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import os
import sys
import shutil
import textwrap
import platform
from pathlib import Path
from subprocess import run
from setuptools import setup, Extension, Command
from setuptools.command import build_ext as _build_ext
curdir = Path(__file__).resolve().parent
ecodes_c_path = curdir / "src/evdev/ecodes.c"
def create_ecodes(headers=None, reproducible=False):
if not headers:
include_paths = set()
cpath = os.environ.get("CPATH", "").strip()
c_inc_path = os.environ.get("C_INCLUDE_PATH", "").strip()
if cpath:
include_paths.update(cpath.split(":"))
if c_inc_path:
include_paths.update(c_inc_path.split(":"))
include_paths.add("/usr/include")
if platform.system().lower() == "freebsd":
files = ["dev/evdev/input.h", "dev/evdev/input-event-codes.h", "dev/evdev/uinput.h"]
else:
files = ["linux/input.h", "linux/input-event-codes.h", "linux/uinput.h"]
headers = [os.path.join(path, file) for path in include_paths for file in files]
headers = [header for header in headers if os.path.isfile(header)]
if not headers:
msg = """\
The 'linux/input.h' and 'linux/input-event-codes.h' include files
are missing. You will have to install the kernel header files in
order to continue:
dnf install kernel-headers-$(uname -r)
apt-get install linux-headers-$(uname -r)
emerge sys-kernel/linux-headers
pacman -S kernel-headers
In case they are installed in a non-standard location, you may use
the '--evdev-headers' option to specify one or more colon-separated
paths. For example:
python setup.py \\
build \\
build_ecodes --evdev-headers path/input.h:path/input-event-codes.h \\
build_ext --include-dirs path/ \\
install
If you want to avoid building this package from source, then please consider
installing the `evdev-binary` package instead. Keep in mind that it may not be
fully compatible with, or support all the features of your current kernel.
"""
sys.stderr.write(textwrap.dedent(msg))
sys.exit(1)
print("writing %s (using %s)" % (ecodes_c_path, " ".join(headers)))
with ecodes_c_path.open("w") as fh:
cmd = [sys.executable, "src/evdev/genecodes_c.py"]
if reproducible:
cmd.append("--reproducible")
cmd.extend(["--ecodes", *headers])
run(cmd, check=True, stdout=fh)
class build_ecodes(Command):
description = "generate ecodes.c"
user_options = [
("evdev-headers=", None, "colon-separated paths to input subsystem headers"),
("reproducible", None, "hide host details (host/paths) to create a reproducible output"),
]
def initialize_options(self):
self.evdev_headers = None
self.reproducible = False
def finalize_options(self):
if self.evdev_headers:
self.evdev_headers = self.evdev_headers.split(":")
if self.reproducible is None:
self.reproducible = False
def run(self):
create_ecodes(self.evdev_headers, reproducible=self.reproducible)
class build_ext(_build_ext.build_ext):
def has_ecodes(self):
if ecodes_c_path.exists():
print("ecodes.c already exists ... skipping build_ecodes")
return False
return True
def generate_ecodes_py(self):
ecodes_py = Path(self.build_lib) / "evdev/ecodes.py"
print(f"writing {ecodes_py}")
with ecodes_py.open("w") as fh:
cmd = [sys.executable, "-B", "src/evdev/genecodes_py.py"]
res = run(cmd, env={"PYTHONPATH": self.build_lib}, stdout=fh)
if res.returncode != 0:
print(f"failed to generate static {ecodes_py} - will use ecodes_runtime.py")
shutil.copy("src/evdev/ecodes_runtime.py", ecodes_py)
def run(self):
for cmd_name in self.get_sub_commands():
self.run_command(cmd_name)
_build_ext.build_ext.run(self)
self.generate_ecodes_py()
sub_commands = [("build_ecodes", has_ecodes)] + _build_ext.build_ext.sub_commands
cflags = ["-std=c99", "-Wno-error=declaration-after-statement"]
setup(
ext_modules=[
Extension("evdev._input", sources=["src/evdev/input.c"], extra_compile_args=cflags),
Extension("evdev._uinput", sources=["src/evdev/uinput.c"], extra_compile_args=cflags),
Extension("evdev._ecodes", sources=["src/evdev/ecodes.c"], extra_compile_args=cflags),
],
cmdclass={
"build_ext": build_ext,
"build_ecodes": build_ecodes,
},
)
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