Add setuptools.command.build (#3256)

1 files changed, 24 insertions, 0 deletions

diff --git a/setuptools/command/build.py b/setuptools/command/build.py
new file mode 100644
index 00000000..7ab60ce6
--- /dev/null
+++ b/setuptools/command/build.py
@@ -0,0 +1,24 @@
+from distutils.command.build import build as _build
+import warnings
+
+from setuptools import SetuptoolsDeprecationWarning
+
+
+_ORIGINAL_SUBCOMMANDS = {"build_py", "build_clib", "build_ext", "build_scripts"}
+
+
+class build(_build):
+    # copy to avoid sharing the object with parent class
+    sub_commands = _build.sub_commands[:]
+
+    def run(self):
+        subcommands = {cmd[0] for cmd in _build.sub_commands}
+        if subcommands - _ORIGINAL_SUBCOMMANDS:
+            msg = """
+            It seems that you are using `distutils.command.build.build` to add
+            new subcommands. Using `distutils` directly is considered deprecated,
+            please use `setuptools.command.build`.
+            """
+            warnings.warn(msg, SetuptoolsDeprecationWarning)
+            self.sub_commands = _build.sub_commands
+        super().run()