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      1 #
      2 # Boost Software License - Version 1.0 - August 17th, 2003
      3 #
      4 # Permission is hereby granted, free of charge, to any person or organization
      5 # obtaining a copy of the software and accompanying documentation covered by
      6 # this license (the "Software") to use, reproduce, display, distribute,
      7 # execute, and transmit the Software, and to prepare derivative works of the
      8 # Software, and to permit third-parties to whom the Software is furnished to
      9 # do so, all subject to the following:
     10 # 
     11 # The copyright notices in the Software and this entire statement, including
     12 # the above license grant, this restriction and the following disclaimer,
     13 # must be included in all copies of the Software, in whole or in part, and
     14 # all derivative works of the Software, unless such copies or derivative
     15 # works are solely in the form of machine-executable object code generated by
     16 # a source language processor.
     17 # 
     18 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     19 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     20 # FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
     21 # SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
     22 # FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
     23 # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     24 # DEALINGS IN THE SOFTWARE.
     25 #
     26 # 2012-01-31, Lars Bilke
     27 # - Enable Code Coverage
     28 #
     29 # 2013-09-17, Joakim Sderberg
     30 # - Added support for Clang.
     31 # - Some additional usage instructions.
     32 #
     33 # 2016-11-02, Azat Khuzhin
     34 # - Adopt for C compiler only (libevent)
     35 #
     36 # USAGE:
     37 # 1. Copy this file into your cmake modules path.
     38 #
     39 # 2. Add the following line to your CMakeLists.txt:
     40 #      INCLUDE(CodeCoverage)
     41 #
     42 # 3. Set compiler flags to turn off optimization and enable coverage: 
     43 #    SET(CMAKE_CXX_FLAGS "-g -O0 -fprofile-arcs -ftest-coverage")
     44 #	 SET(CMAKE_C_FLAGS "-g -O0 -fprofile-arcs -ftest-coverage")
     45 #  
     46 # 3. Use the function SETUP_TARGET_FOR_COVERAGE to create a custom make target
     47 #    which runs your test executable and produces a lcov code coverage report:
     48 #    Example:
     49 #	 SETUP_TARGET_FOR_COVERAGE(
     50 #				my_coverage_target  # Name for custom target.
     51 #				test_driver         # Name of the test driver executable that runs the tests.
     52 #									# NOTE! This should always have a ZERO as exit code
     53 #									# otherwise the coverage generation will not complete.
     54 #				coverage            # Name of output directory.
     55 #				)
     56 #
     57 # 4. Build a Debug build:
     58 #	 cmake -DCMAKE_BUILD_TYPE=Debug ..
     59 #	 make
     60 #	 make my_coverage_target
     61 #
     62 #
     63 
     64 # Check prereqs
     65 FIND_PROGRAM( GCOV_PATH gcov )
     66 FIND_PROGRAM( LCOV_PATH lcov )
     67 FIND_PROGRAM( GENHTML_PATH genhtml )
     68 FIND_PROGRAM( GCOVR_PATH gcovr PATHS ${CMAKE_SOURCE_DIR}/tests)
     69 
     70 IF(NOT GCOV_PATH)
     71 	MESSAGE(FATAL_ERROR "gcov not found! Aborting...")
     72 ENDIF() # NOT GCOV_PATH
     73 
     74 IF(NOT CMAKE_COMPILER_IS_GNUCC)
     75 	# Clang version 3.0.0 and greater now supports gcov as well.
     76 	MESSAGE(WARNING "Compiler is not GNU gcc! Clang Version 3.0.0 and greater supports gcov as well, but older versions don't.")
     77 	
     78 	IF(NOT "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
     79 		MESSAGE(FATAL_ERROR "Compiler is not GNU gcc! Aborting...")
     80 	ENDIF()
     81 ENDIF() # NOT CMAKE_COMPILER_IS_GNUCC
     82 
     83 IF ( NOT CMAKE_BUILD_TYPE STREQUAL "Debug" )
     84   MESSAGE( WARNING "Code coverage results with an optimized (non-Debug) build may be misleading" )
     85 ENDIF() # NOT CMAKE_BUILD_TYPE STREQUAL "Debug"
     86 
     87 
     88 # Param _targetname     The name of new the custom make target
     89 # Param _testrunner     The name of the target which runs the tests.
