Remove most Objective-C dbg and opt compiler flags

Currently, Bazel sticks some extra compiler flags in when you compile
Objective-C in dbg or opt mode. These flags should really be set in a
CROSSTOOL rather than in the Bazel core, so remove them.

RELNOTES:
Bazel uses fewer compiler flags by default when building Objective-C. In
particular, Bazel no longer sets `-O0`, `-DDEBUG=1`,
`-fstack-protector`, `-fstack-protector-all`, or `-g` in dbg mode, and
Bazel no longer sets `-Os`, `-DNDEBUG=1`, `-Wno-unused-variable`,
`-Winit-self`, or `-Wno-extra` in opt mode. If you want to apply these
flags to your project, you can reenable them in your CROSSTOOL.
PiperOrigin-RevId: 305065752
3 files changed
tree: 0fd34631a70a5eddd17eef54ee3e7cf6e2393bf3
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODEOWNERS
  15. combine_distfiles.py
  16. combine_distfiles_to_tar.sh
  17. compile.sh
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. distdir.bzl
  21. ISSUE_TEMPLATE.md
  22. LICENSE
  23. README.md
  24. WORKSPACE
README.md

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