203 lines
6.7 KiB
CMake
203 lines
6.7 KiB
CMake
# This file is part of CMake-codecov.
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#
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# https://github.com/RWTH-ELP/CMake-codecov
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#
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# Copyright (c)
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# 2015-2016 RWTH Aachen University, Federal Republic of Germany
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#
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# LICENSE : BSD 3-Clause License
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#
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# Written by Alexander Haase, alexander.haase@rwth-aachen.de
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# Updated by Guillaume Jacquenot, guillaume.jacquenot@gmail.com
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set(COVERAGE_FLAG_CANDIDATES
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# gcc and clang
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"-O0 -g -fprofile-arcs -ftest-coverage"
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# gcc and clang fallback
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"-O0 -g --coverage"
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)
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# To avoid error messages about CMP0051, this policy will be set to new. There
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# will be no problem, as TARGET_OBJECTS generator expressions will be filtered
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# with a regular expression from the sources.
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if(POLICY CMP0051)
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cmake_policy(SET CMP0051 NEW)
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endif()
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# Add coverage support for target ${TNAME} and register target for coverage
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# evaluation.
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function(add_coverage TNAME)
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foreach (TNAME ${ARGV})
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add_coverage_target(${TNAME})
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endforeach()
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endfunction()
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# Find the reuired flags foreach language.
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set(CMAKE_REQUIRED_QUIET_SAVE ${CMAKE_REQUIRED_QUIET})
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set(CMAKE_REQUIRED_QUIET ${codecov_FIND_QUIETLY})
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get_property(ENABLED_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
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foreach (LANG ${ENABLED_LANGUAGES})
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# Coverage flags are not dependent on language, but the used compiler. So
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# instead of searching flags foreach language, search flags foreach compiler
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# used.
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set(COMPILER ${CMAKE_${LANG}_COMPILER_ID})
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if(NOT COVERAGE_${COMPILER}_FLAGS)
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foreach (FLAG ${COVERAGE_FLAG_CANDIDATES})
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if(NOT CMAKE_REQUIRED_QUIET)
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message(STATUS "Try ${COMPILER} code coverage flag = [${FLAG}]")
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endif()
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set(CMAKE_REQUIRED_FLAGS "${FLAG}")
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unset(COVERAGE_FLAG_DETECTED CACHE)
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if(${LANG} STREQUAL "C")
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include(CheckCCompilerFlag)
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check_c_compiler_flag("${FLAG}" COVERAGE_FLAG_DETECTED)
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elseif(${LANG} STREQUAL "CXX")
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include(CheckCXXCompilerFlag)
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check_cxx_compiler_flag("${FLAG}" COVERAGE_FLAG_DETECTED)
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elseif(${LANG} STREQUAL "Fortran")
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# CheckFortranCompilerFlag was introduced in CMake 3.x. To be
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# compatible with older Cmake versions, we will check if this
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# module is present before we use it. Otherwise we will define
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# Fortran coverage support as not available.
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include(CheckFortranCompilerFlag OPTIONAL
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RESULT_VARIABLE INCLUDED)
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if(INCLUDED)
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check_fortran_compiler_flag("${FLAG}"
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COVERAGE_FLAG_DETECTED)
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elseif(NOT CMAKE_REQUIRED_QUIET)
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message("-- Performing Test COVERAGE_FLAG_DETECTED")
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message("-- Performing Test COVERAGE_FLAG_DETECTED - Failed"
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" (Check not supported)")
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endif()
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endif()
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if(COVERAGE_FLAG_DETECTED)
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set(COVERAGE_${COMPILER}_FLAGS "${FLAG}"
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CACHE STRING "${COMPILER} flags for code coverage.")
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mark_as_advanced(COVERAGE_${COMPILER}_FLAGS)
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break()
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endif()
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endforeach()
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endif()
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endforeach()
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set(CMAKE_REQUIRED_QUIET ${CMAKE_REQUIRED_QUIET_SAVE})
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# Helper function to get the language of a source file.
