Merge pull request #38 from pganssle/rustc_flags

Add rustc_flags

Author: konstin

README.rst

@@ -90,6 +90,9 @@ You can define rust extension with `RustExtension` class:
 
    :param [str] features: a list of features to also build
 
+   :param [str] rustc_flags: A list of arguments to pass to `rustc`, e.g.
+                             `cargo rustc --features <features> <args> -- <rustc_flags>`
+
    :param str rust_version: sematic version of rust compiler version -- for example
                             *>1.14,<1.16*, default is None
 

setuptools_rust/build.py

@@ -135,6 +135,7 @@ def build_extension(self, ext):
                 args.append("-q")
 
             args.extend(["--", "--crate-type", "cdylib"])
+            args.extend(ext.rustc_flags or [])
 
             # OSX requires special linker argument
             if sys.platform == "darwin":

setuptools_rust/extension.py

@@ -55,6 +55,7 @@ def __init__(
         path,
         args=None,
         features=None,
+        rustc_flags=None,
         rust_version=None,
         quiet=False,
         debug=None,
@@ -73,6 +74,7 @@ def __init__(
         self.name = name
         self.target = target
         self.args = args
+        self.rustc_flags = rustc_flags
         self.binding = binding
         self.rust_version = rust_version
         self.quiet = quiet