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Meta+Userland: Add ENABLE_USERSPACE_COVERAGE_COLLECTION CMake option

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This option sets -fprofile-instr-generate -fcoverage-mapping for Clang
builds only on almost all of Userland. Loader and LibTimeZone are
exempt. This can be used for generating code coverage reports, or even
PGO in the future.
This commit is contained in:
Andrew Kaster 2022-03-04 18:02:09 -07:00 • committed by Andreas Kling
parent a6b2c34746
commit 5120b39d0e
9 changed files with 39 additions and 2 deletions
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16
Userland/CMakeLists.txt
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@ -1,5 +1,21 @@
add_compile_options(-O2)
# Escape hatch target to prevent runtime startup libraries from having coverage enabled
# at awkward points in program initialization
add_library(NoCoverage INTERFACE)
if (ENABLE_USERSPACE_COVERAGE_COLLECTION)
if (CMAKE_CXX_COMPILER_ID MATCHES "Clang$")
add_compile_options(-fprofile-instr-generate -fcoverage-mapping)
add_link_options(-fprofile-instr-generate -fcoverage-mapping)
target_compile_options(NoCoverage INTERFACE -fno-profile-generate -fno-profile-instr-use -fno-profile-instr-generate -fno-coverage-mapping)
target_link_options(NoCoverage INTERFACE -fno-profile-generate -fno-profile-instr-use -fno-profile-instr-generate -fno-coverage-mapping)
else()
message(FATAL_ERROR "ENABLE_USERSPACE_COVERAGE_COLLECTION not supported yet for ${CMAKE_CXX_COMPILER_ID}")
endif()
endif()
add_subdirectory(Applications)
add_subdirectory(Demos)
add_subdirectory(DevTools)