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function (codecov_lang_of_source FILE RETURN_VAR)
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get_filename_component(FILE_EXT "${FILE}" EXT)
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string(TOLOWER "${FILE_EXT}" FILE_EXT)
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string(SUBSTRING "${FILE_EXT}" 1 -1 FILE_EXT)
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get_property(ENABLED_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
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foreach (LANG ${ENABLED_LANGUAGES})
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list(FIND CMAKE_${LANG}_SOURCE_FILE_EXTENSIONS "${FILE_EXT}" TEMP)
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if(NOT ${TEMP} EQUAL -1)
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set(${RETURN_VAR} "${LANG}" PARENT_SCOPE)
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return()
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endif()
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endforeach()
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set(${RETURN_VAR} "" PARENT_SCOPE)
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endfunction()
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# Helper function to get the relative path of the source file destination path.
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# This path is needed by FindGcov and FindLcov cmake files to locate the
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# captured data.
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function (codecov_path_of_source FILE RETURN_VAR)
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string(REGEX MATCH "TARGET_OBJECTS:([^ >]+)" _source ${FILE})
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# If expression was found, SOURCEFILE is a generator-expression for an
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# object library. Currently we found no way to call this function automatic
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# for the referenced target, so it must be called in the directoryso of the
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# object library definition.
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if(NOT "${_source}" STREQUAL "")
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set(${RETURN_VAR} "" PARENT_SCOPE)
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return()
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endif()
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string(REPLACE "${CMAKE_CURRENT_BINARY_DIR}/" "" FILE "${FILE}")
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if(IS_ABSOLUTE ${FILE})
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file(RELATIVE_PATH FILE ${CMAKE_CURRENT_SOURCE_DIR} ${FILE})
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endif()
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# get the right path for file
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string(REPLACE ".." "__" PATH "${FILE}")
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set(${RETURN_VAR} "${PATH}" PARENT_SCOPE)
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endfunction()
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# Add coverage support for target ${TNAME} and register target for coverage
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# evaluation.
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function(add_coverage_target TNAME)
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# Check if all sources for target use the same compiler. If a target uses
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# e.g. C and Fortran mixed and uses different compilers (e.g. clang and
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# gfortran) this can trigger huge problems, because different compilers may
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# use different implementations for code coverage.
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get_target_property(TSOURCES ${TNAME} SOURCES)
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set(TARGET_COMPILER "")
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set(ADDITIONAL_FILES "")
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foreach (FILE ${TSOURCES})
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# If expression was found, FILE is a generator-expression for an object
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# library. Object libraries will be ignored.
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string(REGEX MATCH "TARGET_OBJECTS:([^ >]+)" _file ${FILE})
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if("${_file}" STREQUAL "")
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codecov_lang_of_source(${FILE} LANG)
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if(LANG)
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list(APPEND TARGET_COMPILER ${CMAKE_${LANG}_COMPILER_ID})
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list(APPEND ADDITIONAL_FILES "${FILE}.gcno")
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list(APPEND ADDITIONAL_FILES "${FILE}.gcda")
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endif()
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endif()
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endforeach ()
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list(REMOVE_DUPLICATES TARGET_COMPILER)
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list(LENGTH TARGET_COMPILER NUM_COMPILERS)
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if(NUM_COMPILERS GREATER 1)
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message(AUTHOR_WARNING "Coverage disabled for target ${TNAME} because "
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"it will be compiled by different compilers.")
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return()
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elseif((NUM_COMPILERS EQUAL 0) OR
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(NOT DEFINED "COVERAGE_${TARGET_COMPILER}_FLAGS"))
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message(AUTHOR_WARNING "Coverage disabled for target ${TNAME} "
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"because there is no sanitizer available for target sources.")
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return()
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endif()
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# enable coverage for target
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set_property(TARGET ${TNAME} APPEND_STRING
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PROPERTY COMPILE_FLAGS " ${COVERAGE_${TARGET_COMPILER}_FLAGS}")
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set_property(TARGET ${TNAME} APPEND_STRING
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PROPERTY LINK_FLAGS " ${COVERAGE_${TARGET_COMPILER}_FLAGS}")
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# Add gcov files generated by compiler to clean target.
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set(CLEAN_FILES "")
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foreach (FILE ${ADDITIONAL_FILES})
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codecov_path_of_source(${FILE} FILE)
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list(APPEND CLEAN_FILES "CMakeFiles/${TNAME}.dir/${FILE}")
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endforeach()
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set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES
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"${CLEAN_FILES}")
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add_gcov_target(${TNAME})
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endfunction()
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# Include modules for parsing the collected data and output it in a readable
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# format (like gcov).
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find_package(Gcov)
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