<p>In <a href="https://github.com/mlpack/mlpack/pull/720#discussion_r70869929">CMakeLists.txt</a>:</p>
<pre style='color:#555'>&gt; +    find_program(LCOV lcov)
&gt; +
&gt; +    if(NOT GCOV)
&gt; +      message(FATAL_ERROR &quot;gcov not found! Aborting...&quot;)
&gt; +    endif()
&gt; +
&gt; +    set(CMAKE_CXX_FLAGS &quot;${CMAKE_CXX_FLAGS} --coverage -fno-inline -fno-inline-small-functions -fno-default-inline -fprofile-arcs -fkeep-inline-functions&quot;)
&gt; +    message(WARNING &quot;Adding debug options for coverage&quot;)
&gt; +    # Remove optimizations for better line coverage
&gt; +    set(DEBUG ON)
&gt; +
&gt; +    if(LCOV)
&gt; +      configure_file(CMake/mlpack_coverage.in mlpack_coverage @ONLY)
&gt; +      add_custom_target(mlpack_coverage DEPENDS mlpack_test COMMAND ${PROJECT_BINARY_DIR}/mlpack_coverage)
&gt; +    else()
&gt; +      message(WARNING &quot;&#39;lcov&#39; not found, local coverage report is disabled. Install &#39;lcov&#39; and rerun cmake to generate local coverage report.&quot;)
</pre>
<p>Maybe the user wants to use MLPACK with some other library to test coverage? So BUILD_WITH_COVERAGE just compiles mlpack with coverage functionality. Would it be better to separate the two? I mean create another target which will generate 'mlpack_coverage' . In that case there would be no confusion.</p>

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