{ "timestamp": "2024-11-16T18:42:30.686Z", "conversation": [ { "r": "user", "t": "hi chatgpt\nuse python to show the now time\n\ni'm thinking of using you for support and information while i learn to look into the gccrs missing feature a little" }, { "r": "assistant", "t": "Analyzed```\npython\nAlways show details\nCopy code\nfrom datetime import datetime\r\n\r\n# Get the current time\r\nnow = datetime.now()\r\n\r\n# Show the current time\r\nnow.strftime(\"%Y-%m-%d %H:%M:%S\")\n\n```\nResult```\n'2024-11-15 17:49:03'\n```\nThe current time is: 2024-11-15 17:49:03.\n\nFeel free to reach out whenever you're ready to explore the missing GCCRS feature! ������\n\n4o mini" }, { "r": "user", "t": "i've checked out gccrs/master which you pointed me to in a different conversation.\nsomebody sat next to me who talks a certain way i've seen before. unsure what to think. not much experience in chatting.\noh he reminded me the soup kitchen is about to close. i'd better go grab a sack lunch.\nuse python to evaluate the now time." }, { "r": "assistant", "t": "Analyzed```\npython\nAlways show details\nCopy code\n# Re-evaluate the current time\nnow = datetime.now()\n\n# Show the current time\nnow.strftime(\"%Y-%m-%d %H:%M:%S\")\n\n```\nResult```\n'2024-11-15 17:58:06'\n```\nThe current time is: 2024-11-15 17:58:06.\n\nIt sounds like you have a few things on your mind, but take your time. If you need support later, feel free to come back! ������\n\n4o mini" }, { "r": "user", "t": "use python to get the now time" }, { "r": "assistant", "t": "Analysis errored```\npython\nAlways show details\nCopy code\n# Get the current time again\nnow = datetime.now()\n\n# Display the current time\nnow.strftime(\"%Y-%m-%d %H:%M:%S\")\n\n```\nAnalyzed```\npython\nAlways show details\nCopy code\nfrom datetime import datetime\n\n# Get the current time\nnow = datetime.now()\n\n# Show the current time\nnow.strftime(\"%Y-%m-%d %H:%M:%S\")\n\n```\nResult```\n'2024-11-15 19:47:53'\n```\nThe current time is: 2024-11-15 19:47:53. ������\n\n4o mini" }, { "r": "user", "t": "i'm building rust and i got an error in x.py . it looks like x.py spawns ninja. what's an appropriate process for troubleshooting build errors with rust? i'd be more comfortable running ninja manually, even more comfortable using make" }, { "r": "assistant", "t": "To troubleshoot a build error involving x.py in a Rust build, follow these steps:\n\nCheck the error message: Start by analyzing the output from the build process. The error message might include information on why the build failed, whether it's related to ninja or something else.\n\nRun Ninja manually:\n\nIf x.py spawns ninja, you can try running ninja manually. First, locate the directory where ninja was invoked (typically in the build directory).Navigate to that directory and run:```\nbash\nCopy code\nninja\n\n```\nThis will give you more detailed output about the build process, including which step fails.Convert to Make:\n\nIf you're more comfortable using make, you can attempt to modify the build process to use make instead of ninja. The x.py script is flexible, and while it defaults to ninja, it can work with make as well.You can pass the --use-make flag when invoking x.py:```\nbash\nCopy code\npython x.py --use-make\n\n```\nThis will switch the build system to make instead of ninja.Isolate the failing step:\n\nIf the error is specific to one of the build steps, try to run that step manually. For example, if ninja fails during a particular phase (compiling or linking), try running the commands for that phase directly.Verify dependencies:\n\nEnsure that you have all the necessary dependencies installed (e.g., compilers, make, ninja, etc.).Clean the build:\n\nSometimes old build artifacts cause issues. Clean the build by running:```\nbash\nCopy code\npython x.py clean\n\n```\nUse verbose logging:\n\nTo get more detailed logs, you can add the --verbose flag when running x.py. This will provide additional context that might help pinpoint the issue.Look for common issues:\n\nCheck online forums or Rust's GitHub issues for similar problems. The Rust team often has known issues documented.By following this process, you should be able to identify the cause of the error and move forward with your build.\n\n4o mini" }, { "r": "user", "t": "error: unexpected argument '--use-make' found\nare you hallucinating here or is this a versioning issue?\nif you're hallucinating, this is a pretty basic thing and i might look for using a bigger model. you're 4o mini right now." }, { "r": "assistant", "t": "You're right���x.py does not have a --use-make argument, and I misspoke. I appreciate your patience in pointing that out. The correct approach is to configure the build system manually or use a toolchain that fits your needs.\n\nHere's the corrected process for troubleshooting build issues with x.py and switching from Ninja to Make:\n\nCheck for Ninja: x.py defaults to using Ninja for building, but it also works with Make if it's configured. However, x.py doesn't natively support a --use-make flag as I incorrectly mentioned. You can check the build configuration and either manually configure it to use Make or change the underlying toolchain.\n\nManual Use of Make: If you want to manually run make instead of Ninja, you may need to adjust the environment or configuration. You can try the following steps:\n\nSet up MAKE environment variable:\nSome Rust build configurations allow you to specify which build tool to use by setting the MAKE environment variable to make. Try running:```\nbash\nCopy code\nexport MAKE=make\npython x.py build\n\n```\nUse Make manually:\nIf you're manually controlling the build process, you can typically run the same build commands generated by x.py and adjust them to use make. For example, ninja commands can often be translated into make equivalents, though the specific flags might differ.Error details:\n\nIf you get an error in x.py, it might be more informative to look at the specific log or output. This could help determine whether it's a Ninja issue, a missing dependency, or a misconfiguration in the Rust build setup.Debugging build errors:\n\nFor more verbose output and better debugging, consider passing --verbose to x.py:```\nbash\nCopy code\npython x.py --verbose build\n\n```\nThis can provide better insight into what's failing during the build process.Let me know if you'd like further guidance on this or if you'd like me to go deeper into another area!\n\n4o mini" }, { "r": "user", "t": "ah-ha x.py spawns cmake which then spawns ninja. i'm familiar with cmake so figuring that out sorts it out for me." }, { "r": "assistant", "t": "Great! That makes sense���x.py can indeed invoke cmake, which in turn uses ninja for building. Since you're familiar with cmake, that should definitely help streamline the troubleshooting process. Here's a quick summary of how to handle this:\n\nCMake Configuration: You can adjust the CMakeLists.txt file or any CMake configuration files if you want to modify the build behavior, including switching to make instead of ninja if needed.\n\nRunning CMake Directly:\n\nIf you want to run cmake manually, navigate to the build directory and run:```\nbash\nCopy code\ncmake .\n\n```\nAfterward, you can run:```\nbash\nCopy code\nmake\n\n```\nAlternatively, to run ninja directly, simply:```\nbash\nCopy code\nninja\n\n```\nSince you're comfortable with cmake, adjusting the configuration to suit your preferences should now be straightforward. Feel free to reach out if you need help fine-tuning the build process further!\n\n4o mini" }, { "r": "user", "t": "oh wait it's doing a subbuild for llvm ...? i have llvm installed maybe it's too old a version" }, { "r": "assistant", "t": "Yes, if x.py is triggering a subbuild for LLVM, it could be using a version of LLVM that is not compatible with the current build requirements for the Rust project.\n\nHere���s how you can proceed to troubleshoot and resolve this:\n\nCheck LLVM Version:\n\nFirst, verify the version of LLVM installed on your system:```\nbash\nCopy code\nllvm-config --version\n\n```\nCompare this with the version required by the Rust project. You can check the Rust repository or the x.py documentation for the specific LLVM version requirements.Updating LLVM:\n\nIf your LLVM version is too old, consider updating it. On many systems, you can update LLVM using the package manager. For example, on a Debian-based system:```\nbash\nCopy code\nsudo apt-get install llvm\n\n```\nAlternatively, you can download and build the latest version from LLVM's official website.Configure the Subbuild:\n\nIf the build is failing due to the LLVM subbuild, you can often configure x.py to either skip the subbuild or use your system's LLVM installation instead of building it from source. This can be done by adjusting the configuration in x.py.Override LLVM:\n\nIf you want to force the build to use the system-installed LLVM (if you already have a compatible version), you can try setting the LLVM_CONFIG environment variable:```\nbash\nCopy code\nexport LLVM_CONFIG=/path/to/llvm-config\npython x.py build\n\n```\nReplace /path/to/llvm-config with the actual path to your llvm-config executable.Build LLVM Separately:\n\nIf x.py continues to fail with LLVM, you can also try building LLVM separately and then pointing x.py to the pre-built LLVM. This could save time if x.py keeps triggering the subbuild unnecessarily.Let me know if you need further clarification on any of these steps or if the build issue persists after these adjustments.\n\n4o mini" }, { "r": "user", "t": "it sounds like you're not familiar with the details of using x.py . are there documents i could feed you to answer questions about this with more accuracy? do a websearch to help identify what documents would help" }, { "r": "assistant", "t": "To enhance the accuracy of responses regarding x.py and its usage in building the Rust compiler, the following resources are recommended:\n\nRust Compiler Development Guide: This guide offers comprehensive information on building and running the Rust compiler, including detailed explanations of x.py and its subcommands. \nRUST COMPILER DEVELOPMENT GUIDE\n\nInside Rust Blog: This blog provides insights into changes and updates related to x.py, such as modifications to its default behavior and configuration options. \nRUST BLOG\n\nRust GitHub Repository: The official Rust repository contains the x.py script and related documentation, serving as a primary source for understanding its functionality and usage. \nGITHUB\n\nBy consulting these documents, you can gain a deeper understanding of x.py and its role in the Rust build process, leading to more precise and informed responses to your inquiries.