title: Can't get gcovr to generate coverage data
body: <p>Using gcovr 3.2 I am trying to generate a code coverage report for a set unit tests that I have developed and run using Xcode 5.0. </p>
  
  <p>I have successfully configured Xcode to generate the .gcda files following the execution of the tests and I am able to view the results using CoverStory.</p>
  
  <p>However, when I try to generate a report using gcovr nothing is generated. With the verbose switch on I can see that it scans the directory for the gcda/gcno files and finds the one I'm expecting it to. I've tried various switches and putting the files in different directories without any luck. </p>
  
  <p>A similar question was asked here <a href="https://stackoverflow.com/q/22712135/820657">Gcovr generates coverage data for 0 files</a> but no solution has been posted. I have provided more detail in the hope I get a response.</p>
  
  <p>This is the output I get.</p>
  
  <pre><code>$ ls
  t1-map.d    t1-map.dia  t1-map.gcda t1-map.gcno t1-map.o
  
  $ gcovr -v -r .
  
  Scanning directory . for gcda/gcno files...
  Found 2 files (and will process 1)
  Running gcov: 'gcov /Users/Test/temp/coverage/t1-map.gcda --branch-counts --branch-probabilities --preserve-paths --object-directory /Users/Test/temp/coverage' in '/Users/Test/temp/coverage'
  Parsing coverage data for file /Users/Test/dev/boost/boost/system/error_code.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/system/error_code.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/system/system_error.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/system/system_error.hpp
  Parsing coverage data for file /Users/Test/dev/analysis-pipeline/analysis-services/src/t1-map.cpp
    Filtering coverage data for file /Users/Test/dev/analysis-pipeline/analysis-services/src/t1-map.cpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/variant/variant.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/variant/variant.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/aligned_storage.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/aligned_storage.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/variant/static_visitor.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/variant/static_visitor.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/variant/detail/visitation_impl.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/variant/detail/visitation_impl.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/variant/detail/cast_storage.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/variant/detail/cast_storage.hpp
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/memory
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/memory
  Parsing coverage data for file /Users/Test/dev/boost/boost/variant/detail/initializer.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/variant/detail/initializer.hpp
  Parsing coverage data for file /Users/Test/dev/analysis-pipeline/common/include/common/lm-fitter.inl
    Filtering coverage data for file /Users/Test/dev/analysis-pipeline/common/include/common/lm-fitter.inl
  Parsing coverage data for file /Users/Test/development/software/utilities/include/utilities/numerical-recipes/utilities.h
    Filtering coverage data for file /Users/Test/development/software/utilities/include/utilities/numerical-recipes/utilities.h
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/iosfwd
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/iosfwd
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/sstream
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/sstream
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/string
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/string
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/streambuf
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/streambuf
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/algorithm
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/algorithm
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/type_traits
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/type_traits
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/iterator
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/iterator
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/utility/formatting_ostream.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/utility/formatting_ostream.hpp
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/ios
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/ios
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/__locale
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/__locale
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/detail/attachable_sstream_buf.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/detail/attachable_sstream_buf.hpp
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/ostream
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/ostream
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/locale
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/locale
  Parsing coverage data for file /Users/Test/development/software/utilities/include/utilities/numerical-recipes/mrqmin.inl
    Filtering coverage data for file /Users/Test/development/software/utilities/include/utilities/numerical-recipes/mrqmin.inl
  Parsing coverage data for file /Users/Test/development/software/utilities/include/utilities/numerical-recipes/mrqcof.inl
    Filtering coverage data for file /Users/Test/development/software/utilities/include/utilities/numerical-recipes/mrqcof.inl
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/cmath
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/cmath
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/vector
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/vector
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/utility/string_literal.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/utility/string_literal.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/variant/get.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/variant/get.hpp
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/exception
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/exception
  Parsing coverage data for file /Users/Test/dev/boost/boost/throw_exception.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/throw_exception.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/exception/exception.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/exception/exception.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/utility/addressof.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/utility/addressof.hpp
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/__split_buffer
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/__split_buffer
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/limits
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/limits
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/typeinfo
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/typeinfo
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/sources/record_ostream.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/sources/record_ostream.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/move/utility.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/move/utility.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/sources/basic_logger.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/sources/basic_logger.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/core/core.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/core/core.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/smart_ptr/shared_ptr.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/smart_ptr/shared_ptr.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/detail/locks.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/detail/locks.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/core/record.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/core/record.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/sources/threading_models.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/sources/threading_models.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/detail/light_rw_mutex.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/detail/light_rw_mutex.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/sources/severity_feature.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/sources/severity_feature.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/parameter/keyword.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/parameter/keyword.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/parameter/aux_/default.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/parameter/aux_/default.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/parameter/aux_/tagged_argument.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/parameter/aux_/tagged_argument.hpp
  Parsing coverage data for file /Users/Test/dev/boost/boost/log/attributes/named_scope.hpp
    Filtering coverage data for file /Users/Test/dev/boost/boost/log/attributes/named_scope.hpp
  Parsing coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/stdexcept
    Filtering coverage data for file /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/c++/v1/stdexcept
  Gathered coveraged data for 0 files
  ------------------------------------------------------------------------------
                             GCC Code Coverage Report
  Directory: .
  ------------------------------------------------------------------------------
  File                                       Lines    Exec  Cover   Missing
  ------------------------------------------------------------------------------
  ------------------------------------------------------------------------------
  TOTAL                                          0       0    --%
  ------------------------------------------------------------------------------
  </code></pre>