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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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Documentation/AdvancedBuildInstructions.md
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@ -43,6 +43,7 @@ directory to `Build/i686` and then running `ninja <target>`:
There are some optional features that can be enabled during compilation that are intended to help with specific types of development work or introduce experimental features. Currently, the following build options are available:
- `ENABLE_ADDRESS_SANITIZER` and `ENABLE_KERNEL_ADDRESS_SANITIZER`: builds in runtime checks for memory corruption bugs (like buffer overflows and memory leaks) in Lagom test cases and the kernel, respectively.
- `ENABLE_KERNEL_COVERAGE_COLLECTION`: enables the KCOV API and kernel coverage collection instrumentation. Only useful for coverage guided kernel fuzzing.
- `ENABLE_USERSPACE_COVERAGE_COLLECTION`: enables coverage collection instrumentation for userspace. Currently only works with a Clang build.
- `ENABLE_MEMORY_SANITIZER`: enables runtime checks for uninitialized memory accesses in Lagom test cases.
- `ENABLE_UNDEFINED_SANITIZER`: builds in runtime checks for [undefined behavior](https://en.wikipedia.org/wiki/Undefined_behavior) (like null pointer dereferences and signed integer overflows) in Lagom test cases.
- `ENABLE_COMPILER_EXPLORER_BUILD`: Skip building non-library entities in Lagom (this only applies to Lagom).