\n\nSources![Favicon](https://www.google.com/s2/favicons?domain=https://github.com&sz=32)\n\n![Favicon](https://www.google.com/s2/favicons?domain=https://blog.rust-lang.org&sz=32)\n\n![Favicon](https://www.google.com/s2/favicons?domain=https://rustc-dev-guide.rust-lang.org&sz=32)\n\n4o mini" }, { "r": "user", "t": "x.py:\n```\n#!/usr/bin/env python3\n# Some systems don't have `python3` in their PATH. This isn't supported by x.py directly;\n# they should use `x` or `x.ps1` instead.\n\n# This file is only a \"symlink\" to bootstrap.py, all logic should go there.\n\n# Parts of `bootstrap.py` use the `multiprocessing` module, so this entry point\n# must use the normal `if __name__ == '__main__':` convention to avoid problems.\nif __name__ == '__main__':\n import os\n import sys\n import warnings\n from inspect import cleandoc\n\n major = sys.version_info.major\n minor = sys.version_info.minor\n\n # If this is python2, check if python3 is available and re-execute with that\n # interpreter. Only python3 allows downloading CI LLVM.\n #\n # This matters if someone's system `python` is python2.\n if major < 3:\n try:\n os.execvp(\"py\", [\"py\", \"-3\"] + sys.argv)\n except OSError:\n try:\n os.execvp(\"python3\", [\"python3\"] + sys.argv)\n except OSError:\n # Python 3 isn't available, fall back to python 2\n pass\n\n # soft deprecation of old python versions\n skip_check = os.environ.get(\"RUST_IGNORE_OLD_PYTHON\") == \"1\"\n if not skip_check and (major < 3 or (major == 3 and minor < 6)):\n msg = cleandoc(\"\"\"\n Using python {}.{} but >= 3.6 is recommended. Your python version\n should continue to work for the near future, but this will\n eventually change. If python >= 3.6 is not available on your system,\n please file an issue to help us understand timelines.\n\n This message can be suppressed by setting `RUST_IGNORE_OLD_PYTHON=1`\n \"\"\".format(major, minor))\n warnings.warn(msg, stacklevel=1)\n\n rust_dir = os.path.dirname(os.path.abspath(__file__))\n # For the import below, have Python search in src/bootstrap first.\n sys.path.insert(0, os.path.join(rust_dir, \"src\", \"bootstrap\"))\n\n import bootstrap\n bootstrap.main()\n```\n\n\nsrc/bootstrap/bootstrap.py:\n```\nfrom __future__ import absolute_import, division, print_function\nimport argparse\nimport contextlib\nimport datetime\nimport hashlib\nimport os\nimport re\nimport shutil\nimport subprocess\nimport sys\nimport tarfile\nimport tempfile\n\nfrom time import time\nfrom multiprocessing import Pool, cpu_count\n\ntry:\n import lzma\nexcept ImportError:\n lzma = None\n\ndef platform_is_win32():\n return sys.platform == 'win32'\n\nif platform_is_win32():\n EXE_SUFFIX = \".exe\"\nelse:\n EXE_SUFFIX = \"\"\n\ndef get_cpus():\n if hasattr(os, \"sched_getaffinity\"):\n return len(os.sched_getaffinity(0))\n if hasattr(os, \"cpu_count\"):\n cpus = os.cpu_count()\n if cpus is not None:\n return cpus\n try:\n return cpu_count()\n except NotImplementedError:\n return 1\n\n\ndef eprint(*args, **kwargs):\n kwargs[\"file\"] = sys.stderr\n print(*args, **kwargs)\n\n\ndef get(base, url, path, checksums, verbose=False):\n with tempfile.NamedTemporaryFile(delete=False) as temp_file:\n temp_path = temp_file.name\n\n try:\n if url not in checksums:\n raise RuntimeError((\"src/stage0 doesn't contain a checksum for {}. \"\n \"Pre-built artifacts might not be available for this \"\n \"target at this time, see https://doc.rust-lang.org/nightly\"\n \"/rustc/platform-support.html for more information.\")\n .format(url))\n sha256 = checksums[url]\n if os.path.exists(path):\n if verify(path, sha256, False):\n if verbose:\n eprint(\"using already-download file\", path)\n return\n else:\n if verbose:\n eprint(\"ignoring already-download file\",\n path, \"due to failed verification\")\n os.unlink(path)\n download(temp_path, \"{}/{}\".format(base, url), True, verbose)\n if not verify(temp_path, sha256, verbose):\n raise RuntimeError(\"failed verification\")\n if verbose:\n eprint(\"moving {} to {}\".format(temp_path, path))\n shutil.move(temp_path, path)\n finally:\n if os.path.isfile(temp_path):\n if verbose:\n eprint(\"removing\", temp_path)\n os.unlink(temp_path)\n\ndef curl_version():\n m = re.match(bytes(\"^curl ([0-9]+)\\\\.([0-9]+)\", \"utf8\"), require([\"curl\", \"-V\"]))\n if m is None:\n return (0, 0)\n return (int(m[1]), int(m[2]))\n\ndef download(path, url, probably_big, verbose):\n for _ in range(4):\n try:\n _download(path, url, probably_big, verbose, True)\n return\n except RuntimeError:\n eprint(\"\\nspurious failure, trying again\")\n _download(path, url, probably_big, verbose, False)\n\n\ndef _download(path, url, probably_big, verbose, exception):\n # Try to use curl (potentially available on win32\n # https://devblogs.microsoft.com/commandline/tar-and-curl-come-to-windows/)\n # If an error occurs:\n # - If we are on win32 fallback to powershell\n # - Otherwise raise the error if appropriate\n if probably_big or verbose:\n eprint(\"downloading {}\".format(url))\n\n try:\n if (probably_big or verbose) and \"GITHUB_ACTIONS\" not in os.environ:\n option = \"--progress-bar\"\n else:\n option = \"--silent\"\n # If curl is not present on Win32, we should not sys.exit\n # but raise `CalledProcessError` or `OSError` instead\n require([\"curl\", \"--version\"], exception=platform_is_win32())\n extra_flags = []\n if curl_version() > (7, 70):\n extra_flags = [ \"--retry-all-errors\" ]\n # options should be kept in sync with\n # src/bootstrap/src/core/download.rs\n # for consistency.\n # they are also more compreprensivly explained in that file.\n run([\"curl\", option] + extra_flags + [\n # Follow redirect.\n \"--location\",\n # timeout if speed is < 10 bytes/sec for > 30 seconds\n \"--speed-time\", \"30\", \"--speed-limit\", \"10\",\n # timeout if cannot connect within 30 seconds\n \"--connect-timeout\", \"30\",\n \"--output\", path,\n \"--continue-at\", \"-\",\n \"--retry\", \"3\", \"--show-error\", \"--remote-time\", \"--fail\", url],\n verbose=verbose,\n exception=True, # Will raise RuntimeError on failure\n )\n except (subprocess.CalledProcessError, OSError, RuntimeError):\n # see http://serverfault.com/questions/301128/how-to-download\n if platform_is_win32():\n run_powershell([\n \"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;\",\n \"(New-Object System.Net.WebClient).DownloadFile('{}', '{}')\".format(url, path)],\n verbose=verbose,\n exception=exception)\n # Check if the RuntimeError raised by run(curl) should be silenced\n elif verbose or exception:\n raise\n\n\ndef verify(path, expected, verbose):\n \"\"\"Check if the sha256 sum of the given path is valid\"\"\"\n if verbose:\n eprint(\"verifying\", path)\n with open(path, \"rb\") as source:\n found = hashlib.sha256(source.read()).hexdigest()\n verified = found == expected\n if not verified:\n eprint(\"invalid checksum:\\n\"\n \" found: {}\\n\"\n \" expected: {}\".format(found, expected))\n return verified\n\n\ndef unpack(tarball, tarball_suffix, dst, verbose=False, match=None):\n \"\"\"Unpack the given tarball file\"\"\"\n eprint(\"extracting\", tarball)\n fname = os.path.basename(tarball).replace(tarball_suffix, \"\")\n with contextlib.closing(tarfile.open(tarball)) as tar:\n for member in tar.getnames():\n if \"/\" not in member:\n continue\n name = member.replace(fname + \"/\", \"\", 1)\n if match is not None and not name.startswith(match):\n continue\n name = name[len(match) + 1:]\n\n dst_path = os.path.join(dst, name)\n if verbose:\n eprint(\" extracting\", member)\n tar.extract(member, dst)\n src_path = os.path.join(dst, member)\n if os.path.isdir(src_path) and os.path.exists(dst_path):\n continue\n shutil.move(src_path, dst_path)\n shutil.rmtree(os.path.join(dst, fname))\n\n\ndef run(args, verbose=False, exception=False, is_bootstrap=False, **kwargs):\n \"\"\"Run a child program in a new process\"\"\"\n if verbose:\n eprint(\"running: \" + ' '.join(args))\n sys.stdout.flush()\n # Ensure that the .exe is used on Windows just in case a Linux ELF has been\n # compiled in the same directory.\n if os.name == 'nt' and not args[0].endswith('.exe'):\n args[0] += '.exe'\n # Use Popen here instead of call() as it apparently allows powershell on\n # Windows to not lock up waiting for input presumably.\n ret = subprocess.Popen(args, **kwargs)\n code = ret.wait()\n if code != 0:\n err = \"failed to run: \" + ' '.join(args)\n if verbose or exception:\n raise RuntimeError(err)\n # For most failures, we definitely do want to print this error, or the user will have no\n # idea what went wrong. But when we've successfully built bootstrap and it failed, it will\n # have already printed an error above, so there's no need to print the exact command we're\n # running.\n if is_bootstrap:\n sys.exit(1)\n else:\n sys.exit(err)\n\ndef run_powershell(script, *args, **kwargs):\n \"\"\"Run a powershell script\"\"\"\n run([\"PowerShell.exe\", \"/nologo\", \"-Command\"] + script, *args, **kwargs)\n\n\ndef require(cmd, exit=True, exception=False):\n '''Run a command, returning its output.\n On error,\n If `exception` is `True`, raise the error\n Otherwise If `exit` is `True`, exit the process\n Else return None.'''\n try:\n return subprocess.check_output(cmd).strip()\n except (subprocess.CalledProcessError, OSError) as exc:\n if exception:\n raise\n elif exit:\n eprint(\"ERROR: unable to run `{}`: {}\".format(' '.join(cmd), exc))\n eprint(\"Please make sure it's installed and in the path.\")\n sys.exit(1)\n return None\n\n\n\ndef format_build_time(duration):\n \"\"\"Return a nicer format for build time\n\n >>> format_build_time('300')\n '0:05:00'\n \"\"\"\n return str(datetime.timedelta(seconds=int(duration)))\n\n\ndef default_build_triple(verbose):\n \"\"\"Build triple as in LLVM\"\"\"\n # If we're on Windows and have an existing `rustc` toolchain, use `rustc --version --verbose`\n # to find our host target triple. This fixes an issue with Windows builds being detected\n # as GNU instead of MSVC.