Add support for custom cargo profiles

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Unreleased
 ### Added
 - Add support for `kebab-case` executable names. [#205](https://github.com/PyO3/setuptools-rust/pull/205)
+- Add support for custom cargo profiles. [#216](https://github.com/PyO3/setuptools-rust/pull/216)
 
 ## 1.1.2 (2021-12-05)
 ### Changed

examples/hello-world/Cargo.toml

@@ -6,3 +6,7 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+
+[profile.release-lto]
+inherits = "release"
+lto = true

examples/hello-world/setup.py

@@ -10,6 +10,7 @@
             {"hello-world": "hello_world.hello-world"},
             binding=Binding.Exec,
             script=True,
+            args=["--profile", "release-lto"],
         )
     ],
     # rust extensions are not zip safe, just like C-extensions.

setuptools_rust/build.py

@@ -1,5 +1,4 @@
 import glob
-import json
 import os
 import platform
 import shutil
@@ -15,15 +14,14 @@
     DistutilsPlatformError,
 )
 from distutils.sysconfig import get_config_var
-from subprocess import check_output
-from typing import Dict, List, NamedTuple, Optional, Union, cast
+from typing import Dict, List, NamedTuple, Optional, cast
 
 from setuptools.command.build_ext import build_ext as CommandBuildExt
 from setuptools.command.build_ext import get_abi3_suffix
 from typing_extensions import Literal
 
 from .command import RustCommand
-from .extension import Binding, RustExtension, Strip
+from .extension import RustExtension, Strip
 from .utils import (
     PyLimitedApi,
     binding_features,
@@ -223,7 +221,18 @@ def build_extension(
         # Find the shared library that cargo hopefully produced and copy
         # it into the build directory as if it were produced by build_ext.
 
-        artifacts_dir = os.path.join(target_dir, "debug" if debug else "release")
+        profile = ext.get_cargo_profile()
+        if profile:
+            # https://doc.rust-lang.org/cargo/reference/profiles.html
+            if profile in {"dev", "test"}:
+                profile_dir = "debug"
+            elif profile == "bench":
+                profile_dir = "release"
+            else:
+                profile_dir = profile
+        else:
+            profile_dir = "debug" if debug else "release"
+        artifacts_dir = os.path.join(target_dir, profile_dir)
         dylib_paths = []
 
         if ext._uses_exec_binding():
@@ -464,7 +473,9 @@ def _cargo_args(
             args.extend(["--target", target_triple])
 
         if release:
-            args.append("--release")
+            profile = ext.get_cargo_profile()
+            if not profile:
+                args.append("--release")
 
         if quiet:
             args.append("-q")

setuptools_rust/extension.py

@@ -170,6 +170,26 @@ def get_rust_version(self) -> Optional[SimpleSpec]:  # type: ignore[no-any-unimp
                 "Can not parse rust compiler version: %s", self.rust_version
             )
 
+    def get_cargo_profile(self) -> Optional[str]:
+        args = self.args or []
+        try:
+            index = args.index("--profile")
+            return args[index + 1]
+        except ValueError:
+            pass
+        except IndexError:
+            raise DistutilsSetupError("Can not parse cargo profile from %s", args)
+
+        # Handle `--profile=<profile>`
+        profile_args = [p for p in args if p.startswith("--profile=")]
+        if profile_args:
+            profile = profile_args[0].split("=", 1)[1]
+            if not profile:
+                raise DistutilsSetupError("Can not parse cargo profile from %s", args)
+            return profile
+        else:
+            return None
+
     def entry_points(self) -> List[str]:
         entry_points = []
         if self.script and self.binding == Binding.Exec:

setuptools_rust/utils.py

@@ -1,7 +1,7 @@
 import os
 import subprocess
 from distutils.errors import DistutilsPlatformError
-from typing import List, Optional, Set, Tuple, Union
+from typing import List, Optional, Set, Tuple
 
 from semantic_version import Version
 from typing_extensions import Literal