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# - CodeCoverage
# Generate code coverage reports with LCOV and GCovr.
#
# Configuration:
# COVERAGE_SOURCE_DIR - Source root directory (default ${CMAKE_SOURCE_DIR}).
# COVERAGE_BINARY_DIR - Directory where the coverage reports (and intermediate files)
# are generated to.
# COVERAGE_EXCLUDES - List of exclude patterns (for example '*/tests/*').
#
# The following targets will be generated:
# coverage - Builds an html report. Requires LCOV.
# coverage_xml - Builds an xml report (in Cobertura format for Jenkins).
# Requires Gcovr.
#
# Inspired by https://github.com/bilke/cmake-modules/blob/master/CodeCoverage.cmake
# Compiler and linker setup
set(CMAKE_C_FLAGS_COVERAGE "-g -O0 --coverage" CACHE STRING
"Flags used by the C compiler during coverage builds." FORCE)
set(CMAKE_CXX_FLAGS_COVERAGE "-g -O0 --coverage" CACHE STRING
"Flags used by the C++ compiler during coverage builds." FORCE)
set(CMAKE_EXE_LINKER_FLAGS_COVERAGE "--coverage" CACHE STRING
"Flags used for linking binaries during coverage builds." FORCE)
set(CMAKE_SHARED_LINKER_FLAGS_COVERAGE "--coverage" CACHE STRING
"Flags used by the shared libraries linker during coverage builds." FORCE)
mark_as_advanced(
CMAKE_C_FLAGS_COVERAGE CMAKE_CXX_FLAGS_COVERAGE CMAKE_EXE_LINKER_FLAGS_COVERAGE
CMAKE_SHARED_LINKER_FLAGS_COVERAGE CMAKE_STATIC_LINKER_FLAGS_COVERAGE
)
find_program(LCOV_EXECUTABLE lcov)
find_program(GENINFO_EXECUTABLE geninfo)
find_program(GENHTML_EXECUTABLE genhtml)
find_program(GCOVR_EXECUTABLE gcovr)
mark_as_advanced(LCOV_EXECUTABLE GENINFO_EXECUTABLE GENHTML_EXECUTABLE GCOVR_EXECUTABLE)
# Default options
if(NOT COVERAGE_SOURCE_DIR)
set(COVERAGE_SOURCE_DIR ${CMAKE_SOURCE_DIR})
endif()
if(NOT COVERAGE_BINARY_DIR)
set(COVERAGE_BINARY_DIR ${CMAKE_BINARY_DIR}/coverage)
endif()
if(NOT COVERAGE_EXCLUDES)
set(COVERAGE_EXCLUDES)
endif()
# Allow variables in COVERAGE_DEPENDS that are not evaluated before this file is included.
string(CONFIGURE "${COVERAGE_DEPENDS}" COVERAGE_DEPENDS)
# Add coverage target that generates an HTML report using LCOV
if(LCOV_EXECUTABLE AND GENINFO_EXECUTABLE AND GENHTML_EXECUTABLE)
file(MAKE_DIRECTORY ${COVERAGE_BINARY_DIR})
add_custom_target(coverage
COMMAND ${CMAKE_COMMAND} -E make_directory ${COVERAGE_BINARY_DIR}
COMMAND ${LCOV_EXECUTABLE} -z -q -d ${CMAKE_BINARY_DIR}
COMMAND ${LCOV_EXECUTABLE} -c -q -i -d ${CMAKE_BINARY_DIR} -b ${COVERAGE_SOURCE_DIR}
-o ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage_base.info
COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target test || true
COMMAND ${LCOV_EXECUTABLE} -c -q -d ${CMAKE_BINARY_DIR} -b ${COVERAGE_SOURCE_DIR}
-o ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage_test.info
COMMAND ${LCOV_EXECUTABLE} -a ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage_base.info
-a ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage_test.info
-o ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage.info -q
COMMAND ${LCOV_EXECUTABLE} -q -r ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage.info
/usr/include/* ${CMAKE_BINARY_DIR}/* ${COVERAGE_EXCLUDES}
-o ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage.info
COMMAND ${GENHTML_EXECUTABLE} ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage.info
-o ${COVERAGE_BINARY_DIR}/html -s --legend --highlight --demangle-cpp
COMMAND ${CMAKE_COMMAND} -E echo "Coverage report: file://${COVERAGE_BINARY_DIR}/html/index.html"
WORKING_DIRECTORY ${COVERAGE_BINARY_DIR}
VERBATIM
DEPENDS ${COVERAGE_DEPENDS}
COMMENT "Generate code coverage html report"
)
else()
message(WARNING "Target coverage not available (lcov, geninfo and genhtml needed).")
endif()
# Add coverage target that generates an XML report using Gcovr
if(GCOVR_EXECUTABLE)
file(MAKE_DIRECTORY ${COVERAGE_BINARY_DIR})
string(REGEX REPLACE "([^;]+)" "--exclude=\"\\1\"" _gcovr_excludes "${COVERAGE_EXCLUDES}")
string(REPLACE "*" ".*" _gcovr_excludes "${_gcovr_excludes}")
add_custom_target(coverage_xml
COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target test || true
COMMAND ${GCOVR_EXECUTABLE} -x -r ${COVERAGE_SOURCE_DIR} -o ${COVERAGE_BINARY_DIR}/coverage.xml
--object-directory ${CMAKE_BINARY_DIR} ${_gcovr_excludes} ${CMAKE_BINARY_DIR}
COMMAND ${CMAKE_COMMAND} -E echo "Coverage report: file://${COVERAGE_BINARY_DIR}/coverage.xml"
WORKING_DIRECTORY ${COVERAGE_BINARY_DIR}
DEPENDS ${COVERAGE_DEPENDS}
COMMENT "Generate code coverage xml report"
)
unset(_gcovr_excludes)
else()
message(WARNING "Target coverage_xml not available (gcovr needed).")
endif()
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