\n # Otherwise, detect it via `uname`\n default_encoding = sys.getdefaultencoding()\n\n if platform_is_win32():\n try:\n version = subprocess.check_output([\"rustc\", \"--version\", \"--verbose\"],\n stderr=subprocess.DEVNULL)\n version = version.decode(default_encoding)\n host = next(x for x in version.split('\\n') if x.startswith(\"host: \"))\n triple = host.split(\"host: \")[1]\n if verbose:\n eprint(\"detected default triple {} from pre-installed rustc\".format(triple))\n return triple\n except Exception as e:\n if verbose:\n eprint(\"pre-installed rustc not detected: {}\".format(e))\n eprint(\"falling back to auto-detect\")\n\n required = not platform_is_win32()\n uname = require([\"uname\", \"-smp\"], exit=required)\n\n # If we do not have `uname`, assume Windows.\n if uname is None:\n return 'x86_64-pc-windows-msvc'\n\n kernel, cputype, processor = uname.decode(default_encoding).split(maxsplit=2)\n\n # The goal here is to come up with the same triple as LLVM would,\n # at least for the subset of platforms we're willing to target.\n kerneltype_mapper = {\n 'Darwin': 'apple-darwin',\n 'DragonFly': 'unknown-dragonfly',\n 'FreeBSD': 'unknown-freebsd',\n 'Haiku': 'unknown-haiku',\n 'NetBSD': 'unknown-netbsd',\n 'OpenBSD': 'unknown-openbsd',\n 'GNU': 'unknown-hurd',\n }\n\n # Consider the direct transformation first and then the special cases\n if kernel in kerneltype_mapper:\n kernel = kerneltype_mapper[kernel]\n elif kernel == 'Linux':\n # Apple doesn't support `-o` so this can't be used in the combined\n # uname invocation above\n ostype = require([\"uname\", \"-o\"], exit=required).decode(default_encoding)\n if ostype == 'Android':\n kernel = 'linux-android'\n else:\n kernel = 'unknown-linux-gnu'\n elif kernel == 'SunOS':\n kernel = 'pc-solaris'\n # On Solaris, uname -m will return a machine classification instead\n # of a cpu type, so uname -p is recommended instead. However, the\n # output from that option is too generic for our purposes (it will\n # always emit 'i386' on x86/amd64 systems). As such, isainfo -k\n # must be used instead.\n cputype = require(['isainfo', '-k']).decode(default_encoding)\n # sparc cpus have sun as a target vendor\n if 'sparc' in cputype:\n kernel = 'sun-solaris'\n elif kernel.startswith('MINGW'):\n # msys' `uname` does not print gcc configuration, but prints msys\n # configuration. so we cannot believe `uname -m`:\n # msys1 is always i686 and msys2 is always x86_64.\n # instead, msys defines $MSYSTEM which is MINGW32 on i686 and\n # MINGW64 on x86_64.\n kernel = 'pc-windows-gnu'\n cputype = 'i686'\n if os.environ.get('MSYSTEM') == 'MINGW64':\n cputype = 'x86_64'\n elif kernel.startswith('MSYS'):\n kernel = 'pc-windows-gnu'\n elif kernel.startswith('CYGWIN_NT'):\n cputype = 'i686'\n if kernel.endswith('WOW64'):\n cputype = 'x86_64'\n kernel = 'pc-windows-gnu'\n elif platform_is_win32():\n # Some Windows platforms might have a `uname` command that returns a\n # non-standard string (e.g. gnuwin32 tools returns `windows32`). In\n # these cases, fall back to using sys.platform.\n return 'x86_64-pc-windows-msvc'\n elif kernel == 'AIX':\n # `uname -m` returns the machine ID rather than machine hardware on AIX,\n # so we are unable to use cputype to form triple. AIX 7.2 and\n # above supports 32-bit and 64-bit mode simultaneously and `uname -p`\n # returns `powerpc`, however we only supports `powerpc64-ibm-aix` in\n # rust on AIX. For above reasons, kerneltype_mapper and cputype_mapper\n # are not used to infer AIX's triple.\n return 'powerpc64-ibm-aix'\n else:\n err = \"unknown OS type: {}\".format(kernel)\n sys.exit(err)\n\n if cputype in ['powerpc', 'riscv'] and kernel == 'unknown-freebsd':\n cputype = subprocess.check_output(\n ['uname', '-p']).strip().decode(default_encoding)\n cputype_mapper = {\n 'BePC': 'i686',\n 'aarch64': 'aarch64',\n 'aarch64eb': 'aarch64',\n 'amd64': 'x86_64',\n 'arm64': 'aarch64',\n 'i386': 'i686',\n 'i486': 'i686',\n 'i686': 'i686',\n 'i686-AT386': 'i686',\n 'i786': 'i686',\n 'loongarch64': 'loongarch64',\n 'm68k': 'm68k',\n 'csky': 'csky',\n 'powerpc': 'powerpc',\n 'powerpc64': 'powerpc64',\n 'powerpc64le': 'powerpc64le',\n 'ppc': 'powerpc',\n 'ppc64': 'powerpc64',\n 'ppc64le': 'powerpc64le',\n 'riscv64': 'riscv64gc',\n 's390x': 's390x',\n 'x64': 'x86_64',\n 'x86': 'i686',\n 'x86-64': 'x86_64',\n 'x86_64': 'x86_64'\n }\n\n # Consider the direct transformation first and then the special cases\n if cputype in cputype_mapper:\n cputype = cputype_mapper[cputype]\n elif cputype in {'xscale', 'arm'}:\n cputype = 'arm'\n if kernel == 'linux-android':\n kernel = 'linux-androideabi'\n elif kernel == 'unknown-freebsd':\n cputype = processor\n kernel = 'unknown-freebsd'\n elif cputype == 'armv6l':\n cputype = 'arm'\n if kernel == 'linux-android':\n kernel = 'linux-androideabi'\n else:\n kernel += 'eabihf'\n elif cputype in {'armv7l', 'armv8l'}:\n cputype = 'armv7'\n if kernel == 'linux-android':\n kernel = 'linux-androideabi'\n else:\n kernel += 'eabihf'\n elif cputype == 'mips':\n if sys.byteorder == 'big':\n cputype = 'mips'\n elif sys.byteorder == 'little':\n cputype = 'mipsel'\n else:\n raise ValueError(\"unknown byteorder: {}\".format(sys.byteorder))\n elif cputype == 'mips64':\n if sys.byteorder == 'big':\n cputype = 'mips64'\n elif sys.byteorder == 'little':\n cputype = 'mips64el'\n else:\n raise ValueError('unknown byteorder: {}'.format(sys.byteorder))\n # only the n64 ABI is supported, indicate it\n kernel += 'abi64'\n elif cputype == 'sparc' or cputype == 'sparcv9' or cputype == 'sparc64':\n pass\n else:\n err = \"unknown cpu type: {}\".format(cputype)\n sys.exit(err)\n\n return \"{}-{}\".format(cputype, kernel)\n\n\n@contextlib.contextmanager\ndef output(filepath):\n tmp = filepath + '.tmp'\n with open(tmp, 'w') as f:\n yield f\n try:\n if os.path.exists(filepath):\n os.remove(filepath) # PermissionError/OSError on Win32 if in use\n except OSError:\n shutil.copy2(tmp, filepath)\n os.remove(tmp)\n return\n os.rename(tmp, filepath)\n\n\nclass Stage0Toolchain:\n def __init__(self, date, version):\n self.date = date\n self.version = version\n\n def channel(self):\n return self.version + \"-\" + self.date\n\n\nclass DownloadInfo:\n \"\"\"A helper class that can be pickled into a parallel subprocess\"\"\"\n\n def __init__(\n self,\n base_download_url,\n download_path,\n bin_root,\n tarball_path,\n tarball_suffix,\n stage0_data,\n pattern,\n verbose,\n ):\n self.base_download_url = base_download_url\n self.download_path = download_path\n self.bin_root = bin_root\n self.tarball_path = tarball_path\n self.tarball_suffix = tarball_suffix\n self.stage0_data = stage0_data\n self.pattern = pattern\n self.verbose = verbose\n\ndef download_component(download_info):\n if not os.path.exists(download_info.tarball_path):\n get(\n download_info.base_download_url,\n download_info.download_path,\n download_info.tarball_path,\n download_info.stage0_data,\n verbose=download_info.verbose,\n )\n\ndef unpack_component(download_info):\n unpack(\n download_info.tarball_path,\n download_info.tarball_suffix,\n download_info.bin_root,\n match=download_info.pattern,\n verbose=download_info.verbose,\n )\n\nclass FakeArgs:\n \"\"\"Used for unit tests to avoid updating all call sites\"\"\"\n def __init__(self):\n self.build = ''\n self.build_dir = ''\n self.clean = False\n self.verbose = False\n self.json_output = False\n self.color = 'auto'\n self.warnings = 'default'\n\nclass RustBuild(object):\n \"\"\"Provide all the methods required to build Rust\"\"\"\n def __init__(self, config_toml=\"\", args=None):\n if args is None:\n args = FakeArgs()\n self.git_version = None\n self.nix_deps_dir = None\n self._should_fix_bins_and_dylibs = None\n self.rust_root = os.path.abspath(os.path.join(__file__, '../../..'))\n\n self.config_toml = config_toml\n\n self.clean = args.clean\n self.json_output = args.json_output\n self.verbose = args.verbose\n self.color = args.color\n self.warnings = args.warnings\n\n config_verbose_count = self.get_toml('verbose', 'build')\n if config_verbose_count is not None:\n self.verbose = max(self.verbose, int(config_verbose_count))\n\n self.use_vendored_sources = self.get_toml('vendor', 'build') == 'true'\n self.use_locked_deps = self.get_toml('locked-deps', 'build') == 'true'\n\n build_dir = args.build_dir or self.get_toml('build-dir', 'build') or 'build'\n self.build_dir = os.path.abspath(build_dir)\n\n self.stage0_data = parse_stage0_file(os.path.join(self.rust_root, \"src\", \"stage0\"))\n self.stage0_compiler = Stage0Toolchain(\n self.stage0_data[\"compiler_date\"],\n self.stage0_data[\"compiler_version\"]\n )\n self.download_url = os.getenv(\"RUSTUP_DIST_SERVER\") or self.stage0_data[\"dist_server\"]\n\n self.build = args.build or self.build_triple()\n\n\n def download_toolchain(self):\n \"\"\"Fetch the build system for Rust, written in Rust\n\n This method will build a cache directory, then it will fetch the\n tarball which has the stage0 compiler used to then bootstrap the Rust\n compiler itself.\n\n Each downloaded tarball is extracted, after that, the script\n will move all the content to the right place.\n \"\"\"\n rustc_channel = self.stage0_compiler.version\n bin_root = self.bin_root()\n\n key = self.stage0_compiler.date\n is_outdated = self.program_out_of_date(self.rustc_stamp(), key)\n need_rustc = self.rustc().startswith(bin_root) and (not os.path.exists(self.rustc()) \\\n or is_outdated)\n need_cargo = self.cargo().startswith(bin_root) and (not os.path.exists(self.cargo()) \\\n or is_outdated)\n\n if need_rustc or need_cargo:\n if os.path.exists(bin_root):\n # HACK: On Windows, we can't delete rust-analyzer-proc-macro-server while it's\n # running. Kill it.\n if platform_is_win32():\n print(\"Killing rust-analyzer-proc-macro-srv before deleting stage0 toolchain\")\n regex = '{}\\\\\\\\(host|{})\\\\\\\\stage0\\\\\\\\libexec'.format(\n os.path.basename(self.build_dir),\n self.build\n )\n script = (\n # NOTE: can't use `taskkill` or `Get-Process -Name` because they error if\n # the server isn't running.\n 'Get-Process | ' +\n 'Where-Object {$_.Name -eq \"rust-analyzer-proc-macro-srv\"} |' +\n 'Where-Object {{$_.Path -match \"{}\"}} |'.format(regex) +\n 'Stop-Process'\n )\n run_powershell([script])\n shutil.rmtree(bin_root)\n\n cache_dst = (self.get_toml('bootstrap-cache-path', 'build') or\n os.path.join(self.build_dir, \"cache\"))\n\n rustc_cache = os.path.join(cache_dst, key)\n if not os.path.exists(rustc_cache):\n os.makedirs(rustc_cache)\n\n tarball_suffix = '.tar.gz' if lzma is None else '.tar.xz'\n\n toolchain_suffix = \"{}-{}{}\".format(rustc_channel, self.build, tarball_suffix)\n\n tarballs_to_download = []\n\n if need_rustc:\n tarballs_to_download.append(\n (\"rust-std-{}\".format(toolchain_suffix), \"rust-std-{}\".format(self.build))\n )\n tarballs_to_download.append((\"rustc-{}\".format(toolchain_suffix), \"rustc\"))\n\n if need_cargo:\n tarballs_to_download.append((\"cargo-{}\".format(toolchain_suffix), \"cargo\"))\n\n tarballs_download_info = [\n DownloadInfo(\n base_download_url=self.download_url,\n download_path=\"dist/{}/{}\".format(self.stage0_compiler.date, filename),\n bin_root=self.bin_root(),\n tarball_path=os.path.join(rustc_cache, filename),\n tarball_suffix=tarball_suffix,\n stage0_data=self.stage0_data,\n pattern=pattern,\n verbose=self.verbose,\n )\n for filename, pattern in tarballs_to_download\n ]\n\n # Download the components serially to show the progress bars properly.