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Diffstat (limited to 'cmake/FindLcov.cmake')
| -rw-r--r-- | cmake/FindLcov.cmake | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/cmake/FindLcov.cmake b/cmake/FindLcov.cmake new file mode 100644 index 0000000..f92fca3 --- /dev/null +++ b/cmake/FindLcov.cmake @@ -0,0 +1,365 @@ +# This file is part of CMake-codecov. +# +# CMake-codecov is free software: you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free Software +# Foundation, either version 3 of the License, or (at your option) any later +# version. +# +# This program is distributed in the hope that it will be useful,but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +# FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program. If not, see +# +# http://www.gnu.org/licenses/ +# +# +# Copyright (c) +# 2015-2016 RWTH Aachen University, Federal Republic of Germany +# +# Written by Alexander Haase, alexander.haase@rwth-aachen.de +# + + +# configuration +set(LCOV_DATA_PATH "${CMAKE_BINARY_DIR}/lcov/data") +set(LCOV_DATA_PATH_INIT "${LCOV_DATA_PATH}/init") +set(LCOV_DATA_PATH_CAPTURE "${LCOV_DATA_PATH}/capture") +set(LCOV_HTML_PATH "${CMAKE_BINARY_DIR}/lcov/html") + + + + +# Search for Gcov which is used by Lcov. +find_package(Gcov) + + + + +# This function will add lcov evaluation for target <TNAME>. Only sources of +# this target will be evaluated and no dependencies will be added. It will call +# geninfo on any source file of <TNAME> once and store the info file in the same +# directory. +# +# Note: This function is only a wrapper to define this function always, even if +# coverage is not supported by the compiler or disabled. This function must +# be defined here, because the module will be exited, if there is no coverage +# support by the compiler or it is disabled by the user. +function (add_lcov_target TNAME) + if (LCOV_FOUND) + # capture initial coverage data + lcov_capture_initial_tgt(${TNAME}) + + # capture coverage data after execution + lcov_capture_tgt(${TNAME}) + endif () +endfunction (add_lcov_target) + + + + +# include required Modules +include(FindPackageHandleStandardArgs) + +# Search for required lcov binaries. +find_program(LCOV_BIN lcov) +find_program(GENINFO_BIN geninfo) +find_program(GENHTML_BIN genhtml) +find_package_handle_standard_args(lcov + REQUIRED_VARS LCOV_BIN GENINFO_BIN GENHTML_BIN +) + +# enable genhtml C++ demangeling, if c++filt is found. +set(GENHTML_CPPFILT_FLAG "") +find_program(CPPFILT_BIN c++filt) +if (NOT CPPFILT_BIN STREQUAL "") + set(GENHTML_CPPFILT_FLAG "--demangle-cpp") +endif (NOT CPPFILT_BIN STREQUAL "") + +# enable no-external flag for lcov, if available. +if (GENINFO_BIN AND NOT DEFINED GENINFO_EXTERN_FLAG) + set(FLAG "") + execute_process(COMMAND ${GENINFO_BIN} --help OUTPUT_VARIABLE GENINFO_HELP) + string(REGEX MATCH "external" GENINFO_RES "${GENINFO_HELP}") + if (GENINFO_RES) + set(FLAG "--no-external") + endif () + + set(GENINFO_EXTERN_FLAG "${FLAG}" + CACHE STRING "Geninfo flag to exclude system sources.") +endif () + +# If Lcov was not found, exit module now. +if (NOT LCOV_FOUND) + return() +endif (NOT LCOV_FOUND) + + + + +# Create directories to be used. +file(MAKE_DIRECTORY ${LCOV_DATA_PATH_INIT}) +file(MAKE_DIRECTORY ${LCOV_DATA_PATH_CAPTURE}) + + +# This