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Generate coverage on Mac
call WebKitTools/Script/generate-coverage-data
or by hand
# delete
find . -name '*.gcda' -delete
# build, -framework CoreFoundation might suffice as well
WebKitTools/Scripts/build-webkit GCC_GENERATE_TEST_COVERAGE_FILES=YES GCC_INSTRUMENT_PROGRAM_FLOW_ARCS=YES EXTRA_LINK=" -ftest-coverage -fprofile-arcs" OTHER_CFLAGS=" -MD " OTHER_LDFLAGS=" -ftest-coverage -fprofile-arcs -framework AppKit"
WebKitTools/Scripts/run-webkit-tests
WebKitTools/Scripts/run-javascriptcore-tests GCC_GENERATE_TEST_COVERAGE_FILES=YES GCC_INSTRUMENT_PROGRAM_FLOW_ARCS=YES EXTRA_LINK=" -ftest-coverage -fprofile-arcs" OTHER_CFLAGS=" -MD " OTHER_LDFLAGS=" -ftest-coverage -fprofile-arcs -framework AppKit"
# Collect files
WebKitTools/CodeCoverage/run-generate-coverage-data <RUN_ID> ../coverage-results/
# Generate graph
WebKitTools/CodeCoverage/regenerate-coverage-display ../coverage-results/ ../coverage-results/html
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