0.13 api question

[thomasaarholt]

With 0.12.x we were passing extra flags to rustc:
maturin develop --rustc-extra-args="-C codegen-units=16 -C lto=thin -C target-cpu=native" --release.

I'm a bit confused on how to use the -C options in 0.13, now that --rustc-extra-args is deprecated:

❯ maturin develop -C codegen-units=16 -C lto=thin -C target-cpu=native --release
error: Found argument '-C' which wasn't expected, or isn't valid in this context

        If you tried to supply `-C` as a value rather than a flag, use `-- -C`

❯ maturin develop -- -C codegen-units=16 -C lto=thin -C target-cpu=native --release
error: Found argument '-C' which wasn't expected, or isn't valid in this context

        If you tried to supply `-C` as a value rather than a flag, use `-- -C`

[messense]

Can you try maturin develop --release -- -C codegen-units=16 -C lto=thin -C target-cpu=native? Because --release isn't a rustc argument.

$ maturin --version
maturin 0.13.0
$ maturin develop --release -- -C codegen-units=16 -C target-cpu=native
🔗 Found pyo3 bindings with abi3 support for Python ≥ 3.7
🐍 Not using a specific python interpreter
📡 Using build options bindings from pyproject.toml
Ignoring attrs: markers 'extra == "test"' don't match your environment
Ignoring boltons: markers 'sys_platform == "win32" and extra == "test"' don't match your environment
WARNING: You are using pip version 21.2.3; however, version 22.1.2 is available.
You should consider upgrading via the '/Users/messense/.pyenv/versions/3.10.0/envs/test-py310/bin/python -m pip install --upgrade pip' command.
   Compiling target-lexicon v0.12.3
   Compiling python3-dll-a v0.2.3
   Compiling proc-macro2 v1.0.39
   Compiling once_cell v1.11.0
   Compiling libc v0.2.126
   Compiling unicode-ident v1.0.0
   Compiling syn v1.0.95
   Compiling autocfg v1.1.0
   Compiling parking_lot_core v0.9.3
   Compiling scopeguard v1.1.0
   Compiling smallvec v1.8.0
   Compiling cfg-if v1.0.0
   Compiling unindent v0.1.9
   Compiling indoc v1.0.6
   Compiling lock_api v0.4.7
   Compiling quote v1.0.18
   Compiling pyo3-build-config v0.16.5
   Compiling parking_lot v0.12.0
   Compiling pyo3-macros-backend v0.16.5
   Compiling pyo3-ffi v0.16.5
   Compiling pyo3 v0.16.5
   Compiling pyo3-macros v0.16.5
   Compiling pyo3-pure v2.1.2 (/Users/messense/Projects/maturin/test-crates/pyo3-pure)
    Finished release [optimized] target(s) in 7.56s
📖 Found type stub file at pyo3_pure.pyi
📦 Built wheel for abi3 Python ≥ 3.7 to /var/folders/0r/4fqyt_zs2tj4zvglsb7f4zjw0000gn/T/.tmpNAMDIa/pyo3_pure-2.1.2-cp37-abi3-macosx_11_0_arm64.whl
🛠  Installed pyo3-pure-2.1.2

maturin develop --release -- -C codegen-units=16 -C target-cpu=native works for me on macOS, had to drop -C lto=thin because it conflicts with the default -C embed-bitcode=no on macOS.