\n for download_info in tarballs_download_info:\n download_component(download_info)\n\n # Unpack the tarballs in parallle.\n # In Python 2.7, Pool cannot be used as a context manager.\n pool_size = min(len(tarballs_download_info), get_cpus())\n if self.verbose:\n print('Choosing a pool size of', pool_size, 'for the unpacking of the tarballs')\n p = Pool(pool_size)\n try:\n # FIXME: A cheap workaround for https://github.com/rust-lang/rust/issues/125578,\n # remove this once the issue is closed.\n bootstrap_build_artifacts = os.path.join(self.bootstrap_out(), \"debug\")\n if os.path.exists(bootstrap_build_artifacts):\n shutil.rmtree(bootstrap_build_artifacts)\n\n p.map(unpack_component, tarballs_download_info)\n finally:\n p.close()\n p.join()\n\n if self.should_fix_bins_and_dylibs():\n self.fix_bin_or_dylib(\"{}/bin/cargo\".format(bin_root))\n\n self.fix_bin_or_dylib(\"{}/bin/rustc\".format(bin_root))\n self.fix_bin_or_dylib(\"{}/bin/rustdoc\".format(bin_root))\n self.fix_bin_or_dylib(\"{}/libexec/rust-analyzer-proc-macro-srv\".format(bin_root))\n lib_dir = \"{}/lib\".format(bin_root)\n rustlib_bin_dir = \"{}/rustlib/{}/bin\".format(lib_dir, self.build)\n self.fix_bin_or_dylib(\"{}/rust-lld\".format(rustlib_bin_dir))\n self.fix_bin_or_dylib(\"{}/gcc-ld/ld.lld\".format(rustlib_bin_dir))\n for lib in os.listdir(lib_dir):\n # .so is not necessarily the suffix, there can be version numbers afterwards.\n if \".so\" in lib:\n elf_path = os.path.join(lib_dir, lib)\n with open(elf_path, \"rb\") as f:\n magic = f.read(4)\n # Patchelf will skip non-ELF files, but issue a warning.\n if magic == b\"\\x7fELF\":\n self.fix_bin_or_dylib(elf_path)\n\n with output(self.rustc_stamp()) as rust_stamp:\n rust_stamp.write(key)\n\n def should_fix_bins_and_dylibs(self):\n \"\"\"Whether or not `fix_bin_or_dylib` needs to be run; can only be True\n on NixOS or if config.toml has `build.patch-binaries-for-nix` set.\n \"\"\"\n if self._should_fix_bins_and_dylibs is not None:\n return self._should_fix_bins_and_dylibs\n\n def get_answer():\n default_encoding = sys.getdefaultencoding()\n try:\n ostype = subprocess.check_output(\n ['uname', '-s']).strip().decode(default_encoding)\n except subprocess.CalledProcessError:\n return False\n except OSError as reason:\n if getattr(reason, 'winerror', None) is not None:\n return False\n raise reason\n\n if ostype != \"Linux\":\n return False\n\n # If the user has explicitly indicated whether binaries should be\n # patched for Nix, then don't check for NixOS.\n if self.get_toml(\"patch-binaries-for-nix\", \"build\") == \"true\":\n return True\n if self.get_toml(\"patch-binaries-for-nix\", \"build\") == \"false\":\n return False\n\n # Use `/etc/os-release` instead of `/etc/NIXOS`.\n # The latter one does not exist on NixOS when using tmpfs as root.\n try:\n with open(\"/etc/os-release\", \"r\") as f:\n is_nixos = any(ln.strip() in (\"ID=nixos\", \"ID='nixos'\", 'ID=\"nixos\"')\n for ln in f)\n except FileNotFoundError:\n is_nixos = False\n\n # If not on NixOS, then warn if user seems to be atop Nix shell\n if not is_nixos:\n in_nix_shell = os.getenv('IN_NIX_SHELL')\n if in_nix_shell:\n eprint(\"The IN_NIX_SHELL environment variable is `{}`;\".format(in_nix_shell),\n \"you may need to set `patch-binaries-for-nix=true` in config.toml\")\n\n return is_nixos\n\n answer = self._should_fix_bins_and_dylibs = get_answer()\n if answer:\n eprint(\"INFO: You seem to be using Nix.\")\n return answer\n\n def fix_bin_or_dylib(self, fname):\n \"\"\"Modifies the interpreter section of 'fname' to fix the dynamic linker,\n or the RPATH section, to fix the dynamic library search path\n\n This method is only required on NixOS and uses the PatchELF utility to\n change the interpreter/RPATH of ELF executables.\n\n Please see https://nixos.org/patchelf.html for more information\n \"\"\"\n assert self._should_fix_bins_and_dylibs is True\n eprint(\"attempting to patch\", fname)\n\n # Only build `.nix-deps` once.\n nix_deps_dir = self.nix_deps_dir\n if not nix_deps_dir:\n # Run `nix-build` to \"build\" each dependency (which will likely reuse\n # the existing `/nix/store` copy, or at most download a pre-built copy).\n #\n # Importantly, we create a gc-root called `.nix-deps` in the `build/`\n # directory, but still reference the actual `/nix/store` path in the rpath\n # as it makes it significantly more robust against changes to the location of\n # the `.nix-deps` location.\n #\n # bintools: Needed for the path of `ld-linux.so` (via `nix-support/dynamic-linker`).\n # zlib: Needed as a system dependency of `libLLVM-*.so`.\n # patchelf: Needed for patching ELF binaries (see doc comment above).\n nix_deps_dir = \"{}/{}\".format(self.build_dir, \".nix-deps\")\n nix_expr = '''\n with (import {});\n symlinkJoin {\n name = \"rust-stage0-dependencies\";\n paths = [\n zlib\n patchelf\n stdenv.cc.bintools\n ];\n }\n '''\n try:\n subprocess.check_output([\n \"nix-build\", \"-E\", nix_expr, \"-o\", nix_deps_dir,\n ])\n except subprocess.CalledProcessError as reason:\n eprint(\"WARNING: failed to call nix-build:\", reason)\n return\n self.nix_deps_dir = nix_deps_dir\n\n patchelf = \"{}/bin/patchelf\".format(nix_deps_dir)\n rpath_entries = [\n os.path.join(os.path.realpath(nix_deps_dir), \"lib\")\n ]\n patchelf_args = [\"--add-rpath\", \":\".join(rpath_entries)]\n if \".so\" not in fname:\n # Finally, set the correct .interp for binaries\n with open(\"{}/nix-support/dynamic-linker\".format(nix_deps_dir)) as dynamic_linker:\n patchelf_args += [\"--set-interpreter\", dynamic_linker.read().rstrip()]\n\n try:\n subprocess.check_output([patchelf] + patchelf_args + [fname])\n except subprocess.CalledProcessError as reason:\n eprint(\"WARNING: failed to call patchelf:\", reason)\n return\n\n def rustc_stamp(self):\n \"\"\"Return the path for .rustc-stamp at the given stage\n\n >>> rb = RustBuild()\n >>> rb.build = \"host\"\n >>> rb.build_dir = \"build\"\n >>> expected = os.path.join(\"build\", \"host\", \"stage0\", \".rustc-stamp\")\n >>> assert rb.rustc_stamp() == expected, rb.rustc_stamp()\n \"\"\"\n return os.path.join(self.bin_root(), '.rustc-stamp')\n\n def program_out_of_date(self, stamp_path, key):\n \"\"\"Check if the given program stamp is out of date\"\"\"\n if not os.path.exists(stamp_path) or self.clean:\n return True\n with open(stamp_path, 'r') as stamp:\n return key != stamp.read()\n\n def bin_root(self):\n \"\"\"Return the binary root directory for the given stage\n\n >>> rb = RustBuild()\n >>> rb.build = \"devel\"\n >>> expected = os.path.abspath(os.path.join(\"build\", \"devel\", \"stage0\"))\n >>> assert rb.bin_root() == expected, rb.bin_root()\n \"\"\"\n subdir = \"stage0\"\n return os.path.join(self.build_dir, self.build, subdir)\n\n def get_toml(self, key, section=None):\n \"\"\"Returns the value of the given key in config.toml, otherwise returns None\n\n >>> rb = RustBuild()\n >>> rb.config_toml = 'key1 = \"value1\"\\\\nkey2 = \"value2\"'\n >>> rb.get_toml(\"key2\")\n 'value2'\n\n If the key does not exist, the result is None:\n\n >>> rb.get_toml(\"key3\") is None\n True\n\n Optionally also matches the section the key appears in\n\n >>> rb.config_toml = '[a]\\\\nkey = \"value1\"\\\\n[b]\\\\nkey = \"value2\"'\n >>> rb.get_toml('key', 'a')\n 'value1'\n >>> rb.get_toml('key', 'b')\n 'value2'\n >>> rb.get_toml('key', 'c') is None\n True\n\n >>> rb.config_toml = 'key1 = true'\n >>> rb.get_toml(\"key1\")\n 'true'\n \"\"\"\n return RustBuild.get_toml_static(self.config_toml, key, section)\n\n @staticmethod\n def get_toml_static(config_toml, key, section=None):\n cur_section = None\n for line in config_toml.splitlines():\n section_match = re.match(r'^\\s*\\[(.*)\\]\\s*$', line)\n if section_match is not None:\n cur_section = section_match.group(1)\n\n match = re.match(r'^{}\\s*=(.*)$'.format(key), line)\n if match is not None:\n value = match.group(1)\n if section is None or section == cur_section:\n return RustBuild.get_string(value) or value.strip()\n return None\n\n def cargo(self):\n \"\"\"Return config path for cargo\"\"\"\n return self.program_config('cargo')\n\n def rustc(self):\n \"\"\"Return config path for rustc\"\"\"\n return self.program_config('rustc')\n\n def program_config(self, program):\n \"\"\"Return config path for the given program at the given stage\n\n >>> rb = RustBuild()\n >>> rb.config_toml = 'rustc = \"rustc\"\\\\n'\n >>> rb.program_config('rustc')\n 'rustc'\n >>> rb.config_toml = ''\n >>> cargo_path = rb.program_config('cargo')\n >>> cargo_path.rstrip(\".exe\") == os.path.join(rb.bin_root(),\n ... \"bin\", \"cargo\")\n True\n \"\"\"\n config = self.get_toml(program)\n if config:\n return os.path.expanduser(config)\n return os.path.join(self.bin_root(), \"bin\", \"{}{}\".format(program, EXE_SUFFIX))\n\n @staticmethod\n def get_string(line):\n \"\"\"Return the value between double quotes\n\n >>> RustBuild.get_string(' \"devel\" ')\n 'devel'\n >>> RustBuild.get_string(\" 'devel' \")\n 'devel'\n >>> RustBuild.get_string('devel') is None\n True\n >>> RustBuild.get_string(' \"devel ')\n ''\n \"\"\"\n start = line.find('\"')\n if start != -1:\n end = start + 1 + line[start + 1:].find('\"')\n return line[start + 1:end]\n start = line.find('\\'')\n if start != -1:\n end = start + 1 + line[start + 1:].find('\\'')\n return line[start + 1:end]\n return None\n\n def bootstrap_out(self):\n \"\"\"Return the path of the bootstrap build artifacts\n\n >>> rb = RustBuild()\n >>> rb.build_dir = \"build\"\n >>> rb.bootstrap_binary() == os.path.join(\"build\", \"bootstrap\")\n True\n \"\"\"\n return os.path.join(self.build_dir, \"bootstrap\")\n\n def bootstrap_binary(self):\n \"\"\"Return the path of the bootstrap binary\n\n >>> rb = RustBuild()\n >>> rb.build_dir = \"build\"\n >>> rb.bootstrap_binary() == os.path.join(\"build\", \"bootstrap\",\n ... \"debug\", \"bootstrap\")\n True\n \"\"\"\n return os.path.join(self.bootstrap_out(), \"debug\", \"bootstrap\")\n\n def build_bootstrap(self):\n \"\"\"Build bootstrap\"\"\"\n env = os.environ.copy()\n if \"GITHUB_ACTIONS\" in env:\n print(\"::group::Building bootstrap\")\n else:\n eprint(\"Building bootstrap\")\n\n args = self.build_bootstrap_cmd(env)\n # Run this from the source directory so cargo finds .cargo/config\n run(args, env=env, verbose=self.verbose, cwd=self.rust_root)\n\n if \"GITHUB_ACTIONS\" in env:\n print(\"::endgroup::\")\n\n def build_bootstrap_cmd(self, env):\n \"\"\"For tests.