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# Copyright (c) 2012 - 2017, Lars Bilke
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without modification,
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# are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its contributors
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# may be used to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# CHANGES:
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#
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# 2012-01-31, Lars Bilke
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# - Enable Code Coverage
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#
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# 2013-09-17, Joakim Söderberg
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# - Added support for Clang.
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# - Some additional usage instructions.
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#
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# 2016-02-03, Lars Bilke
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# - Refactored functions to use named parameters
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#
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# 2017-06-02, Lars Bilke
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# - Merged with modified version from github.com/ufz/ogs
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#
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#
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# USAGE:
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#
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# 1. Copy this file into your cmake modules path.
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#
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# 2. Add the following line to your CMakeLists.txt:
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# include(CodeCoverage)
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#
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# 3. Append necessary compiler flags:
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# APPEND_COVERAGE_COMPILER_FLAGS()
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#
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# 4. If you need to exclude additional directories from the report, specify them
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# using the COVERAGE_EXCLUDES variable before calling SETUP_TARGET_FOR_COVERAGE.
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# Example:
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# set(COVERAGE_EXCLUDES 'dir1/*' 'dir2/*')
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#
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# 5. Use the function SETUP_TARGET_FOR_COVERAGE to create a custom make target
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# which runs your test executable and produces a lcov code coverage report:
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# Example:
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# SETUP_TARGET_FOR_COVERAGE(
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# my_coverage_target # Name for custom target.
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# test_driver # Name of the test driver executable that runs the tests.
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# # NOTE! This should always have a ZERO as exit code
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# # otherwise the coverage generation will not complete.
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# coverage # Name of output directory.
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# )
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#
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# 6. Build a Debug build:
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# cmake -DCMAKE_BUILD_TYPE=Debug ..
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# make
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# make my_coverage_target
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#
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include(CMakeParseArguments)
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# Check prereqs
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find_program( GCOV_PATH gcov )
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find_program( LCOV_PATH lcov )
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find_program( GENHTML_PATH genhtml )
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find_program( GCOVR_PATH gcovr PATHS ${CMAKE_SOURCE_DIR}/scripts/test)
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find_program( SIMPLE_PYTHON_EXECUTABLE python )
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if(NOT GCOV_PATH)
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message(FATAL_ERROR "gcov not found! Aborting...")
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endif() # NOT GCOV_PATH
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if("${CMAKE_CXX_COMPILER_ID}" MATCHES "(Apple)?[Cc]lang")
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if("${CMAKE_CXX_COMPILER_VERSION}" VERSION_LESS 3)
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message(FATAL_ERROR "Clang version must be 3.0.0 or greater! Aborting...")
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endif()
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elseif(NOT CMAKE_COMPILER_IS_GNUCXX)
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message(FATAL_ERROR "Compiler is not GNU gcc! Aborting...")
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endif()
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set(COVERAGE_COMPILER_FLAGS "-g -O0 --coverage -fprofile-arcs -ftest-coverage"
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CACHE INTERNAL "")
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set(CMAKE_CXX_FLAGS_COVERAGE
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${COVERAGE_COMPILER_FLAGS}
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CACHE STRING "Flags used by the C++ compiler during coverage builds."
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FORCE )
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set(CMAKE_C_FLAGS_COVERAGE
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${COVERAGE_COMPILER_FLAGS}
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CACHE STRING "Flags used by the C compiler during coverage builds."
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FORCE )
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set(CMAKE_EXE_LINKER_FLAGS_COVERAGE
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""
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CACHE STRING "Flags used for linking binaries during coverage builds."
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FORCE )
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set(CMAKE_SHARED_LINKER_FLAGS_COVERAGE
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""
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CACHE STRING "Flags used by the shared libraries linker during coverage builds."
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FORCE )
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mark_as_advanced(
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CMAKE_CXX_FLAGS_COVERAGE
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CMAKE_C_FLAGS_COVERAGE
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CMAKE_EXE_LINKER_FLAGS_COVERAGE
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CMAKE_SHARED_LINKER_FLAGS_COVERAGE )
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if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
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message(WARNING "Code coverage results with an optimised (non-Debug) build may be misleading")
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endif() # NOT CMAKE_BUILD_TYPE STREQUAL "Debug"
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if(CMAKE_COMPILER_IS_GNUCXX)
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link_libraries(gcov)
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else()
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage")
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endif()
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# Defines a target for running and collection code coverage information
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# Builds dependencies, runs the given executable and outputs reports.
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# NOTE! The executable should always have a ZERO as exit code otherwise
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# the coverage generation will not complete.
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#
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# SETUP_TARGET_FOR_COVERAGE(
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# NAME testrunner_coverage # New target name
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# EXECUTABLE testrunner -j ${PROCESSOR_COUNT} # Executable in PROJECT_BINARY_DIR
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# DEPENDENCIES testrunner # Dependencies to build first
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# )
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function(SETUP_TARGET_FOR_COVERAGE)
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set(options NONE)
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set(oneValueArgs NAME TARGET OUTPUT)
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set(multiValueArgs EXECUTABLE EXECUTABLE_ARGS DEPENDENCIES)
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cmake_parse_arguments(Coverage "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
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if(NOT LCOV_PATH)
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message(FATAL_ERROR "lcov not found! Aborting...")
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endif() # NOT LCOV_PATH
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if(NOT GENHTML_PATH)
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message(FATAL_ERROR "genhtml not found! Aborting...")
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endif() # NOT GENHTML_PATH
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# Setup target
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add_custom_target(${Coverage_TARGET}
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# Cleanup lcov
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COMMAND ${LCOV_PATH} --directory . --zerocounters
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# Run tests
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COMMAND ${Coverage_EXECUTABLE}
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# Capturing lcov counters and generating report
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COMMAND ${LCOV_PATH} --directory . --capture --output-file ${Coverage_NAME}.info
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COMMAND ${LCOV_PATH} --remove ${Coverage_NAME}.info ${COVERAGE_EXCLUDES} --output-file ${Coverage_NAME}.info.cleaned
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COMMAND ${GENHTML_PATH} -o ${Coverage_OUTPUT} ${Coverage_NAME}.info.cleaned
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COMMAND ${CMAKE_COMMAND} -E remove ${Coverage_NAME}.info ${Coverage_NAME}.info.cleaned
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WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
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DEPENDS ${Coverage_DEPENDENCIES}
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COMMENT "Resetting code coverage counters to zero.\nProcessing code coverage counters and generating report."
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)
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# Show info where to find the report
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# message("Nome de la target ${Coverage_TARGET}")
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# add_custom_command(TARGET ${Coverage_TARGET} POST_BUILD
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# COMMAND ;
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# COMMENT "Open ./${Coverage_NAME}/index.html in your browser to view the coverage report."
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# )
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endfunction()
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function(APPEND_COVERAGE_COMPILER_FLAGS)
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set(CMAKE_C_FLAGS "${CMAKE_CXX_FLAGS} ${COVERAGE_COMPILER_FLAGS}" PARENT_SCOPE)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COVERAGE_COMPILER_FLAGS}" PARENT_SCOPE)
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message(STATUS "Appending code coverage compiler flags: ${COVERAGE_COMPILER_FLAGS}")
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endfunction() # APPEND_COVERAGE_COMPILER_FLAGS
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