function will merge lcov files to a single target file. Additional lcov +# flags may be set with setting LCOV_EXTRA_FLAGS before calling this function. +function (lcov_merge_files OUTFILE ...) + # Remove ${OUTFILE} from ${ARGV} and generate lcov parameters with files. + list(REMOVE_AT ARGV 0) + + # Generate merged file. + string(REPLACE "${CMAKE_BINARY_DIR}/" "" FILE_REL "${OUTFILE}") + add_custom_command(OUTPUT "${OUTFILE}.raw" + COMMAND cat ${ARGV} > ${OUTFILE}.raw + DEPENDS ${ARGV} + COMMENT "Generating ${FILE_REL}" + ) + + add_custom_command(OUTPUT "${OUTFILE}" + COMMAND ${LCOV_BIN} --quiet -a ${OUTFILE}.raw --output-file ${OUTFILE} + --base-directory ${PROJECT_SOURCE_DIR} ${LCOV_EXTRA_FLAGS} + DEPENDS ${OUTFILE}.raw + COMMENT "Post-processing ${FILE_REL}" + ) +endfunction () + + + + +# Add a new global target to generate initial coverage reports for all targets. +# This target will be used to generate the global initial info file, which is +# used to gather even empty report data. +if (NOT TARGET lcov-capture-init) + add_custom_target(lcov-capture-init) + set(LCOV_CAPTURE_INIT_FILES "" CACHE INTERNAL "") +endif (NOT TARGET lcov-capture-init) + + +# This function will add initial capture of coverage data for target <TNAME>, +# which is needed to get also data for objects, which were not loaded at +# execution time. It will call geninfo for every source file of <TNAME> once and +# store the info file in the same directory. +function (lcov_capture_initial_tgt TNAME) + # We don't have to check, if the target has support for coverage, thus this + # will be checked by add_coverage_target in Findcoverage.cmake. Instead we + # have to determine which gcov binary to use. + get_target_property(TSOURCES ${TNAME} SOURCES) + set(SOURCES "") + set(TCOMPILER "") + foreach (FILE ${TSOURCES}) + codecov_path_of_source(${FILE} FILE) + if (NOT "${FILE}" STREQUAL "") + codecov_lang_of_source(${FILE} LANG) + if (NOT "${LANG}" STREQUAL "") + list(APPEND SOURCES "${FILE}") + set(TCOMPILER ${CMAKE_${LANG}_COMPILER_ID}) + endif () + endif () + endforeach () + + # If no gcov binary was found, coverage data can't be evaluated. + if (NOT GCOV_${TCOMPILER}_BIN) + message(WARNING "No coverage evaluation binary found for ${TCOMPILER}.") + return() + endif () + + set(GCOV_BIN "${GCOV_${TCOMPILER}_BIN}") + set(GCOV_ENV "${GCOV_${TCOMPILER}_ENV}") + + + set(TDIR ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${TNAME}.dir) + set(GENINFO_FILES "") + foreach(FILE ${SOURCES}) + # generate empty coverage files + set(OUTFILE "${TDIR}/${FILE}.info.init") + list(APPEND GENINFO_FILES ${OUTFILE}) + + add_custom_command(OUTPUT ${OUTFILE} COMMAND ${GCOV_ENV} ${GENINFO_BIN} + --quiet --base-directory ${PROJECT_SOURCE_DIR} --initial + --gcov-tool ${GCOV_BIN} --output-filename ${OUTFILE} + ${GENINFO_EXTERN_FLAG} ${TDIR}/${FILE}.gcno + DEPENDS ${TNAME} + COMMENT "Capturing initial coverage data for ${FILE}" + ) + endforeach() + + # Concatenate all files generated by geninfo to a single file per target. + set(OUTFILE "${LCOV_DATA_PATH_INIT}/${TNAME}.info") + set(LCOV_EXTRA_FLAGS "--initial") + lcov_merge_files("${OUTFILE}" ${GENINFO_FILES}) + add_custom_target(${TNAME}-capture-init ALL DEPENDS ${OUTFILE}) + + # add geninfo file generation to