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1 # Copyright (c) 2012 - 2017, Lars Bilke
2 # All rights reserved.
4 # Redistribution and use in source and binary forms, with or without modification,
5 # are permitted provided that the following conditions are met:
7 # 1. Redistributions of source code must retain the above copyright notice, this
8 #    list of conditions and the following disclaimer.
10 # 2. Redistributions in binary form must reproduce the above copyright notice,
11 #    this list of conditions and the following disclaimer in the documentation
12 #    and/or other materials provided with the distribution.
14 # 3. Neither the name of the copyright holder nor the names of its contributors
15 #    may be used to endorse or promote products derived from this software without
16 #    specific prior written permission.
18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
22 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
25 # ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 # CHANGES:
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.
38 # 2016-02-03, Lars Bilke
39 # - Refactored functions to use named parameters
41 # 2017-06-02, Lars Bilke
42 # - Merged with modified version from github.com/ufz/ogs
45 # USAGE:
47 # 1. Copy this file into your cmake modules path.
49 # 2. Add the following line to your CMakeLists.txt:
50 #      include(CodeCoverage)
52 # 3. Append necessary compiler flags:
53 #      APPEND_COVERAGE_COMPILER_FLAGS()
55 # 4. If you need to exclude additional directories from the report, specify them
56 #    using the COVERAGE_EXCLUDES variable before calling SETUP_TARGET_FOR_COVERAGE.
57 #    Example:
58 #      set(COVERAGE_EXCLUDES 'dir1/*' 'dir2/*')
60 # 5. Use the functions described below to create a custom make target which
61 #    runs your test executable and produces a code coverage report.
63 # 6. Build a Debug build:
64 #      cmake -DCMAKE_BUILD_TYPE=Debug ..
65 #      make
66 #      make my_coverage_target
69 include(CMakeParseArguments)
71 # Check prereqs
72 find_program( GCOV_PATH gcov )
73 find_program( LCOV_PATH  NAMES lcov lcov.bat lcov.exe lcov.perl)
74 find_program( GENHTML_PATH NAMES genhtml genhtml.perl genhtml.bat )
75 find_program( GCOVR_PATH gcovr PATHS ${CMAKE_SOURCE_DIR}/scripts/test)
76 find_program( SIMPLE_PYTHON_EXECUTABLE python )
78 if(NOT GCOV_PATH)
79     message(FATAL_ERROR "gcov not found! Aborting...")
80 endif() # NOT GCOV_PATH
82 if("${CMAKE_CXX_COMPILER_ID}" MATCHES "(Apple)?[Cc]lang")
83     if("${CMAKE_CXX_COMPILER_VERSION}" VERSION_LESS 3)
84         message(FATAL_ERROR "Clang version must be 3.0.0 or greater! Aborting...")
85     endif()
86 elseif(NOT CMAKE_COMPILER_IS_GNUCXX)
87     message(FATAL_ERROR "Compiler is not GNU gcc! Aborting...")
88 endif()
90 set(COVERAGE_COMPILER_FLAGS "-g -O0 --coverage -fprofile-arcs -ftest-coverage"
91     CACHE INTERNAL "")
93 set(CMAKE_CXX_FLAGS_COVERAGE
94     ${COVERAGE_COMPILER_FLAGS}
95     CACHE STRING "Flags used by the C++ compiler during coverage builds."
96     FORCE )
97 set(CMAKE_C_FLAGS_COVERAGE
98     ${COVERAGE_COMPILER_FLAGS}
99     CACHE STRING "Flags used by the C compiler during coverage builds."
100     FORCE )
101 set(CMAKE_EXE_LINKER_FLAGS_COVERAGE
102     ""
103     CACHE STRING "Flags used for linking binaries during coverage builds."
104     FORCE )
105 set(CMAKE_SHARED_LINKER_FLAGS_COVERAGE
106     ""
107     CACHE STRING "Flags used by the shared libraries linker during coverage builds."
108     FORCE )
109 mark_as_advanced(
110     CMAKE_CXX_FLAGS_COVERAGE
111     CMAKE_C_FLAGS_COVERAGE
112     CMAKE_EXE_LINKER_FLAGS_COVERAGE
113     CMAKE_SHARED_LINKER_FLAGS_COVERAGE )
115 if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
116     message(WARNING "Code coverage results with an optimised (non-Debug) build may be misleading")
117 endif() # NOT CMAKE_BUILD_TYPE STREQUAL "Debug"
119 if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
120     link_libraries(gcov)
121 else()
122     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage")
123 endif()
125 # Defines a target for running and collection code coverage information
126 # Builds dependencies, runs the given executable and outputs reports.
127 # NOTE! The executable should always have a ZERO as exit code otherwise
128 # the coverage generation will not complete.
130 # SETUP_TARGET_FOR_COVERAGE(
131 #     NAME testrunner_coverage                    # New target name
132 #     EXECUTABLE testrunner -j ${PROCESSOR_COUNT} # Executable in PROJECT_BINARY_DIR
133 #     DEPENDENCIES testrunner                     # Dependencies to build first
134 # )
135 function(SETUP_TARGET_FOR_COVERAGE)
137     set(options NONE)
138     set(oneValueArgs NAME)
139     set(multiValueArgs EXECUTABLE EXECUTABLE_ARGS DEPENDENCIES)
140     cmake_parse_arguments(Coverage "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
142     if(NOT LCOV_PATH)
143         message(FATAL_ERROR "lcov not found! Aborting...")
