.
Processing file build_cc/common/lib/G__cc6_common_cc.cxx
Processing file build_cc/tools/lib/G__cc6_tools_cc.cxx
Processing file common/lib/InputReaderSimple.hh
Processing file common/lib/InputReaderGeant.hh
Processing file common/lib/IsectionPoint.hh
Processing file common/lib/InputReaderSimple.cc
Processing file common/lib/G4Input.cc
Processing file common/lib/Track.cc
Processing file common/lib/BinnedGeometry.cc
Processing file common/lib/InputReaderEI.hh
Processing file common/lib/DR_GenerallStructs.hh
Processing file common/lib/Source.cc
Processing file common/lib/DR_GenerallStructs.cc
Processing file common/lib/InputReaderNN.cc
Processing file common/lib/InputReaderEI.cc
Processing file common/lib/DetPlane.hh
Processing file common/lib/DetPlane.cc
Processing file common/lib/InputReader.cc
Processing file common/lib/IsectionPoint.cc
Processing file common/lib/InputReader.hh
Processing file common/lib/Source.hh
Processing file common/lib/InputReaderGeant.cc
Processing file common/lib/Track.hh
Processing file common/lib/InputReaderNN.hh
Processing file common/lib/Sources/PointSource.cc
Processing file common/lib/Sources/PointSource.hh
Processing file common/lib/Sources/PlanarSource.cc
Processing file common/lib/Sources/PlanarSource.hh
Processing file common/lib/Sources/MultiPointSource.cc
Processing file common/lib/Sources/MultiPointSource.hh
Processing file tests/tests_PhysicsBase.cc
Processing file tools/lib/DataStructConvert.cc
Processing file tools/lib/PhysicsBase.hh
Processing file tools/lib/PhysicsBase.cc
Writing directory view page.
Overall coverage rate:
  lines......: 11.6% (256 of 2211 lines)
  functions..: 6.7% (34 of 508 functions)

I have there unwanted files (first two in genhtml) matching pattern G__*cc_cxx which I would like to get rid of with `--exclude "/G___cc.cxx" liek this:

$ lcov --directory . --exclude "/usr/*" --exclude "*/G__*_cc.cxx" --capture --output-file coverage.info
Capturing coverage data from .
Found gcov version: 11.2.0
Using intermediate gcov format
Scanning . for .gcda files ...
Found 20 data files in .
Processing tests/CMakeFiles/gtests.dir/tests_PhysicsBase.cc.gcda
Processing tools/lib/CMakeFiles/G__cc6_tools_cc.dir/G__cc6_tools_cc.cxx.gcda
Processing tools/lib/CMakeFiles/cc6_tools.dir/DataStructConvert.cc.gcda
Processing tools/lib/CMakeFiles/cc6_tools.dir/PhysicsBase.cc.gcda
Processing common/lib/CMakeFiles/G__cc6_common_cc.dir/G__cc6_common_cc.cxx.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/DR_GenerallStructs.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/Sources/MultiPointSource.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/Sources/PointSource.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/Sources/PlanarSource.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/Track.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/InputReaderEI.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/Source.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/InputReaderSimple.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/IsectionPoint.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/InputReaderGeant.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/G4Input.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/InputReaderNN.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/InputReader.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/BinnedGeometry.cc.gcda
Processing common/lib/CMakeFiles/cc6_common.dir/DetPlane.cc.gcda
Excluded data for 55 files due to include/exclude options
Finished .info-file creation

and the gen html shows

$ genhtml coverage.info --output-directory cov
Reading data file coverage.info
Found 32 entries.
Found common filename prefix "/home/dziadu/projects/ComptonCamera6/common"
Writing .css and .png files.
Generating output.
Processing file lib/InputReaderEI.hh
Processing file lib/IsectionPoint.hh
Processing file lib/DetPlane.hh
Processing file lib/IsectionPoint.cc
Processing file lib/InputReaderEI.cc
Processing file lib/InputReaderSimple.cc
Processing file lib/InputReader.hh
Processing file lib/InputReaderGeant.cc
Processing file lib/Track.hh
Processing file lib/InputReader.cc
Processing file lib/InputReaderNN.hh
Processing file lib/InputReaderGeant.hh
Processing file lib/Track.cc
Processing file lib/Source.cc
Processing file lib/InputReaderSimple.hh
Processing file lib/DR_GenerallStructs.hh
Processing file lib/G4Input.cc
Processing file lib/InputReaderNN.cc
Processing file lib/BinnedGeometry.cc
Processing file lib/Source.hh
Processing file lib/DR_GenerallStructs.cc
Processing file lib/DetPlane.cc
Processing file lib/Sources/PointSource.cc
Processing file lib/Sources/PlanarSource.hh
Processing file lib/Sources/MultiPointSource.hh
Processing file lib/Sources/PointSource.hh
Processing file lib/Sources/PlanarSource.cc
Processing file lib/Sources/MultiPointSource.cc
Processing file /home/dziadu/projects/ComptonCamera6/tests/tests_PhysicsBase.cc
Processing file /home/dziadu/projects/ComptonCamera6/tools/lib/DataStructConvert.cc
Processing file /home/dziadu/projects/ComptonCamera6/tools/lib/PhysicsBase.cc
Processing file /home/dziadu/projects/ComptonCamera6/tools/lib/PhysicsBase.hh
Writing directory view page.
Overall coverage rate:
  lines......: 0.0% (0 of 1366 lines)
  functions..: 0.0% (0 of 259 functions)

which apparently screw up all paths. Do you have an idea what is wrong?
Apparently the common path Found common filename prefix "/home/dziadu/projects/ComptonCamera6/common" is discovered wrong.

[rlalik]

Sorry, I found out that in the end genhtml was a problem and passing --prefix to it solves the issue.

But maybe the way how genhtml is searching for the common prefix must be revised as it clearly did not found it correct.

[GitMensch]

Is this still an issue with lcov 1.16?

[henry2cox]

I think that this issues is resolved - or at least has not been updated in 8 months.
Thus: closing it now.

If there is still a problem: please either reopen this issue or file a new one. Please include a detailed description of the problem and include a testcase that exhibits the issue if possible.
Henry