158 lines
5 KiB
CMake
158 lines
5 KiB
CMake
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# This file is part of CMake-codecov.
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#
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# Copyright (c)
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# 2015-2017 RWTH Aachen University, Federal Republic of Germany
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#
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# See the LICENSE file in the package base directory for details
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#
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# Written by Alexander Haase, alexander.haase@rwth-aachen.de
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#
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# include required Modules
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include(FindPackageHandleStandardArgs)
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# Search for gcov binary.
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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 ${ENABLED_LANGUAGES})
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# Gcov evaluation is dependent on the used compiler. Check gcov support for
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# each compiler that is used. If gcov binary was already found for this
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# compiler, do not try to find it again.
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if (NOT GCOV_${CMAKE_${LANG}_COMPILER_ID}_BIN)
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get_filename_component(COMPILER_PATH "${CMAKE_${LANG}_COMPILER}" PATH)
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if ("${CMAKE_${LANG}_COMPILER_ID}" STREQUAL "GNU")
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# Some distributions like OSX (homebrew) ship gcov with the compiler
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# version appended as gcov-x. To find this binary we'll build the
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# suggested binary name with the compiler version.
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string(REGEX MATCH "^[0-9]+" GCC_VERSION
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"${CMAKE_${LANG}_COMPILER_VERSION}")
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find_program(GCOV_BIN NAMES gcov-${GCC_VERSION} gcov
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HINTS ${COMPILER_PATH})
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elseif ("${CMAKE_${LANG}_COMPILER_ID}" STREQUAL "Clang")
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# Some distributions like Debian ship llvm-cov with the compiler
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# version appended as llvm-cov-x.y. To find this binary we'll build
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# the suggested binary name with the compiler version.
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string(REGEX MATCH "^[0-9]+.[0-9]+" LLVM_VERSION
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"${CMAKE_${LANG}_COMPILER_VERSION}")
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# llvm-cov prior version 3.5 seems to be not working with coverage
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# evaluation tools, but these versions are compatible with the gcc
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# gcov tool.
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if(LLVM_VERSION VERSION_GREATER 3.4)
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find_program(LLVM_COV_BIN NAMES "llvm-cov-${LLVM_VERSION}"
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"llvm-cov" HINTS ${COMPILER_PATH})
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mark_as_advanced(LLVM_COV_BIN)
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if (LLVM_COV_BIN)
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find_program(LLVM_COV_WRAPPER "llvm-cov-wrapper" PATHS
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${CMAKE_MODULE_PATH})
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if (LLVM_COV_WRAPPER)
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set(GCOV_BIN "${LLVM_COV_WRAPPER}" CACHE FILEPATH "")
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# set additional parameters
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set(GCOV_${CMAKE_${LANG}_COMPILER_ID}_ENV
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"LLVM_COV_BIN=${LLVM_COV_BIN}" CACHE STRING
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"Environment variables for llvm-cov-wrapper.")
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mark_as_advanced(GCOV_${CMAKE_${LANG}_COMPILER_ID}_ENV)
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endif ()
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endif ()
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endif ()
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if (NOT GCOV_BIN)
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# Fall back to gcov binary if llvm-cov was not found or is
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# incompatible. This is the default on OSX, but may crash on
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# recent Linux versions.
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find_program(GCOV_BIN gcov HINTS ${COMPILER_PATH})
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endif ()
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endif ()
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if (GCOV_BIN)
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set(GCOV_${CMAKE_${LANG}_COMPILER_ID}_BIN "${GCOV_BIN}" CACHE STRING
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"${LANG} gcov binary.")
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if (NOT CMAKE_REQUIRED_QUIET)
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message("-- Found gcov evaluation for "
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"${CMAKE_${LANG}_COMPILER_ID}: ${GCOV_BIN}")
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endif()
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unset(GCOV_BIN CACHE)
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endif ()
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endif ()
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endforeach ()
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# Add a new global target for all gcov targets. This target could be used to
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# generate the gcov files for the whole project instead of calling <TARGET>-gcov
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# for each target.
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if (NOT TARGET gcov)
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add_custom_target(gcov)
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endif (NOT TARGET gcov)
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# This function will add gcov evaluation for target <TNAME>. Only sources of
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# this target will be evaluated and no dependencies will be added. It will call
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# Gcov on any source file of <TNAME> once and store the gcov file in the same
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# directory.
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function (add_gcov_target TNAME)
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set(TDIR ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${TNAME}.dir)
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# We don't have to check, if the target has support for coverage, thus this
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# will be checked by add_coverage_target in Findcoverage.cmake. Instead we
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# have to determine which gcov binary to use.
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get_target_property(TSOURCES ${TNAME} SOURCES)
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set(SOURCES "")
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set(TCOMPILER "")
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foreach (FILE ${TSOURCES})
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codecov_path_of_source(${FILE} FILE)
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if (NOT "${FILE}" STREQUAL "")
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codecov_lang_of_source(${FILE} LANG)
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if (NOT "${LANG}" STREQUAL "")
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list(APPEND SOURCES "${FILE}")
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set(TCOMPILER ${CMAKE_${LANG}_COMPILER_ID})
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endif ()
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endif ()
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endforeach ()
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# If no gcov binary was found, coverage data can't be evaluated.
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if (NOT GCOV_${TCOMPILER}_BIN)
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message(WARNING "No coverage evaluation binary found for ${TCOMPILER}.")
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return()
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endif ()
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set(GCOV_BIN "${GCOV_${TCOMPILER}_BIN}")
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set(GCOV_ENV "${GCOV_${TCOMPILER}_ENV}")
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set(BUFFER "")
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foreach(FILE ${SOURCES})
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get_filename_component(FILE_PATH "${TDIR}/${FILE}" PATH)
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# call gcov
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add_custom_command(OUTPUT ${TDIR}/${FILE}.gcov
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COMMAND ${GCOV_ENV} ${GCOV_BIN} ${TDIR}/${FILE}.gcno > /dev/null
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DEPENDS ${TNAME} ${TDIR}/${FILE}.gcno
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WORKING_DIRECTORY ${FILE_PATH}
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)
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list(APPEND BUFFER ${TDIR}/${FILE}.gcov)
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endforeach()
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# add target for gcov evaluation of <TNAME>
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add_custom_target(${TNAME}-gcov DEPENDS ${BUFFER})
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# add evaluation target to the global gcov target.
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add_dependencies(gcov ${TNAME}-gcov)
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endfunction (add_gcov_target)
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