1find_program(CODE_COVERAGE_LCOV lcov)
2if (NOT CODE_COVERAGE_LCOV)
3  message(FATAL_ERROR "Cannot find lcov...")
4endif()
5
6find_program(CODE_COVERAGE_LLVM_COV llvm-cov)
7if (NOT CODE_COVERAGE_LLVM_COV)
8  message(FATAL_ERROR "Cannot find llvm-cov...")
9endif()
10
11find_program(CODE_COVERAGE_GENHTML genhtml)
12if (NOT CODE_COVERAGE_GENHTML)
13  message(FATAL_ERROR "Cannot find genhtml...")
14endif()
15
16set(CMAKE_CXX_FLAGS_COVERAGE "-g -O0 --coverage")
17
18function(setup_lcov_test_target_coverage target_name output_dir capture_dirs source_dirs)
19  if (NOT DEFINED LIBCXX_BINARY_DIR)
20    message(FATAL_ERROR "Variable must be set")
21  endif()
22
23  set(GCOV_TOOL "${LIBCXX_BINARY_DIR}/llvm-cov-wrapper")
24  file(GENERATE OUTPUT ${GCOV_TOOL}
25    CONTENT "#!/usr/bin/env bash\n${CODE_COVERAGE_LLVM_COV} gcov \"$@\"\n")
26
27  file(MAKE_DIRECTORY ${output_dir})
28
29  set(CAPTURE_DIRS "")
30  foreach(cdir ${capture_dirs})
31    list(APPEND CAPTURE_DIRS "-d;${cdir}")
32  endforeach()
33
34  set(EXTRACT_DIRS "")
35  foreach(sdir ${source_dirs})
36    list(APPEND EXTRACT_DIRS "'${sdir}/*'")
37  endforeach()
38
39  message(STATUS "Capture Directories: ${CAPTURE_DIRS}")
40  message(STATUS "Extract Directories: ${EXTRACT_DIRS}")
41
42  add_custom_target(generate-lib${target_name}-coverage
43        COMMAND chmod +x ${GCOV_TOOL}
44        COMMAND ${CODE_COVERAGE_LCOV} --gcov-tool ${GCOV_TOOL} --capture ${CAPTURE_DIRS} -o test_coverage.info
45        COMMAND ${CODE_COVERAGE_LCOV} --gcov-tool ${GCOV_TOOL} --extract test_coverage.info ${EXTRACT_DIRS} -o test_coverage.info
46        COMMAND ${CODE_COVERAGE_GENHTML} --demangle-cpp test_coverage.info -o test_coverage
47        COMMAND ${CMAKE_COMMAND} -E remove test_coverage.info
48        WORKING_DIRECTORY ${output_dir}
49        COMMENT "Generating coverage results")
50endfunction()
51