- Fix style errors.
- L4-bender does not yet support dynamic linking.
- Stack unwinding is not yet supported for x86_64-unknown-l4re-uclibc.
For now, just abort on panics.
- Use GNU-style linker options where possible. As suggested by review:
- Use standard GNU-style ld syntax for relro flags.
- Use standard GNU-style optimization flags and logic.
- Use standard GNU-style ld syntax for --subsystem.
- Don't read environment variables in L4Bender linker. Thanks to
CARGO_ENCODED_RUSTFLAGS introduced in #9601, l4-bender's arguments can
now be passed from the L4Re build system without resorting to custom
parsing of environment variables.
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