GN standalone: extra_{target,host}_cflags + fstack-protector-strong

- Switch to -fstack-protector-strong. CrOS prefers that and there
  doesn't seem to be a good reason for not applying it globally to
  our standalone builds.
- Introduce a new set extra_{target,host}_{c,cxx,ld}flags. This is
  to allow the embedder overriding flags only for one toolchain.
  For context see https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2251681
- Allow the embedder to disable the stacktrace reporting on
  debug builds, as that require a further dependency on
  libbacktrace.

Bug: 147789115
Change-Id: I1c1f9c8853bac9e97702c060db51fefdb9ed963e
6 files changed
tree: 4931fa5cff2ee932b10ec3f148f973183d3d14e4
  1. bazel/
  2. build_overrides/
  3. buildtools/
  4. debian/
  5. docs/
  6. examples/
  7. gn/
  8. include/
  9. infra/
  10. protos/
  11. src/
  12. test/
  13. tools/
  14. ui/
  15. .clang-format
  16. .clang-tidy
  17. .gitignore
  18. .gn
  19. .style.yapf
  20. Android.bp
  21. Android.bp.extras
  22. BUILD
  23. BUILD.extras
  24. BUILD.gn
  25. CHANGELOG
  26. codereview.settings
  27. heapprofd.rc
  28. LICENSE
  29. METADATA
  30. MODULE_LICENSE_APACHE2
  31. OWNERS
  32. perfetto.rc
  33. PRESUBMIT.py
  34. README.chromium
  35. README.md
  36. TEST_MAPPING
  37. traced_perf.rc
  38. WORKSPACE
README.md

Perfetto - System profiling, app tracing and trace analysis

Perfetto is a production-grade open-source stack for performance instrumentation and trace analysis. It offers services and libraries and for recording system-level and app-level traces, native + java heap profiling, a library for analyzing traces using SQL and a web-based UI to visualize and explore multi-GB traces.

See https://perfetto.dev/docs or the /docs/ directory for documentation.