1 # Copyright (c) 2012 - 2013, Lars Bilke
4 # Redistribution and use in source and binary forms, with or without modification,
5 # are permitted provided that the following conditions are met:
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8 # list of conditions and the following disclaimer.
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11 # this list of conditions and the following disclaimer in the documentation
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23 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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31 # 2012-01-31, Lars Bilke
32 # - Enable Code Coverage
34 # 2013-09-17, Joakim Söderberg
35 # - Added support for Clang.
36 # - Some additional usage instructions.
40 # 0. (Mac only) If you use Xcode 5.1 make sure to patch geninfo as described here:
41 # http://stackoverflow.com/a/22404544/80480
43 # 1. Copy this file into your cmake modules path.
45 # 2. Add the following line to your CMakeLists.txt:
46 # INCLUDE(CodeCoverage)
48 # 3. Set compiler flags to turn off optimization and enable coverage:
49 # SET(CMAKE_CXX_FLAGS "-g -O0 -fprofile-arcs -ftest-coverage")
50 # SET(CMAKE_C_FLAGS "-g -O0 -fprofile-arcs -ftest-coverage")
52 # 3. Use the function SETUP_TARGET_FOR_COVERAGE to create a custom make target
53 # which runs your test executable and produces a lcov code coverage report:
55 # SETUP_TARGET_FOR_COVERAGE(
56 # my_coverage_target # Name for custom target.
57 # test_driver # Name of the test driver executable that runs the tests.
58 # # NOTE! This should always have a ZERO as exit code
59 # # otherwise the coverage generation will not complete.
60 # coverage # Name of output directory.
63 # 4. Build a Debug build:
64 # cmake -DCMAKE_BUILD_TYPE=Debug ..
66 # make my_coverage_target
71 FIND_PROGRAM( GCOV_PATH gcov )
72 FIND_PROGRAM( LCOV_PATH lcov )
73 FIND_PROGRAM( GENHTML_PATH genhtml )
74 FIND_PROGRAM( GCOVR_PATH gcovr PATHS ${CMAKE_SOURCE_DIR}/tests)
77 MESSAGE(FATAL_ERROR "gcov not found! Aborting...")
78 ENDIF() # NOT GCOV_PATH
80 IF(NOT CMAKE_COMPILER_IS_GNUCXX)
81 # Clang version 3.0.0 and greater now supports gcov as well.
82 MESSAGE(WARNING "Compiler is not GNU gcc! Clang Version 3.0.0 and greater supports gcov as well, but older versions don't.")
84 IF(NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
85 MESSAGE(FATAL_ERROR "Compiler is not GNU gcc! Aborting...")
87 ENDIF() # NOT CMAKE_COMPILER_IS_GNUCXX
89 SET(CMAKE_CXX_FLAGS_COVERAGE
90 "-g -O0 --coverage -fprofile-arcs -ftest-coverage"
91 CACHE STRING "Flags used by the C++ compiler during coverage builds."
93 SET(CMAKE_C_FLAGS_COVERAGE
94 "-g -O0 --coverage -fprofile-arcs -ftest-coverage"
95 CACHE STRING "Flags used by the C compiler during coverage builds."
97 SET(CMAKE_EXE_LINKER_FLAGS_COVERAGE
99 CACHE STRING "Flags used for linking binaries during coverage builds."
101 SET(CMAKE_SHARED_LINKER_FLAGS_COVERAGE
103 CACHE STRING "Flags used by the shared libraries linker during coverage builds."
106 CMAKE_CXX_FLAGS_COVERAGE
107 CMAKE_C_FLAGS_COVERAGE
108 CMAKE_EXE_LINKER_FLAGS_COVERAGE
109 CMAKE_SHARED_LINKER_FLAGS_COVERAGE )
111 IF ( NOT (CMAKE_BUILD_TYPE STREQUAL "Debug" OR CMAKE_BUILD_TYPE STREQUAL "Coverage"))
112 MESSAGE( WARNING "Code coverage results with an optimized (non-Debug) build may be misleading" )
113 ENDIF() # NOT CMAKE_BUILD_TYPE STREQUAL "Debug"
116 # Param _targetname The name of new the custom make target
117 # Param _testrunner The name of the target which runs the tests.
118 # MUST return ZERO always, even on errors.
119 # If not, no coverage report will be created!
120 # Param _outputname lcov output is generated as _outputname.info
121 # HTML report is generated in _outputname/index.html
122 # Optional fourth parameter is passed as arguments to _testrunner
123 # Pass them in list form, e.g.: "-j;2" for -j 2
124 FUNCTION(SETUP_TARGET_FOR_COVERAGE _targetname _testrunner _outputname)
127 MESSAGE(FATAL_ERROR "lcov not found! Aborting...")
128 ENDIF() # NOT LCOV_PATH
131 MESSAGE(FATAL_ERROR "genhtml not found! Aborting...")
132 ENDIF() # NOT GENHTML_PATH
135 ADD_CUSTOM_TARGET(${_targetname}
138 ${LCOV_PATH} --directory . --zerocounters
141 COMMAND ${_testrunner} ${ARGV3}
143 # Capturing lcov counters and generating report
144 COMMAND ${LCOV_PATH} --directory . --capture --output-file ${_outputname}.info
145 COMMAND ${LCOV_PATH} --remove ${_outputname}.info 'tests/*' '/usr/*' --output-file ${_outputname}.info.cleaned
146 COMMAND ${GENHTML_PATH} -o ${_outputname} ${_outputname}.info.cleaned
147 COMMAND ${CMAKE_COMMAND} -E remove ${_outputname}.info ${_outputname}.info.cleaned
149 WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
150 COMMENT "Resetting code coverage counters to zero.\nProcessing code coverage counters and generating report."
153 # Show info where to find the report
154 ADD_CUSTOM_COMMAND(TARGET ${_targetname} POST_BUILD
156 COMMENT "Open ./${_outputname}/index.html in your browser to view the coverage report."
159 ENDFUNCTION() # SETUP_TARGET_FOR_COVERAGE
161 # Param _targetname The name of new the custom make target
162 # Param _testrunner The name of the target which runs the tests
163 # Param _outputname cobertura output is generated as _outputname.xml
164 # Optional fourth parameter is passed as arguments to _testrunner
165 # Pass them in list form, e.g.: "-j;2" for -j 2
166 FUNCTION(SETUP_TARGET_FOR_COVERAGE_COBERTURA _targetname _testrunner _outputname)
168 IF(NOT PYTHON_EXECUTABLE)
169 MESSAGE(FATAL_ERROR "Python not found! Aborting...")
170 ENDIF() # NOT PYTHON_EXECUTABLE
173 MESSAGE(FATAL_ERROR "gcovr not found! Aborting...")
174 ENDIF() # NOT GCOVR_PATH
176 ADD_CUSTOM_TARGET(${_targetname}
179 ${_testrunner} ${ARGV3}
182 COMMAND ${GCOVR_PATH} -x -r ${CMAKE_SOURCE_DIR} -e '${CMAKE_SOURCE_DIR}/tests/' -o ${_outputname}.xml
183 WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
184 COMMENT "Running gcovr to produce Cobertura code coverage report."
187 # Show info where to find the report
188 ADD_CUSTOM_COMMAND(TARGET ${_targetname} POST_BUILD
190 COMMENT "Cobertura code coverage report saved in ${_outputname}.xml."
193 ENDFUNCTION() # SETUP_TARGET_FOR_COVERAGE_COBERTURA