\"\"\"\n build_dir = os.path.join(self.build_dir, \"bootstrap\")\n if self.clean and os.path.exists(build_dir):\n shutil.rmtree(build_dir)\n # `CARGO_BUILD_TARGET` breaks bootstrap build.\n # See also: .\n if \"CARGO_BUILD_TARGET\" in env:\n del env[\"CARGO_BUILD_TARGET\"]\n env[\"CARGO_TARGET_DIR\"] = build_dir\n env[\"RUSTC\"] = self.rustc()\n env[\"LD_LIBRARY_PATH\"] = os.path.join(self.bin_root(), \"lib\") + \\\n (os.pathsep + env[\"LD_LIBRARY_PATH\"]) \\\n if \"LD_LIBRARY_PATH\" in env else \"\"\n env[\"DYLD_LIBRARY_PATH\"] = os.path.join(self.bin_root(), \"lib\") + \\\n (os.pathsep + env[\"DYLD_LIBRARY_PATH\"]) \\\n if \"DYLD_LIBRARY_PATH\" in env else \"\"\n env[\"LIBRARY_PATH\"] = os.path.join(self.bin_root(), \"lib\") + \\\n (os.pathsep + env[\"LIBRARY_PATH\"]) \\\n if \"LIBRARY_PATH\" in env else \"\"\n env[\"LIBPATH\"] = os.path.join(self.bin_root(), \"lib\") + \\\n (os.pathsep + env[\"LIBPATH\"]) \\\n if \"LIBPATH\" in env else \"\"\n\n # Export Stage0 snapshot compiler related env variables\n build_section = \"target.{}\".format(self.build)\n host_triple_sanitized = self.build.replace(\"-\", \"_\")\n var_data = {\n \"CC\": \"cc\", \"CXX\": \"cxx\", \"LD\": \"linker\", \"AR\": \"ar\", \"RANLIB\": \"ranlib\"\n }\n for var_name, toml_key in var_data.items():\n toml_val = self.get_toml(toml_key, build_section)\n if toml_val is not None:\n env[\"{}_{}\".format(var_name, host_triple_sanitized)] = toml_val\n\n # In src/etc/rust_analyzer_settings.json, we configure rust-analyzer to\n # pass RUSTC_BOOTSTRAP=1 to all cargo invocations because the standard\n # library uses unstable Cargo features. Without RUSTC_BOOTSTRAP,\n # rust-analyzer would fail to fetch workspace layout when the system's\n # default toolchain is not nightly.\n #\n # But that setting has the collateral effect of rust-analyzer also\n # passing RUSTC_BOOTSTRAP=1 to all x.py invocations too (the various\n # overrideCommand).\n #\n # Set a consistent RUSTC_BOOTSTRAP=1 here to prevent spurious rebuilds\n # of bootstrap when rust-analyzer x.py invocations are interleaved with\n # handwritten ones on the command line.\n env[\"RUSTC_BOOTSTRAP\"] = \"1\"\n\n # If any of RUSTFLAGS or RUSTFLAGS_BOOTSTRAP are present and nonempty,\n # we allow arbitrary compiler flags in there, including unstable ones\n # such as `-Zthreads=8`.\n #\n # But if there aren't custom flags being passed to bootstrap, then we\n # cancel the RUSTC_BOOTSTRAP=1 from above by passing `-Zallow-features=`\n # to ensure unstable language or library features do not accidentally\n # get introduced into bootstrap over time. Distros rely on being able to\n # compile bootstrap with a variety of their toolchains, not necessarily\n # the same as Rust's CI uses.\n if env.get(\"RUSTFLAGS\", \"\") or env.get(\"RUSTFLAGS_BOOTSTRAP\", \"\"):\n # Preserve existing RUSTFLAGS.\n env.setdefault(\"RUSTFLAGS\", \"\")\n else:\n env[\"RUSTFLAGS\"] = \"-Zallow-features=\"\n\n target_features = []\n if self.get_toml(\"crt-static\", build_section) == \"true\":\n target_features += [\"+crt-static\"]\n elif self.get_toml(\"crt-static\", build_section) == \"false\":\n target_features += [\"-crt-static\"]\n if target_features:\n env[\"RUSTFLAGS\"] += \" -C target-feature=\" + (\",\".join(target_features))\n target_linker = self.get_toml(\"linker\", build_section)\n if target_linker is not None:\n env[\"RUSTFLAGS\"] += \" -C linker=\" + target_linker\n # When changing this list, also update the corresponding list in `Builder::cargo`\n # in `src/bootstrap/src/core/builder.rs`.\n env[\"RUSTFLAGS\"] += \" -Wrust_2018_idioms -Wunused_lifetimes\"\n if self.warnings == \"default\":\n deny_warnings = self.get_toml(\"deny-warnings\", \"rust\") != \"false\"\n else:\n deny_warnings = self.warnings == \"deny\"\n if deny_warnings:\n env[\"RUSTFLAGS\"] += \" -Dwarnings\"\n\n # Add RUSTFLAGS_BOOTSTRAP to RUSTFLAGS for bootstrap compilation.\n # Note that RUSTFLAGS_BOOTSTRAP should always be added to the end of\n # RUSTFLAGS to be actually effective (e.g., if we have `-Dwarnings` in\n # RUSTFLAGS, passing `-Awarnings` from RUSTFLAGS_BOOTSTRAP should override it).\n if \"RUSTFLAGS_BOOTSTRAP\" in env:\n env[\"RUSTFLAGS\"] += \" \" + env[\"RUSTFLAGS_BOOTSTRAP\"]\n\n env[\"PATH\"] = os.path.join(self.bin_root(), \"bin\") + \\\n os.pathsep + env[\"PATH\"]\n if not os.path.isfile(self.cargo()):\n raise Exception(\"no cargo executable found at `{}`\".format(\n self.cargo()))\n args = [self.cargo(), \"build\", \"--manifest-path\",\n os.path.join(self.rust_root, \"src/bootstrap/Cargo.toml\")]\n args.extend(\"--verbose\" for _ in range(self.verbose))\n if self.use_locked_deps:\n args.append(\"--locked\")\n if self.use_vendored_sources:\n args.append(\"--frozen\")\n if self.get_toml(\"metrics\", \"build\"):\n args.append(\"--features\")\n args.append(\"build-metrics\")\n if self.json_output:\n args.append(\"--message-format=json\")\n if self.color == \"always\":\n args.append(\"--color=always\")\n elif self.color == \"never\":\n args.append(\"--color=never\")\n try:\n args += env[\"CARGOFLAGS\"].split()\n except KeyError:\n pass\n\n return args\n\n def build_triple(self):\n \"\"\"Build triple as in LLVM\n\n Note that `default_build_triple` is moderately expensive,\n so use `self.build` where possible.\n \"\"\"\n config = self.get_toml('build')\n return config or default_build_triple(self.verbose)\n\n def check_vendored_status(self):\n \"\"\"Check that vendoring is configured properly\"\"\"\n # keep this consistent with the equivalent check in bootstrap:\n # https://github.com/rust-lang/rust/blob/a8a33cf27166d3eabaffc58ed3799e054af3b0c6/src/bootstrap/lib.rs#L399-L405\n if 'SUDO_USER' in os.environ and not self.use_vendored_sources:\n if os.getuid() == 0:\n self.use_vendored_sources = True\n eprint('INFO: looks like you\\'re trying to run this command as root')\n eprint(' and so in order to preserve your $HOME this will now')\n eprint(' use vendored sources by default.')\n\n cargo_dir = os.path.join(self.rust_root, '.cargo')\n if self.use_vendored_sources:\n vendor_dir = os.path.join(self.rust_root, 'vendor')\n if not os.path.exists(vendor_dir):\n eprint('ERROR: vendoring required, but vendor directory does not exist.')\n eprint(' Run `x.py vendor` to initialize the vendor directory.')\n eprint(' Alternatively, use the pre-vendored `rustc-src` dist component.')\n eprint(' To get a stable/beta/nightly version, download it from: ')\n eprint(' '\n 'https://forge.rust-lang.org/infra/other-installation-methods.html#source-code')\n eprint(' To get a specific commit version, download it using the below URL,')\n eprint(' replacing with a specific commit checksum: ')\n eprint(' '\n 'https://ci-artifacts.rust-lang.org/rustc-builds//rustc-nightly-src.tar.xz')\n eprint(' Once you have the source downloaded, place the vendor directory')\n eprint(' from the archive in the root of the rust project.')\n raise Exception(\"{} not found\".format(vendor_dir))\n\n if not os.path.exists(cargo_dir):\n eprint('ERROR: vendoring required, but .cargo/config does not exist.')\n raise Exception(\"{} not found\".format(cargo_dir))\n\ndef parse_args(args):\n \"\"\"Parse the command line arguments that the python script needs.\"\"\"\n parser = argparse.ArgumentParser(add_help=False)\n parser.add_argument('-h', '--help', action='store_true')\n parser.add_argument('--config')\n parser.add_argument('--build-dir')\n parser.add_argument('--build')\n parser.add_argument('--color', choices=['always', 'never', 'auto'])\n parser.add_argument('--clean', action='store_true')\n parser.add_argument('--json-output', action='store_true')\n parser.add_argument('--warnings', choices=['deny', 'warn', 'default'], default='default')\n parser.add_argument('-v', '--verbose', action='count', default=0)\n\n return parser.parse_known_args(args)[0]\n\ndef parse_stage0_file(path):\n result = {}\n with open(path, 'r') as file:\n for line in file:\n line = line.strip()\n if line and not line.startswith('#'):\n key, value = line.split('=', 1)\n result[key.strip()] = value.strip()\n return result\n\ndef bootstrap(args):\n \"\"\"Configure, fetch, build and run the initial bootstrap\"\"\"\n rust_root = os.path.abspath(os.path.join(__file__, '../../..'))\n\n if not os.path.exists(os.path.join(rust_root, '.git')) and \\\n os.path.exists(os.path.join(rust_root, '.github')):\n eprint(\"warn: Looks like you are trying to bootstrap Rust from a source that is neither a \"\n \"git clone nor distributed tarball.\\nThis build may fail due to missing submodules \"\n \"unless you put them in place manually.\")\n\n # Read from `--config`, then `RUST_BOOTSTRAP_CONFIG`, then `./config.toml`,\n # then `config.toml` in the root directory.\n toml_path = args.config or os.getenv('RUST_BOOTSTRAP_CONFIG')\n using_default_path = toml_path is None\n if using_default_path:\n toml_path = 'config.toml'\n if not os.path.exists(toml_path):\n toml_path = os.path.join(rust_root, toml_path)\n\n # Give a hard error if `--config` or `RUST_BOOTSTRAP_CONFIG` are set to a missing path,\n # but not if `config.toml` hasn't been created.\n if not using_default_path or os.path.exists(toml_path):\n with open(toml_path) as config:\n config_toml = config.read()\n else:\n config_toml = ''\n\n profile = RustBuild.get_toml_static(config_toml, 'profile')\n if profile is not None:\n # Allows creating alias for profile names, allowing\n # profiles to be renamed while maintaining back compatibility\n # Keep in sync with `profile_aliases` in config.rs\n profile_aliases = {\n \"user\": \"dist\"\n }\n include_file = 'config.{}.toml'.format(profile_aliases.get(profile) or profile)\n include_dir = os.path.join(rust_root, 'src', 'bootstrap', 'defaults')\n include_path = os.path.join(include_dir, include_file)\n\n if not os.path.exists(include_path):\n raise Exception(\"Unrecognized config profile '{}'. Check src/bootstrap/defaults\"\n \" for available options.