Add libusb package (#56)

libusb/build.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+set -e
+
+DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
+cd "$DIR"
+
+VERSION="1.0.29"
+ARCHIVE="libusb-${VERSION}.tar.bz2"
+URL="https://github.com/libusb/libusb/releases/download/v${VERSION}/${ARCHIVE}"
+INSTALL_DIR="$DIR/libusb/install"
+SRC_DIR="$DIR/libusb-src"
+VERSION_FILE="$SRC_DIR/.version"
+
+NJOBS="$(nproc 2>/dev/null || sysctl -n hw.ncpu 2>/dev/null || echo 2)"
+export CC="ccache ${CC:-cc}"
+
+if [ ! -f "$VERSION_FILE" ] || [ "$(cat "$VERSION_FILE")" != "$VERSION" ]; then
+  rm -rf "$SRC_DIR"
+  mkdir -p "$SRC_DIR"
+  curl -fSL "$URL" | tar xj --strip-components=1 -C "$SRC_DIR"
+  echo "$VERSION" > "$VERSION_FILE"
+fi
+
+PREFIX="$DIR/build/prefix"
+rm -rf "$DIR/build"
+mkdir -p "$DIR/build"
+
+CONFIGURE_ARGS=(
+  --prefix="$PREFIX"
+  --disable-shared
+  --enable-static
+)
+
+if [ "$(uname)" = "Linux" ]; then
+  CONFIGURE_ARGS+=(--disable-udev)
+fi
+
+cd "$SRC_DIR"
+CFLAGS="-O2 -fPIC" ./configure "${CONFIGURE_ARGS[@]}"
+make -j"$NJOBS"
+make install
+cd "$DIR"
+
+rm -rf "$INSTALL_DIR"
+mkdir -p "$INSTALL_DIR/lib/pkgconfig" "$INSTALL_DIR/include/libusb-1.0"
+
+cp "$PREFIX/lib/libusb-1.0.a" "$INSTALL_DIR/lib/"
+cp "$PREFIX/lib/pkgconfig/libusb-1.0.pc" "$INSTALL_DIR/lib/pkgconfig/"
+cp "$PREFIX/include/libusb-1.0/libusb.h" "$INSTALL_DIR/include/libusb-1.0/"
+
+echo "Installed libusb to $INSTALL_DIR"
+du -sh "$INSTALL_DIR"

libusb/libusb/__init__.py

@@ -0,0 +1,12 @@
+import os
+
+DIR = os.path.join(os.path.dirname(__file__), "install")
+LIB_DIR = os.path.join(DIR, "lib")
+INCLUDE_DIR = os.path.join(DIR, "include")
+PKGCONFIG_DIR = os.path.join(LIB_DIR, "pkgconfig")
+
+
+def smoketest():
+  assert os.path.isfile(os.path.join(LIB_DIR, "libusb-1.0.a")), "libusb-1.0.a not found"
+  assert os.path.isfile(os.path.join(INCLUDE_DIR, "libusb-1.0", "libusb.h")), "libusb.h not found"
+  assert os.path.isfile(os.path.join(PKGCONFIG_DIR, "libusb-1.0.pc")), "libusb-1.0.pc not found"

libusb/pyproject.toml

@@ -0,0 +1,15 @@
+[build-system]
+requires = ["setuptools>=64", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "libusb"
+version = "1.0.29"
+description = "libusb USB device access library (static build)"
+requires-python = ">=3.8"
+
+[tool.setuptools.packages.find]
+include = ["libusb*"]
+
+[tool.setuptools.package-data]
+libusb = ["install/**/*"]

libusb/setup.py

@@ -0,0 +1,58 @@
+import os
+import platform
+import subprocess
+
+from setuptools.command.build_py import build_py
+
+try:
+  from wheel.bdist_wheel import bdist_wheel
+except ImportError:
+  bdist_wheel = None
+
+
+class BuildLibusb(build_py):
+  """Run build.sh to compile libusb before collecting package data."""
+
+  def run(self):
+    pkg_dir = os.path.dirname(os.path.abspath(__file__))
+    build_script = os.path.join(pkg_dir, "build.sh")
+    subprocess.check_call(["bash", build_script], cwd=pkg_dir)
+
+    super().run()
+
+
+cmdclass = {"build_py": BuildLibusb}
+
+if bdist_wheel is not None:
+
+  class PlatformWheel(bdist_wheel):
+    """Produce a platform-specific, Python-version-agnostic wheel."""
+
+    def finalize_options(self):
+      super().finalize_options()
+      self.root_is_pure = False
+
+    def get_tag(self):
+      system = platform.system()
+      machine = platform.machine()
+
+      if system == "Linux":
+        plat = f"linux_{machine}"
+      elif system == "Darwin":
+        plat = "macosx_11_0_arm64"
+      else:
+        plat = f"{system.lower()}_{machine}"
+
+      return "py3", "none", plat
+
+  cmdclass["bdist_wheel"] = PlatformWheel
+
+
+def setup():
+  from setuptools import setup as _setup
+
+  _setup(cmdclass=cmdclass)
+
+
+if __name__ == "__main__":
+  setup()