global lcov-geninfo target + add_dependencies(lcov-capture-init ${TNAME}-capture-init) + set(LCOV_CAPTURE_INIT_FILES "${LCOV_CAPTURE_INIT_FILES}" + "${OUTFILE}" CACHE INTERNAL "" + ) +endfunction (lcov_capture_initial_tgt) + + +# This function will generate the global info file for all targets. It has to be +# called after all other CMake functions in the root CMakeLists.txt file, to get +# a full list of all targets that generate coverage data. +function (lcov_capture_initial) + # Skip this function (and do not create the following targets), if there are + # no input files. + if ("${LCOV_CAPTURE_INIT_FILES}" STREQUAL "") + return() + endif () + + # Add a new target to merge the files of all targets. + set(OUTFILE "${LCOV_DATA_PATH_INIT}/all_targets.info") + lcov_merge_files("${OUTFILE}" ${LCOV_CAPTURE_INIT_FILES}) + add_custom_target(lcov-geninfo-init ALL DEPENDS ${OUTFILE} + lcov-capture-init + ) +endfunction (lcov_capture_initial) + + + + +# Add a new global target to generate coverage reports for all targets. This +# target will be used to generate the global info file. +if (NOT TARGET lcov-capture) + add_custom_target(lcov-capture) + set(LCOV_CAPTURE_FILES "" CACHE INTERNAL "") +endif (NOT TARGET lcov-capture) + + +# This function will add capture of coverage data for target <TNAME>, which is +# needed to get also data for objects, which were not loaded at execution time. +# It will call geninfo for every source file of <TNAME> once and store the info +# file in the same directory. +function (lcov_capture_tgt TNAME) + # We don't have to check, if the target has support for coverage, thus this + # will be checked by add_coverage_target in Findcoverage.cmake. Instead we + # have to determine which gcov binary to use. + get_target_property(TSOURCES ${TNAME} SOURCES) + set(SOURCES "") + set(TCOMPILER "") + foreach (FILE ${TSOURCES}) + codecov_path_of_source(${FILE} FILE) + if (NOT "${FILE}" STREQUAL "") + codecov_lang_of_source(${FILE} LANG) + if (NOT "${LANG}" STREQUAL "") + list(APPEND SOURCES "${FILE}") + set(TCOMPILER ${CMAKE_${LANG}_COMPILER_ID}) + endif () + endif () + endforeach () + + # If no gcov binary was found, coverage data can't be evaluated. + if (NOT GCOV_${TCOMPILER}_BIN) + message(WARNING "No coverage evaluation binary found for ${TCOMPILER}.") + return() + endif () + + set(GCOV_BIN "${GCOV_${TCOMPILER}_BIN}") + set(GCOV_ENV "${GCOV_${TCOMPILER}_ENV}") + + + set(TDIR ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${TNAME}.dir) + set(GENINFO_FILES "") + foreach(FILE ${SOURCES}) + # Generate coverage files. If no .gcda file was generated during + # execution, the empty coverage file will be used instead. + set(OUTFILE "${TDIR}/${FILE}.info") + list(APPEND GENINFO_FILES ${OUTFILE}) + + add_custom_command(OUTPUT ${OUTFILE} + COMMAND test -f "${TDIR}/${FILE}.gcda" + && ${GCOV_ENV} ${GENINFO_BIN} --quiet --base-directory + ${PROJECT_SOURCE_DIR} --gcov-tool ${GCOV_BIN} + --output-filename ${OUTFILE} ${GENINFO_EXTERN_FLAG} + ${TDIR}/${FILE}.gcda + || cp ${OUTFILE}.init ${OUTFILE} + DEPENDS ${TNAME} ${TNAME}-capture-init + COMMENT "Capturing coverage data for ${FILE}" + ) + endforeach() + + # Concatenate all files generated by geninfo to a single file per target. + set(OUTFILE "${LCOV_DATA_PATH_CAPTURE}/${TNAME}.info") + lcov_merge_files("${OUTFILE}" ${GENINFO_FILES}) + add_custom_target(${TNAME}-geninfo DEPENDS ${OUTFILE}) + + # add geninfo file generation to global lcov-capture target + add_dependencies(lcov-capture ${TNAME}-geninfo) + set(LCOV_CAPTURE_FILES "${LCOV_CAPTURE_FILES}" "${OUTFILE}" CACHE INTERNAL + "" + ) + + # Add target for generating html output for this target only. + file(MAKE_DIRECTORY ${LCOV_HTML_PATH}/${TNAME}) + add_custom_target(${TNAME}-genhtml + COMMAND ${GENHTML_BIN} --quiet --sort --prefix ${PROJECT_SOURCE_DIR} + --baseline-file ${LCOV_DATA_PATH_INIT}/${TNAME}.info + --output-directory ${LCOV_HTML_PATH}/${TNAME} + --title "${CMAKE_PROJECT_NAME} - target ${TNAME}" + ${GENHTML_CPPFILT_FLAG} ${OUTFILE} + DEPENDS ${TNAME}-geninfo ${TNAME}-capture-init + ) +endfunction (lcov_capture_tgt) + + +# This function will generate the global info file for all targets. It has to be +# called after all other CMake functions in the root CMakeLists.txt file, to get +# a full list of all targets that generate coverage data. +function (lcov_capture) + # Skip this function (and do not create the following targets), if there are + # no input files. + if ("${LCOV_CAPTURE_FILES}" STREQUAL "") + return() + endif () + + # Add a new target to merge the files of all targets. + set(OUTFILE "${LCOV_DATA_PATH_CAPTURE}/all_targets.info") + lcov_merge_files("${OUTFILE}" ${LCOV_CAPTURE_FILES}) + add_custom_target(lcov-geninfo DEPENDS ${OUTFILE} lcov-capture) + + # Add a new global target for all lcov targets. This target could be used to + # generate the lcov html output for the whole project instead of calling + # <TARGET>-geninfo and <TARGET>-genhtml for each target. It will also be + # used to generate a html site for all project data together instead of one + # for each target. + if (NOT TARGET lcov) + file(MAKE_DIRECTORY ${LCOV_HTML_PATH}/all_targets) + add_custom_target(lcov + COMMAND ${GENHTML_BIN} --quiet --sort + --baseline-file ${LCOV_DATA_PATH_INIT}/all_targets.info + --output-directory ${LCOV_HTML_PATH}/all_targets + --title "${CMAKE_PROJECT_NAME}" --prefix "${PROJECT_SOURCE_DIR}" + ${GENHTML_CPPFILT_FLAG} ${OUTFILE} + DEPENDS lcov-geninfo-init lcov-geninfo + ) + endif () +endfunction (lcov_capture) + + + + +# Add a new global target to generate the lcov html report for the whole project +# instead of calling <TARGET>-genhtml for each target (to create an own report +# for each target). Instead of the lcov target it does not require geninfo for +# all targets, so you have to call <TARGET>-geninfo to generate the info files +# the targets you'd like to have in your report or lcov-geninfo for generating +# info files for all targets before calling lcov-genhtml. +file(MAKE_DIRECTORY ${LCOV_HTML_PATH}/selected_targets) +if (NOT TARGET lcov-genhtml) + add_custom_target(lcov-genhtml + COMMAND ${GENHTML_BIN} + --quiet + --output-directory ${LCOV_HTML_PATH}/selected_targets + --title \"${CMAKE_PROJECT_NAME} - targets `find + ${LCOV_DATA_PATH_CAPTURE} -name \"*.info\" ! -name + \"all_targets.info\" -exec basename {} .info \\\;`\" + --prefix ${PROJECT_SOURCE_DIR} + --sort + ${GENHTML_CPPFILT_FLAG} + `find ${LCOV_DATA_PATH_CAPTURE} -name \"*.info\" ! -name + \"all_targets.info\"` + ) +endif (NOT TARGET lcov-genhtml) |