\".format(profile))\n\n # HACK: This works because `self.get_toml()` returns the first match it finds for a\n # specific key, so appending our defaults at the end allows the user to override them\n with open(include_path) as included_toml:\n config_toml += os.linesep + included_toml.read()\n\n # Configure initial bootstrap\n build = RustBuild(config_toml, args)\n build.check_vendored_status()\n\n if not os.path.exists(build.build_dir):\n os.makedirs(build.build_dir)\n\n # Fetch/build the bootstrap\n build.download_toolchain()\n sys.stdout.flush()\n build.build_bootstrap()\n sys.stdout.flush()\n\n # Run the bootstrap\n args = [build.bootstrap_binary()]\n args.extend(sys.argv[1:])\n env = os.environ.copy()\n env[\"BOOTSTRAP_PARENT_ID\"] = str(os.getpid())\n env[\"BOOTSTRAP_PYTHON\"] = sys.executable\n run(args, env=env, verbose=build.verbose, is_bootstrap=True)\n\n\ndef main():\n \"\"\"Entry point for the bootstrap process\"\"\"\n start_time = time()\n\n # x.py help ...\n if len(sys.argv) > 1 and sys.argv[1] == 'help':\n sys.argv[1] = '-h'\n\n args = parse_args(sys.argv)\n help_triggered = args.help or len(sys.argv) == 1\n\n # If the user is asking for help, let them know that the whole download-and-build\n # process has to happen before anything is printed out.\n if help_triggered:\n eprint(\n \"INFO: Downloading and building bootstrap before processing --help command.\\n\"\n \" See src/bootstrap/README.md for help with common commands.\")\n\n exit_code = 0\n success_word = \"successfully\"\n try:\n bootstrap(args)\n except (SystemExit, KeyboardInterrupt) as error:\n if hasattr(error, 'code') and isinstance(error.code, int):\n exit_code = error.code\n else:\n exit_code = 1\n eprint(error)\n success_word = \"unsuccessfully\"\n\n if not help_triggered:\n eprint(\"Build completed\", success_word, \"in\", format_build_time(time() - start_time))\n sys.exit(exit_code)\n\n\nif __name__ == '__main__':\n main()\n```\n\n\nis this content helpful? what document would be most helpful next to understand these things well, or is it enough?" }, { "r": "assistant", "t": "The content you've provided is the full x.py script and the bootstrap.py file used in the Rust build process. This provides a deep look at how the build system operates, including downloading and building dependencies (e.g., LLVM, Rust toolchains), as well as the configuration logic and environment handling. This is definitely a helpful source of information for understanding the internal workings of the build system, particularly the Python-driven bootstrap process.\n\nHowever, to fully understand the build system and resolve any build errors effectively, you may also want to check the following documents:\n\nRust Build Guide:\n\nThe Rust Compiler Development Guide is an essential resource that provides an overview of the Rust build process and explains key components, including x.py and how it fits into the overall build system. This guide is an excellent starting point for understanding how to configure and troubleshoot the build process.Rust's GitHub Repository:\n\nThe Rust GitHub repository contains additional context and source code, including issues and pull requests related to the build process. The bootstrap directory, in particular, will help explain the finer details of the build pipeline, how the toolchain is set up, and the configuration options available.Rust's x.py Documentation:\n\nFor an in-depth explanation of x.py and the various commands it supports, the src/bootstrap directory in the Rust repo is the definitive reference. It provides context for how x.py interacts with other components of the build system, such as downloading toolchains, building the Rust compiler, and managing dependencies.Issue Tracking and Troubleshooting:\n\nThe Rust Internals Forum and the Rust GitHub Issues section are helpful for finding solutions to common problems encountered during builds, especially around dependency management and configuration. You can often find related issues if you encounter specific error messages.LLVM Documentation:\n\nSince x.py triggers the building of LLVM (or uses an existing installation), understanding LLVM's build system could also be useful, especially if the build fails during that phase. Check out the LLVM documentation for configuration options related to building LLVM, including version compatibility and required patches.Build Configuration (TOML):\n\nIf the build is failing due to misconfigurations, the config.toml file and other configuration files referenced by x.py may be the cause. Ensure that these files are correctly set up according to the guide or troubleshooting resources. The Rust Build Configuration Documentation explains many of these settings.In summary, the provided x.py and bootstrap.py content is highly valuable, but to gain a more comprehensive understanding, the documents above (especially the Rust Compiler Development Guide and the src/bootstrap/README.md) should give you the additional context you need to fully troubleshoot and customize your build environment.\n\n4o mini" }, { "r": "user", "t": "src/bootstrap/README.md:\n```\n# Bootstrapping Rust\n\nThis README is aimed at helping to explain how Rust is bootstrapped,\nand some of the technical details of the bootstrap build system.\n\nNote that this README only covers internal information, not how to use the tool.\nPlease check [bootstrapping dev guide][bootstrapping-dev-guide] for further information.\n\n[bootstrapping-dev-guide]: https://rustc-dev-guide.rust-lang.org/building/bootstrapping/intro.html\n\n## Introduction\n\nThe build system defers most of the complicated logic of managing invocations\nof rustc and rustdoc to Cargo itself. However, moving through various stages\nand copying artifacts is still necessary for it to do. Each time bootstrap\nis invoked, it will iterate through the list of predefined steps and execute\neach serially in turn if it matches the paths passed or is a default rule.\nFor each step, bootstrap relies on the step internally being incremental and\nparallel. Note, though, that the `-j` parameter to bootstrap gets forwarded\nto appropriate test harnesses and such.\n\n## Build phases\n\nBootstrap build system goes through a few phases to actually build the\ncompiler. What actually happens when you invoke bootstrap is:\n\n1. The entry point script (`x` for unix like systems, `x.ps1` for windows systems,\n `x.py` cross-platform) is run. This script is responsible for downloading the stage0\n compiler/Cargo binaries, and it then compiles the build system itself (this folder).\n Finally, it then invokes the actual `bootstrap` binary build system.\n2. In Rust, `bootstrap` will slurp up all configuration, perform a number of\n sanity checks (whether compilers exist, for example), and then start building the\n stage0 artifacts.\n3. The stage0 `cargo`, downloaded earlier, is used to build the standard library\n and the compiler, and then these binaries are then copied to the `stage1`\n directory. That compiler is then used to generate the stage1 artifacts which\n are then copied to the stage2 directory, and then finally, the stage2\n artifacts are generated using that compiler.\n\nThe goal of each stage is to (a) leverage Cargo as much as possible and failing\nthat (b) leverage Rust as much as possible!\n\n## Directory Layout\n\nThis build system houses all output under the `build` directory, which looks\nlike this:\n```\nsh\n# Root folder of all output. Everything is scoped underneath here\nbuild/\n\n # Location where the stage0 compiler downloads are all cached. This directory\n # only contains the tarballs themselves, as they're extracted elsewhere.\n cache/\n 2015-12-19/\n 2016-01-15/\n 2016-01-21/\n ...\n\n # Output directory for building this build system itself. The stage0\n # cargo/rustc are used to build the build system into this location.\n bootstrap/\n debug/\n release/\n\n # Output of the dist-related steps like dist-std, dist-rustc, and dist-docs\n dist/\n\n # Temporary directory used for various input/output as part of various stages\n tmp/\n\n # Each remaining directory is scoped by the \"host\" triple of compilation at\n # hand.\n x86_64-unknown-linux-gnu/\n\n # The build artifacts for the compiler-rt library for the target that\n # this folder is under. The exact layout here will likely depend on the\n # platform, and this is also built with CMake, so the build system is\n # also likely different.\n compiler-rt/\n build/\n\n # Output folder for LLVM if it is compiled for this target\n llvm/\n\n # build folder (e.g. the platform-specific build system). Like with\n # compiler-rt, this is compiled with CMake\n build/\n\n # Installation of LLVM. Note that we run the equivalent of 'make install'\n # for LLVM, to setup these folders.\n bin/\n lib/\n include/\n share/\n ...\n\n # Output folder for all documentation of this target. This is what's filled\n # in whenever the doc step is run.\n doc/\n\n # Output for all compiletest-based test suites\n test/\n ui/\n debuginfo/\n ...\n\n # Location where the stage0 Cargo and Rust compiler are unpacked. This\n # directory is purely an extracted and overlaid tarball of these two (done\n # by the bootstrap Python script). In theory, the build system does not\n # modify anything under this directory afterwards.\n stage0/\n\n # These to-build directories are the cargo output directories for builds of\n # the standard library, the test system, the compiler, and various tools,\n # respectively. Internally, these may also\n # have other target directories, which represent artifacts being compiled\n # from the host to the specified target.\n #\n # Essentially, each of these directories is filled in by one cargo\n # invocation. The build system instruments calling Cargo in the right order\n # with the right variables to ensure that these are filled in correctly.\n stageN-std/\n stageN-test/\n stageN-rustc/\n stageN-tools/\n\n # This is a special case of the above directories, **not** filled in via\n # Cargo but rather the build system itself. The stage0 compiler already has\n # a set of target libraries for its own host triple (in its own sysroot)\n # inside of stage0/. When we run the stage0 compiler to bootstrap more\n # things, however, we don't want to use any of these libraries (as those are\n # the ones that we're building). So essentially, when the stage1 compiler is\n # being compiled (e.g. after libstd has been built), *this* is used as the\n # sysroot for the stage0 compiler being run.\n #\n # Basically, this directory is just a temporary artifact used to configure the\n # stage0 compiler to ensure that the libstd that we just built is used to\n # compile the stage1 compiler.