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#.rst:
# CTestCoverageCollectGCOV
# ------------------------
#
# This module provides the function ``ctest_coverage_collect_gcov``.
# The function will run gcov on the .gcda files in a binary tree and then
# package all of the .gcov files into a tar file with a data.json that
# contains the source and build directories for CDash to use in parsing
# the coverage data. In addtion the Labels.json files for targets that
# have coverage information are also put in the tar file for CDash to
# asign the correct labels. This file can be sent to a CDash server for
# display with the
# :command:`ctest_submit(CDASH_UPLOAD)` command.
#
# .. command:: cdash_coverage_collect_gcov
#
# ::
#
# ctest_coverage_collect_gcov(TARBALL <tarfile>
# [SOURCE <source_dir>][BUILD <build_dir>]
# [GCOV_COMMAND <gcov_command>]
# [GCOV_OPTIONS <options>...]
# )
#
# Run gcov and package a tar file for CDash. The options are:
#
# ``TARBALL <tarfile>``
# Specify the location of the ``.tar`` file to be created for later
# upload to CDash. Relative paths will be interpreted with respect
# to the top-level build directory.
#
# ``SOURCE <source_dir>``
# Specify the top-level source directory for the build.
# Default is the value of :variable:`CTEST_SOURCE_DIRECTORY`.
#
# ``BUILD <build_dir>``
# Specify the top-level build directory for the build.
# Default is the value of :variable:`CTEST_BINARY_DIRECTORY`.
#
# ``GCOV_COMMAND <gcov_command>``
# Specify the full path to the ``gcov`` command on the machine.
# Default is the value of :variable:`CTEST_COVERAGE_COMMAND`.
#
# ``GCOV_OPTIONS <options>...``
# Specify options to be passed to gcov. The ``gcov`` command
# is run as ``gcov <options>... -o <gcov-dir> <file>.gcda``.
# If not specified, the default option is just ``-b``.
#=============================================================================
# Copyright 2014-2015 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
include(CMakeParseArguments)
function(ctest_coverage_collect_gcov)
set(options "")
set(oneValueArgs TARBALL SOURCE BUILD GCOV_COMMAND)
set(multiValueArgs GCOV_OPTIONS)
cmake_parse_arguments(GCOV "${options}" "${oneValueArgs}"
"${multiValueArgs}" "" ${ARGN} )
if(NOT DEFINED GCOV_TARBALL)
message(FATAL_ERROR
"TARBALL must be specified. for ctest_coverage_collect_gcov")
endif()
if(NOT DEFINED GCOV_SOURCE)
set(source_dir "${CTEST_SOURCE_DIRECTORY}")
else()
set(source_dir "${GCOV_SOURCE}")
endif()
if(NOT DEFINED GCOV_BUILD)
set(binary_dir "${CTEST_BINARY_DIRECTORY}")
else()
set(binary_dir "${GCOV_BUILD}")
endif()
if(NOT DEFINED GCOV_GCOV_COMMAND)
set(gcov_command "${CTEST_COVERAGE_COMMAND}")
else()
set(gcov_command "${GCOV_GCOV_COMMAND}")
endif()
# run gcov on each gcda file in the binary tree
set(gcda_files)
set(label_files)
# look for gcda files in the target directories
# could do a glob from the top of the binary tree but
# this will be faster and only look where the files will be
file(STRINGS "${binary_dir}/CMakeFiles/TargetDirectories.txt" target_dirs
ENCODING UTF-8)
foreach(target_dir ${target_dirs})
file(GLOB_RECURSE gfiles RELATIVE ${binary_dir} "${target_dir}/*.gcda")
list(LENGTH gfiles len)
# if we have gcda files then also grab the labels file for that target
if(${len} GREATER 0)
file(GLOB_RECURSE lfiles RELATIVE ${binary_dir}
"${target_dir}/Labels.json")
list(APPEND gcda_files ${gfiles})
list(APPEND label_files ${lfiles})
endif()
endforeach()
# return early if no coverage files were found
list(LENGTH gcda_files len)
if(len EQUAL 0)
message("ctest_coverage_collect_gcov: No .gcda files found, "
"ignoring coverage request.")
return()
endif()
# setup the dir for the coverage files
set(coverage_dir "${binary_dir}/Testing/CoverageInfo")
file(MAKE_DIRECTORY "${coverage_dir}")
# call gcov on each .gcda file
foreach (gcda_file ${gcda_files})
# get the directory of the gcda file
get_filename_component(gcda_file ${binary_dir}/${gcda_file} ABSOLUTE)
get_filename_component(gcov_dir ${gcda_file} DIRECTORY)
# run gcov, this will produce the .gcov file in the current
# working directory
if(NOT DEFINED GCOV_GCOV_OPTIONS)
set(GCOV_GCOV_OPTIONS -b)
endif()
execute_process(COMMAND
${gcov_command} ${GCOV_GCOV_OPTIONS} -o ${gcov_dir} ${gcda_file}
OUTPUT_VARIABLE out
RESULT_VARIABLE res
WORKING_DIRECTORY ${coverage_dir})
endforeach()
if(NOT "${res}" EQUAL 0)
message(STATUS "Error running gcov: ${res} ${out}")
endif()
# create json file with project information
file(WRITE ${coverage_dir}/data.json
"{
\"Source\": \"${source_dir}\",
\"Binary\": \"${binary_dir}\"
}")
# collect the gcov files
set(gcov_files)
file(GLOB_RECURSE gcov_files RELATIVE ${binary_dir} "${coverage_dir}/*.gcov")
# tar up the coverage info with the same date so that the md5
# sum will be the same for the tar file independent of file time
# stamps
string(REPLACE ";" "\n" gcov_files "${gcov_files}")
string(REPLACE ";" "\n" label_files "${label_files}")
file(WRITE "${coverage_dir}/coverage_file_list.txt"
"${gcov_files}
${coverage_dir}/data.json
${label_files}
")
execute_process(COMMAND
${CMAKE_COMMAND} -E tar cvfj ${GCOV_TARBALL}
"--mtime=1970-01-01 0:0:0 UTC"
--files-from=${coverage_dir}/coverage_file_list.txt
WORKING_DIRECTORY ${binary_dir})
endfunction()
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