LLVMParty-llvm-nanobind/llvm-bin

#!/usr/bin/env -S uv run --script
"""
Usage:
    python llvm-bin.py <tool> [args...]

1. Read .llvm-prefix for the LLVM installation path
2. Ensure <llvm_prefix>/bin/<tool> exists and is executable
3. Forward command line arguments and stdout/stderr to the tool
"""

import os
import subprocess
import sys
from pathlib import Path

def get_llvm_prefix() -> Path:
    """Get the LLVM installation prefix from .llvm-prefix file."""
    prefix_file = Path(__file__).parent / ".llvm-prefix"
    if not prefix_file.exists():
        print("Error: .llvm-prefix file not found.", file=sys.stderr)
        sys.exit(1)

    with open(prefix_file, "r") as f:
        llvm_prefix = os.path.expanduser(f.read().strip())

    path = Path(llvm_prefix)
    if not path.exists():
        print(f"Error: LLVM prefix from .llvm-prefix does not exist: {path}", file=sys.stderr)
        sys.exit(1)

    return path

def main():
    if len(sys.argv) < 2:
        print("Usage: python llvm-bin.py <tool> [args...]", file=sys.stderr)
        sys.exit(1)

    tool = sys.argv[1]
    if sys.platform == "win32":
        tool += ".exe"
    args = sys.argv[2:]

    llvm_prefix = get_llvm_prefix()
    tool_path = llvm_prefix / "bin" / tool

    if not tool_path.exists() or not os.access(tool_path, os.X_OK):
        print(f"Error: Tool '{tool}' not found or not executable at {tool_path}", file=sys.stderr)
        sys.exit(1)

    # Execute the tool with forwarded arguments
    result = subprocess.run([str(tool_path)] + args)
    sys.exit(result.returncode)

if __name__ == "__main__":
    main()