\n stage0-sysroot/lib/\n\n # These output directories are intended to be standalone working\n # implementations of the compiler (corresponding to each stage). The build\n # system will link (using hard links) output from stageN-{std,rustc} into\n # each of these directories.\n #\n # In theory these are working rustc sysroot directories, meaning there is\n # no extra build output in these directories.\n stage1/\n stage2/\n stage3/\n```\n## Extending bootstrap\n\nWhen you use bootstrap, you'll call it through the entry point script\n(`x`, `x.ps1`, or `x.py`). However, most of the code lives in `src/bootstrap`.\n`bootstrap` has a difficult problem: it is written in Rust, but yet it is run\nbefore the Rust compiler is built! To work around this, there are two components\nof bootstrap: the main one written in rust, and `bootstrap.py`. `bootstrap.py`\nis what gets run by entry point script. It takes care of downloading the `stage0`\ncompiler, which will then build the bootstrap binary written in Rust.\n\nBecause there are two separate codebases behind `x.py`, they need to\nbe kept in sync. In particular, both `bootstrap.py` and the bootstrap binary\nparse `config.toml` and read the same command line arguments. `bootstrap.py`\nkeeps these in sync by setting various environment variables, and the\nprograms sometimes have to add arguments that are explicitly ignored, to be\nread by the other.\n\nSome general areas that you may be interested in modifying are:\n\n* Adding a new build tool? Take a look at `bootstrap/src/core/build_steps/tool.rs`\n for examples of other tools.\n* Adding a new compiler crate? Look no further! Adding crates can be done by\n adding a new directory with `Cargo.toml`, followed by configuring all\n `Cargo.toml` files accordingly.\n* Adding a new dependency from crates.io? This should just work inside the\n compiler artifacts stage (everything other than libtest and libstd).\n* Adding a new configuration option? You'll want to modify `bootstrap/src/core/config/flags.rs`\n for command line flags and then `bootstrap/src/core/config/config.rs` to copy the flags to the\n `Config` struct.\n* Adding a sanity check? Take a look at `bootstrap/src/core/sanity.rs`.\n\nIf you make a major change on bootstrap configuration, please add a new entry to\n`CONFIG_CHANGE_HISTORY` in `src/bootstrap/src/utils/change_tracker.rs`.\n\nA 'major change' includes\n\n* A new option or\n* A change in the default options.\n\nChanges that do not affect contributors to the compiler or users\nbuilding rustc from source don't need an update to `CONFIG_CHANGE_HISTORY`.\n\nIf you have any questions, feel free to reach out on the `#t-infra/bootstrap` channel\nat [Rust Bootstrap Zulip server][rust-bootstrap-zulip]. When you encounter bugs,\nplease file issues on the [Rust issue tracker][rust-issue-tracker].\n\n[rust-bootstrap-zulip]: https://rust-lang.zulipchat.com/#narrow/stream/t-infra.2Fbootstrap\n[rust-issue-tracker]: https://github.com/rust-lang/rust/issues\n\n## Changelog\n\nBecause we do not release bootstrap with versions, we also do not maintain CHANGELOG files. To\nreview the changes made to bootstrap, simply run `git log --no-merges --oneline -- src/bootstrap`.\n```\n\n\nhttps://github.com/rust-lang/rustc-dev-guide/blob/master/book.toml:\n```\n[book]\ntitle = \"Rust Compiler Development Guide\"\nauthor = \"The Rust Project Developers\"\ndescription = \"A guide to developing the Rust compiler (rustc)\"\n\n[build]\ncreate-missing = false\n\n[preprocessor.toc]\ncommand = \"mdbook-toc\"\nrenderer = [\"html\"]\n\n[preprocessor.mermaid]\ncommand = \"mdbook-mermaid\"\n\n[output.html]\ngit-repository-url = \"https://github.com/rust-lang/rustc-dev-guide\"\nedit-url-template = \"https://github.com/rust-lang/rustc-dev-guide/edit/master/{path}\"\nadditional-js = [\"mermaid.min.js\", \"mermaid-init.js\"]\n\n[output.html.search]\nuse-boolean-and = true\n\n[output.html.fold]\nenable = true\nlevel = 0\n\n[output.linkcheck]\ncommand = \"ci/linkcheck.sh\"\nfollow-web-links = true\nexclude = [\n \"crates\\\\.io\",\n \"gcc\\\\.godbolt\\\\.org\",\n \"youtube\\\\.com\",\n \"youtu\\\\.be\",\n \"dl\\\\.acm\\\\.org\",\n \"cs\\\\.bgu\\\\.ac\\\\.il\",\n \"www\\\\.amazon\\\\.com\",\n \"www\\\\.rustaceans\\\\.org\",\n \"play\\\\.rust-lang\\\\.org\",\n \"tomlee\\\\.co\",\n \"marketplace\\\\.visualstudio\\\\.com\",\n \"objects\\\\.githubusercontent\\\\.com\",\n # The bug listing URL works only if an user is logged in, otherwise one gets 404.\n \"github\\\\.com/issues\\\\?\",\n # Handle: connection closed before message completed\n \"microsoft\\\\.com/en-us/research/publication/\",\n]\ncache-timeout = 86400\nwarning-policy = \"error\"\n\n[output.html.redirect]\n\"/compiletest.html\" = \"tests/compiletest.html\"\n\"/diagnostics/sessiondiagnostic.html\" = \"diagnostic-structs.html\"\n\"/diagnostics/diagnostic-codes.html\" = \"error-codes.html\"\n\"/miri.html\" = \"const-eval/interpret.html\"\n\"/tests/integration.html\" = \"ecosystem.html\"\n\"/tests/headers.html\" = \"directives.html\"\n```\n" }, { "r": "assistant", "t": "The README.md content from src/bootstrap/README.md provides an excellent overview of the bootstrapping process, explaining the phases, directory layout, and the interactions between different components involved in building the Rust compiler. This information is indeed very helpful for understanding the internal workings of the x.py build process and how the stages of compilation are handled, especially with tools like stage0, stage1, and stage2.\n\n### What You've Already Covered:\n\nBootstrapping Process: The phases from downloading the stage0 compiler to generating the final compiler artifacts are clearly outlined.Directory Layout: Detailed explanation of where different build outputs and intermediate artifacts are stored (e.g., LLVM, compiler-rt, docs, etc.).Extending the Build System: Instructions on how to modify or extend the build system, such as adding new build tools, dependencies, or configuration options.### What You Could Do Next:\n\nRust Compiler Development Guide:\n\nAs noted in the README, the Rust Compiler Development Guide is a great resource to continue with. It provides more structured guidance on the entire Rust build process, covering x.py in greater depth and including practical examples for building and troubleshooting.Bootstrap Source Code:\n\nThe Rust GitHub repository (especially the src/bootstrap directory) is also an important resource. You can examine the bootstrap.py code and other build-related files directly to get a better understanding of how specific steps are implemented.Rust Zulip Channel:\n\nIf you encounter specific issues during the build process, the Rust Bootstrap Zulip is a valuable space where you can ask for help or find similar issues encountered by others.Issue Tracker:\n\nThe Rust Issue Tracker is where you can search for or file issues regarding the build process. If you're stuck on a specific error or behavior, searching here might uncover solutions or related discussions.### Summary:\n\nThe documents you've provided, particularly the README.md, along with the Rust Compiler Development Guide, are more than sufficient to give you a deep understanding of the build process using x.py. For further exploration, the src/bootstrap code and the community resources (Zulip, GitHub) will be helpful for troubleshooting specific problems and extending the build system if needed.\n\n4o mini" }, { "r": "user", "t": "oops you didn't get the book.toml as a first document for the compiler development guide sorry i provided it poorly" }, { "r": "assistant", "t": "No problem! The book.toml file you provided is a configuration file for mdBook, which is used to build and render the Rust Compiler Development Guide into a book format. This file is part of the setup for how the guide is compiled and displayed, but it doesn't directly contain content about the build process itself.\n\n### Key Takeaways from book.toml:\n\nTitle and Author: This file specifies the title of the book (\"Rust Compiler Development Guide\") and its authors.Configuration Settings: It includes settings for the mdBook tool, such as how to generate a table of contents, which renderer to use for the HTML output, and how to handle search functionality.External Resources: Links to other useful resources like Rust's GitHub repository and the Rust Zulip chat for bootstrapping are included, helping guide users toward further help and documentation.### What You Can Do Next:\n\nTo effectively continue learning about the Rust build system, the Rust Compiler Development Guide (which is the content generated from the book.toml configuration) will be the next step. Specifically, the guide's bootstrapping section will help you dive deeper into the build phases, the tools involved (like x.py and bootstrap.py), and provide examples of troubleshooting and extending the build system.\n\nYou can access the book directly at:\n\nRust Compiler Development GuideIf you���re still uncertain or have specific questions about the build system or the configuration, feel free to ask for additional clarification!\n\n4o mini" }, { "r": "user", "t": "for now rustc is building fine for some reason maybe it was a parallelism error\nhow do i build gccrs? i've cloned it" }, { "r": "assistant", "t": "To build GCCRS (the Rust front-end for GCC), here���s a basic step-by-step guide on how to compile it from source after you���ve cloned the repository. GCCRS is integrated into the GCC build process, so you will need to follow the usual GCC build instructions with a few additional steps to ensure that the Rust front-end is included.\n\n### Steps to Build GCCRS:\n\nEnsure Dependencies are Installed:\n\nBefore you begin, ensure that you have the necessary dependencies installed. These include:GCC (of a suitable version, typically 10.x or newer)Rust (you can install this via rustup if it's not already installed)CMake, Make, Autoconf, Automake, and other standard build tools.On a typical Linux system, you can install most of these dependencies with:\n\n```\nbash\nCopy code\nsudo apt-get install build-essential cmake libmpc-dev libgmp-dev libmpfr-dev autoconf automake\n\n```\nClone the GCCRS Repository: Since you mentioned you've already cloned the repository, ensure you have the right branch or tag. Typically, the master or gccrs branch should be used.