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# - Enable Code Coverage
#
# 2012-01-31, Lars Bilke
#
# USAGE:
# 1. Copy this file into your cmake modules path
# 2. Add the following line to your CMakeLists.txt:
# INCLUDE(CodeCoverage)
#
# 3. Use the function SETUP_TARGET_FOR_COVERAGE to create a custom make target
# which runs your test executable and produces a lcov code coverage report.
#
# Check prereqs
FIND_PROGRAM( GCOV_PATH gcov )
FIND_PROGRAM( LCOV_PATH lcov )
FIND_PROGRAM( GENHTML_PATH genhtml )
IF(NOT GCOV_PATH)
MESSAGE(FATAL_ERROR "gcov not found! Aborting...")
ENDIF() # NOT GCOV_PATH
IF(NOT LCOV_PATH)
MESSAGE(FATAL_ERROR "lcov not found! Aborting...")
ENDIF() # NOT LCOV_PATH
IF(NOT GENHTML_PATH)
MESSAGE(FATAL_ERROR "genhtml not found! Aborting...")
ENDIF() # NOT GENHTML_PATH
IF(NOT CMAKE_COMPILER_IS_GNUCXX)
MESSAGE(FATAL_ERROR "Compiler is not GNU gcc! Aborting...")
ENDIF() # NOT CMAKE_COMPILER_IS_GNUCXX
IF ( NOT CMAKE_BUILD_TYPE STREQUAL "Debug" )
MESSAGE( WARNING "Code coverage results with an optimised (non-Debug) build may be misleading" )
ENDIF() # NOT CMAKE_BUILD_TYPE STREQUAL "Debug"
# Setup compiler options
ADD_DEFINITIONS(-fprofile-arcs -ftest-coverage)
LINK_LIBRARIES(gcov)
# Param _targetname The name of new the custom make target
# Param _testrunner The name of the target which runs the tests
# Param _outputname lcov output is generated as _outputname.info
# HTML report is generated in _outputname/index.html
FUNCTION(SETUP_TARGET_FOR_COVERAGE _targetname _testrunner _outputname)
# Setup target
ADD_CUSTOM_TARGET(${_targetname}
# Cleanup lcov
lcov --directory . --zerocounters
# Run tests
# Capturing lcov counters and generating report
COMMAND lcov --directory . --capture --output-file ${_outputname}.info
COMMAND lcov --remove ${_outputname}.info 'tests/*' '/usr/*' --output-file ${_outputname}.info.cleaned
COMMAND genhtml -o ${_outputname} ${_outputname}.info.cleaned
COMMAND ${CMAKE_COMMAND} -E remove ${_outputname}.info ${_outputname}.info.cleaned
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
COMMENT "Resetting code coverage counters to zero.\n
Processing code coverage counters and generating report."
)
# Show info where to find the report
ADD_CUSTOM_COMMAND(TARGET ${_targetname} POST_BUILD
COMMAND ;
COMMENT "Open ./${_outputname}/index.html in your browser to view the coverage report."
)
ENDFUNCTION() # SETUP_TARGET_FOR_COVERAGE