Start writing the python build script

pyproject.toml

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+[tool.pylsp.plugins.pycodestyle]
+enabled = true
+ignore = ["E501", "W291"]  # ignore line length & trailing whitespace
+

x.py

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+#!/usr/bin/env python
+
+import sys
+import subprocess
+import threading
+import os
+
+__FILENAME = ""
+
+MAX_JOBS = 4
+
+CWD = os.curdir
+
+BUILD_D = f"{CWD}/build"
+
+
+def shift(arr):
+    if not arr:
+        return None  # or raise IndexError if you prefer
+    return arr.pop(0)
+
+
+def run(*cmds, parallel=False, tag=None, interactive=False):
+    threads = []
+
+    def run_single(cmd, tag):
+        print(f"CMD: {cmd}")
+        with subprocess.Popen(
+            cmd, shell=True,
+            stdout=None if interactive else subprocess.PIPE,
+            stderr=None if interactive else subprocess.STDOUT,
+            text=None if interactive else True,
+            bufsize=1
+        ) as proc:
+            if not interactive:
+                for line in proc.stdout:
+                    line = line.rstrip("\n")
+                    if tag:
+                        print(f"stdout ({tag}): {line}", flush=True)
+                    else:
+                        print(f"stdout: {line}", flush=True)
+            proc.wait()
+            if proc.returncode != 0:
+                raise subprocess.CalledProcessError(proc.returncode, cmd)
+
+    for i, command in enumerate(cmds):
+        current_tag = f"{tag}-{i}" if tag else None
+        if parallel:
+            t = threading.Thread(
+                target=run_single, args=(command, current_tag))
+            t.start()
+            threads.append(t)
+        else:
+            run_single(command, current_tag)
+
+    for t in threads:
+        t.join()
+
+
+def cmd_configure(args):
+
+    def cmd_help():
+        print(f"Usage: {__FILENAME} configure [component]")
+        print("Components:")
+        print("    kernel  - The linux kernel")
+        print("    busybox - Busybox")
+
+    # $(MAKE) -C $(MAKEFILE_DIR)/kernel O=$(KERNEL_BUILD_DIR) KCONFIG_CONFIG="$(MAKEFILE_DIR)/.kernel-config" menuconfig
+    subc = shift(args)
+    if not subc:
+        cmd_help()
+        exit(1)
+    elif subc == "kernel":
+        run(f"make -C {CWD}/linux/kernel O={BUILD_D}/linux/kernel KCONFIG_CONFIG='{
+            CWD}/linux/.kernel-config' menuconfig", interactive=True)
+    elif subc == "busybox":
+        run(f"make -C {CWD}/linux/busybox O={BUILD_D}/linux/busybox KCONFIG_CONFIG='{
+            CWD}/linux/.busybox-config' menuconfig", interactive=True)
+    else:
+        print(f"ERROR: Unknown component {subc}")
+        cmd_help()
+        exit(1)
+
+
+AVAILABLE_SUBCOMMANDS = {
+    "help": help,
+    "configure": cmd_configure,
+}
+
+
+def help():
+    print(f"Usage: {__FILENAME} [subcommand]")
+    print("Subcommands:")
+    print("    help      - Show this help")
+    print("    configure - Configure components")
+
+
+if __name__ == "__main__":
+    args = sys.argv
+    __FILENAME = shift(args)
+
+    cmd = shift(args)
+
+    if not cmd:
+        help()
+        exit(1)
+
+    cmd_v = AVAILABLE_SUBCOMMANDS[cmd]
+    if not cmd_v:
+        print(f"ERROR: Unknown subcommand '{cmd}'")
+        help()
+        exit(1)
+
+    (cmd_v)(args)
+
+    exit(0)