     90 #						MUST return ZERO always, even on errors. 
     91 #						If not, no coverage report will be created!
     92 # Param _outputname     lcov output is generated as _outputname.info
     93 #                       HTML report is generated in _outputname/index.html
     94 # Optional fourth parameter is passed as arguments to _testrunner
     95 #   Pass them in list form, e.g.: "-j;2" for -j 2
     96 FUNCTION(SETUP_TARGET_FOR_COVERAGE _targetname _testrunner _outputname)
     97 
     98 	IF(NOT LCOV_PATH)
     99 		MESSAGE(FATAL_ERROR "lcov not found! Aborting...")
    100 	ENDIF() # NOT LCOV_PATH
    101 
    102 	IF(NOT GENHTML_PATH)
    103 		MESSAGE(FATAL_ERROR "genhtml not found! Aborting...")
    104 	ENDIF() # NOT GENHTML_PATH
    105 
    106 	# Setup target
    107 	ADD_CUSTOM_TARGET(${_targetname}
    108 		
    109 		# Cleanup lcov
    110 		${LCOV_PATH} --directory . --zerocounters
    111 		
    112 		# Run tests
    113 		COMMAND ${_testrunner} ${ARGV3}
    114 		
    115 		# Capturing lcov counters and generating report
    116 		COMMAND ${LCOV_PATH} --directory . --capture --output-file ${_outputname}.info
    117 		COMMAND ${LCOV_PATH} --remove ${_outputname}.info 'tests/*' '/usr/*' --output-file ${_outputname}.info.cleaned
    118 		COMMAND ${GENHTML_PATH} -o ${_outputname} ${_outputname}.info.cleaned
    119 		COMMAND ${CMAKE_COMMAND} -E remove ${_outputname}.info ${_outputname}.info.cleaned
    120 		
    121 		WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
    122 		COMMENT "Resetting code coverage counters to zero.\nProcessing code coverage counters and generating report."
    123 	)
    124 	
    125 	# Show info where to find the report
    126 	ADD_CUSTOM_COMMAND(TARGET ${_targetname} POST_BUILD
    127 		COMMAND ;
    128 		COMMENT "Open ./${_outputname}/index.html in your browser to view the coverage report."
    129 	)
    130 
    131 ENDFUNCTION() # SETUP_TARGET_FOR_COVERAGE
    132 
    133 # Param _targetname     The name of new the custom make target
    134 # Param _testrunner     The name of the target which runs the tests
    135 # Param _outputname     cobertura output is generated as _outputname.xml
    136 # Optional fourth parameter is passed as arguments to _testrunner
    137 #   Pass them in list form, e.g.: "-j;2" for -j 2
    138 FUNCTION(SETUP_TARGET_FOR_COVERAGE_COBERTURA _targetname _testrunner _outputname)
    139 
    140 	IF(NOT PYTHON_EXECUTABLE)
    141 		MESSAGE(FATAL_ERROR "Python not found! Aborting...")
    142 	ENDIF() # NOT PYTHON_EXECUTABLE
    143 
    144 	IF(NOT GCOVR_PATH)
    145 		MESSAGE(FATAL_ERROR "gcovr not found! Aborting...")
    146 	ENDIF() # NOT GCOVR_PATH
    147 
    148 	ADD_CUSTOM_TARGET(${_targetname}
    149 
    150 		# Run tests
    151 		${_testrunner} ${ARGV3}
    152 
    153 		# Running gcovr
    154 		COMMAND ${GCOVR_PATH} -x -r ${CMAKE_SOURCE_DIR} -e '${CMAKE_SOURCE_DIR}/tests/'  -o ${_outputname}.xml
    155 		WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
    156 		COMMENT "Running gcovr to produce Cobertura code coverage report."
    157 	)
    158 
    159 	# Show info where to find the report
    160 	ADD_CUSTOM_COMMAND(TARGET ${_targetname} POST_BUILD
    161 		COMMAND ;
    162 		COMMENT "Cobertura code coverage report saved in ${_outputname}.xml."
    163 	)
    164 
    165 ENDFUNCTION() # SETUP_TARGET_FOR_COVERAGE_COBERTURA
    166