144     endif() # NOT LCOV_PATH
146     if(NOT GENHTML_PATH)
147         message(FATAL_ERROR "genhtml not found! Aborting...")
148     endif() # NOT GENHTML_PATH
150     # Setup target
151     add_custom_target(${Coverage_NAME}
153         # Cleanup lcov
154         COMMAND ${LCOV_PATH} --directory . --zerocounters
155         # Create baseline to make sure untouched files show up in the report
156         COMMAND ${LCOV_PATH} -c -i -d . -o ${Coverage_NAME}.base
158         # Run tests
159         COMMAND ${Coverage_EXECUTABLE}
161         # Capturing lcov counters and generating report
162         COMMAND ${LCOV_PATH} --directory . --capture --output-file ${Coverage_NAME}.info
163         # add baseline counters
164         COMMAND ${LCOV_PATH} -a ${Coverage_NAME}.base -a ${Coverage_NAME}.info --output-file ${Coverage_NAME}.total
165         COMMAND ${LCOV_PATH} --remove ${Coverage_NAME}.total ${COVERAGE_EXCLUDES} --output-file ${PROJECT_BINARY_DIR}/${Coverage_NAME}.info.cleaned
166         COMMAND ${GENHTML_PATH} -o ${Coverage_NAME} ${PROJECT_BINARY_DIR}/${Coverage_NAME}.info.cleaned
167         COMMAND ${CMAKE_COMMAND} -E remove ${Coverage_NAME}.base ${Coverage_NAME}.info ${Coverage_NAME}.total ${PROJECT_BINARY_DIR}/${Coverage_NAME}.info.cleaned
169         WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
170         DEPENDS ${Coverage_DEPENDENCIES}
171         COMMENT "Resetting code coverage counters to zero.\nProcessing code coverage counters and generating report."
172     )
174     # Show info where to find the report
175     add_custom_command(TARGET ${Coverage_NAME} POST_BUILD
176         COMMAND ;
177         COMMENT "Open ./${Coverage_NAME}/index.html in your browser to view the coverage report."
178     )
180 endfunction() # SETUP_TARGET_FOR_COVERAGE
182 # Defines a target for running and collection code coverage information
183 # Builds dependencies, runs the given executable and outputs reports.
184 # NOTE! The executable should always have a ZERO as exit code otherwise
185 # the coverage generation will not complete.
187 # SETUP_TARGET_FOR_COVERAGE_COBERTURA(
188 #     NAME ctest_coverage                    # New target name
189 #     EXECUTABLE ctest -j ${PROCESSOR_COUNT} # Executable in PROJECT_BINARY_DIR
190 #     DEPENDENCIES executable_target         # Dependencies to build first
191 # )
192 function(SETUP_TARGET_FOR_COVERAGE_COBERTURA)
194     set(options NONE)
195     set(oneValueArgs NAME)
196     set(multiValueArgs EXECUTABLE EXECUTABLE_ARGS DEPENDENCIES)
197     cmake_parse_arguments(Coverage "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
199     if(NOT SIMPLE_PYTHON_EXECUTABLE)
200         message(FATAL_ERROR "python not found! Aborting...")
201     endif() # NOT SIMPLE_PYTHON_EXECUTABLE
203     if(NOT GCOVR_PATH)
204         message(FATAL_ERROR "gcovr not found! Aborting...")
205     endif() # NOT GCOVR_PATH
207     # Combine excludes to several -e arguments
208     set(COBERTURA_EXCLUDES "")
209     foreach(EXCLUDE ${COVERAGE_EXCLUDES})
210         set(COBERTURA_EXCLUDES "-e ${EXCLUDE} ${COBERTURA_EXCLUDES}")
211     endforeach()
213     add_custom_target(${Coverage_NAME}
215         # Run tests
216         ${Coverage_EXECUTABLE}
218         # Running gcovr
219         COMMAND ${GCOVR_PATH} -x -r ${CMAKE_SOURCE_DIR} ${COBERTURA_EXCLUDES}
220             -o ${Coverage_NAME}.xml
221         WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
222         DEPENDS ${Coverage_DEPENDENCIES}
223         COMMENT "Running gcovr to produce Cobertura code coverage report."
224     )
226     # Show info where to find the report
227     add_custom_command(TARGET ${Coverage_NAME} POST_BUILD
228         COMMAND ;
229         COMMENT "Cobertura code coverage report saved in ${Coverage_NAME}.xml."
230     )
232 endfunction() # SETUP_TARGET_FOR_COVERAGE_COBERTURA
234 function(APPEND_COVERAGE_COMPILER_FLAGS)
235     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COVERAGE_COMPILER_FLAGS}" PARENT_SCOPE)
236     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COVERAGE_COMPILER_FLAGS}" PARENT_SCOPE)
237     message(STATUS "Appending code coverage compiler flags: ${COVERAGE_COMPILER_FLAGS}")
238 endfunction() # APPEND_COVERAGE_COMPILER_FLAGS