LineageOS/android_external_libcxx
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Change test coverage generation to use llvm-cov instead of gcov.

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Clang doesn't produce gcov compatible coverage files. This
causes lcov to break because it uses gcov by default. This
patch switches lcov to use llvm-cov as the gcov-tool.

Unfortunatly llvm-cov doesn't provide a gcov like interface by
default so it won't work with lcov. However `llvm-cov gcov` does.
For this reason we generate 'llvm-cov-wrapper' script that always
passes the gcov flag.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@297553 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2017-03-11 03:24:18 +00:00
parent 76880f55bf
commit c51e0d21a1
4 changed files with 65 additions and 8 deletions
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18
cmake/Modules/CodeCoverage.cmake
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@@ -3,6 +3,11 @@ if (NOT CODE_COVERAGE_LCOV)
message(FATAL_ERROR "Cannot find lcov...")
endif()
find_program(CODE_COVERAGE_LLVM_COV llvm-cov)
if (NOT CODE_COVERAGE_LLVM_COV)
message(FATAL_ERROR "Cannot find llvm-cov...")
endif()
find_program(CODE_COVERAGE_GENHTML genhtml)
if (NOT CODE_COVERAGE_GENHTML)
message(FATAL_ERROR "Cannot find genhtml...")
@@ -11,6 +16,14 @@ endif()
set(CMAKE_CXX_FLAGS_COVERAGE "-g -O0 --coverage")
function(setup_lcov_test_target_coverage target_name output_dir capture_dirs source_dirs)
if (NOT DEFINED LIBCXX_BINARY_DIR)
message(FATAL_ERROR "Variable must be set")
endif()
set(GCOV_TOOL "${LIBCXX_BINARY_DIR}/llvm-cov-wrapper")
file(GENERATE OUTPUT ${GCOV_TOOL}
CONTENT "#!/usr/bin/env bash\n${CODE_COVERAGE_LLVM_COV} gcov \"$@\"\n")
file(MAKE_DIRECTORY ${output_dir})
set(CAPTURE_DIRS "")
@@ -27,8 +40,9 @@ function(setup_lcov_test_target_coverage target_name output_dir capture_dirs sou
message(STATUS "Extract Directories: ${EXTRACT_DIRS}")
add_custom_target(generate-lib${target_name}-coverage
COMMAND ${CODE_COVERAGE_LCOV} --capture ${CAPTURE_DIRS} -o test_coverage.info
COMMAND ${CODE_COVERAGE_LCOV} --extract test_coverage.info ${EXTRACT_DIRS} -o test_coverage.info
COMMAND chmod +x ${GCOV_TOOL}
COMMAND ${CODE_COVERAGE_LCOV} --gcov-tool ${GCOV_TOOL} --capture ${CAPTURE_DIRS} -o test_coverage.info
COMMAND ${CODE_COVERAGE_LCOV} --gcov-tool ${GCOV_TOOL} --extract test_coverage.info ${EXTRACT_DIRS} -o test_coverage.info
COMMAND ${CODE_COVERAGE_GENHTML} --demangle-cpp test_coverage.info -o test_coverage
COMMAND ${CMAKE_COMMAND} -E remove test_coverage.info
WORKING_DIRECTORY ${output_dir}