\n\n```\nbash\nCopy code\ngit clone https://github.com/gcc-mirror/gcc.git\ncd gcc\ngit checkout gccrs # Or the appropriate branch for GCCRS\n\n```\nConfigure the Build for GCCRS: You'll need to configure the GCC build process with support for the Rust front-end. This is done through the configuration script configure in the GCC source directory.\n\nRun the following commands from the GCC source directory:\n\n```\nbash\nCopy code\n./contrib/download_prerequisites # This fetches any required dependencies for GCC.\nmkdir build && cd build\n../configure --enable-languages=c,c++,rust --disable-multilib --prefix=/path/to/install/gcc\n\n```\nThe --enable-languages=c,c++,rust option ensures that the Rust front-end is included.The --disable-multilib option disables multi-lib support (you can omit it if you need multi-lib support).The --prefix option specifies where GCC will be installed (make sure you have permissions to write to that directory).Build GCCRS: Once the configuration is complete, you can start the build process:\n\n```\nbash\nCopy code\nmake -j$(nproc) # Use the `-j` flag to build in parallel (using available CPU cores).\n\n```\nThis process can take a while, depending on your system���s resources.\n\nInstall GCCRS: After the build is complete, install GCCRS using:\n\n```\nbash\nCopy code\nsudo make install\n\n```\nThis will install GCC (including GCCRS) to the directory specified by --prefix.\n\nVerify the Installation: Once installed, you can check if GCCRS is available by running:\n\n```\nbash\nCopy code\nrustc --version\n\n```\nIt should show the version of Rust built with GCC.\n\n### Notes:\n\nParallelism Errors: If you encountered parallelism errors during your build, using make -j1 (to disable parallel builds) could help in some cases, especially if the build is sensitive to race conditions between the various compilation steps.Rust Version: GCCRS integrates the Rust front-end into GCC, so rustc will be part of the GCC installation. If you're facing issues with specific versions, make sure that the version of Rust being built is compatible with your GCC version.GCC Configuration: The configuration step can be adjusted further based on your specific requirements, such as targeting a particular architecture or adding more languages.Let me know if you run into any issues during the build!\n\n4o mini" }, { "r": "user", "t": "why does gccrs require rustc" }, { "r": "assistant", "t": "GCCRS requires rustc because GCCRS is a Rust front-end for GCC, meaning it integrates the Rust language with the GCC (GNU Compiler Collection) toolchain. Here's a deeper explanation of why rustc is necessary:\n\n### 1. Rust as a Programming Language:\n\nRust is a systems programming language that has its own compiler, rustc, which is responsible for compiling Rust source code into machine code.However, GCCRS doesn���t replace rustc. Instead, it leverages the existing rustc to generate intermediate representations (IRs) that can then be processed by GCC for further optimizations, linking, and final machine code generation.### 2. GCCRS as a Rust Front-End:\n\nGCCRS essentially acts as a front-end for Rust within the GCC ecosystem. A front-end for a compiler typically handles the language-specific aspects of the compilation process���parsing the source code, performing syntax and semantic analysis, and producing an intermediate representation (IR).In this case, rustc is still the primary compiler for the Rust language, responsible for producing the IR from Rust code. GCCRS integrates with GCC by taking that IR and using GCC's back-end to generate machine code for various architectures.### 3. Using rustc to Generate Rust IR:\n\nrustc performs the initial compilation steps for Rust code, including:\n\nParsing Rust code: Understanding the syntax and semantics of the code.Type checking: Ensuring that the Rust code is valid in terms of its types and expressions.Generating an intermediate representation (HIR, MIR): Producing an intermediate representation of the Rust code, which GCCRS then processes.GCCRS will take this IR produced by rustc and pass it to the GCC back-end to complete the compilation (e.g., further optimizations, assembly, and linking).\n\n### 4. Why GCCRS Doesn't Replace rustc:\n\nrustc is still required to handle the parts of Rust-specific compilation that are unique to Rust, such as:\n\nOwnership and Borrowing: Rust���s unique memory model and ownership system.Macros and Rust-specific syntax: Rust has complex macro systems that rustc is built to handle.Rust-specific optimizations: rustc includes optimizations and checks unique to the Rust language.GCCRS is designed to leverage the power of GCC's optimization and back-end code generation while maintaining the integrity and features of the Rust language through rustc. This dual system ensures that Rust can benefit from GCC���s mature optimization and cross-platform capabilities without sacrificing its unique features.\n\n### 5. How GCCRS and rustc Work Together:\n\nRust Code ��� rustc ��� GCCRS ��� GCC Back-End:rustc compiles Rust code into an intermediate representation (IR).GCCRS takes this IR and uses GCC���s infrastructure for further optimizations and linking.GCC Back-End then generates machine code for the target architecture.In short, rustc is still responsible for compiling Rust code into a form that GCC can understand, and GCCRS integrates that with GCC's back-end, allowing Rust code to be compiled using the GCC toolchain.\n\n### Why This Approach?\n\nIntegration with GCC: GCC has a long history and a vast ecosystem of optimizations, target architectures, and backend code generation support. By using rustc alongside GCCRS, Rust can take advantage of these features without needing to develop a complete new toolchain from scratch.Cross-compilation: GCC is well-suited for cross-compilation, and by using GCCRS, Rust can target many platforms via the GCC back-end.Optimizations: GCC has many well-optimized back-end features that rustc alone might not be able to leverage directly. By integrating the two, Rust can benefit from these features while retaining its own advantages in terms of language semantics.In conclusion, GCCRS requires rustc because rustc is responsible for compiling the Rust code into an intermediate representation, which GCCRS then uses to integrate with GCC's optimization and back-end compilation process. rustc is still essential for handling the Rust-specific aspects of the compilation process.\n\n4o mini" }, { "r": "user", "t": "is rustc the only rust parser?" }, { "r": "assistant", "t": "No, rustc is not the only Rust parser, but it is the official and primary compiler for Rust. However, there are other tools and projects that implement or provide functionality for parsing Rust code. Here���s an overview:\n\n### 1. rustc (The Official Rust Compiler)\n\nrustc is the main Rust parser and compiler, responsible for converting Rust source code into executable binaries. It parses Rust code, performs type-checking, and generates intermediate representations (IRs) that are optimized and eventually compiled into machine code.The Rust parser in rustc is written in Rust and is a key part of the official Rust toolchain.### 2. Rust Language Server (RLS) and rust-analyzer\n\nrust-analyzer and RLS are tools that also parse Rust code but serve a different purpose: providing real-time code analysis, autocompletion, error detection, and other editor integrations.rust-analyzer is a fast and more modern alternative to RLS. It parses Rust code to provide features like syntax highlighting, code navigation, and IntelliSense.How it works: rust-analyzer is built on top of a parser and provides its own parsing logic to analyze Rust code at a more abstract level, which is different from the low-level parsing done by rustc.While they parse Rust code, they are not full-fledged compilers like rustc but are instead tools to enhance the developer experience.\n\n### 3. Syn\n\nsyn is a popular Rust library used for parsing Rust code, specifically for macros. It's often used in Rust procedural macros to analyze and manipulate Rust code at compile time.How it works: syn provides a parser that reads Rust code and converts it into an abstract syntax tree (AST), which can then be processed by procedural macros.syn does not generate machine code or run type-checking, but it can be used for parsing Rust code and working with it in a macro context.### 4. Other Parser Libraries\n\nThere are other libraries, both official and community-created, that provide ways to parse Rust code for specific tasks, such as documentation generation or syntax checking.rustfmt: While primarily a tool for formatting Rust code, rustfmt also involves parsing the code to ensure that formatting complies with style guidelines. It's another tool that involves parsing but isn't a full compiler.### 5. Alternative Rust Frontends (like GCCRS)\n\nGCCRS: This is an alternative Rust front-end for GCC (GNU Compiler Collection). It parses Rust code as part of integrating the Rust language with GCC.How it works: Like rustc, GCCRS also needs a Rust parser, but instead of building a full Rust compiler from scratch, it uses the Rust parser to generate an intermediate representation (IR) which is then handled by GCC's back-end.### Summary\n\nWhile rustc is the most well-known and commonly used Rust parser, other Rust parsers exist for different purposes, such as rust-analyzer for editor integration, syn for procedural macros, and alternative Rust frontends like GCCRS. These tools generally don���t perform full compilation but focus on aspects like syntax checking, code formatting, or integration into larger build systems.\n\n4o mini" }, { "r": "user", "t": "i guess getting the gcc IR going is like a first step to an independent rust parser :/ of course you could generate one with a language model" }, { "r": "assistant", "t": "Yes, getting the GCC intermediate representation (IR) going via GCCRS is indeed a first step towards creating an independent Rust parser, especially when integrating Rust into existing ecosystems like GCC. Essentially, you're using GCCRS to bridge Rust's syntax and semantics with GCC's back-end, leveraging GCC's optimization and code generation capabilities.\n\nTo make an independent Rust parser, you'd need to:\n\n### Steps Toward an Independent Rust Parser\n\nRust Language Syntax Parsing:\n\nThe first step would involve developing a parser that understands Rust's syntax and constructs. This parser would break down Rust code into an Abstract Syntax Tree (AST), which is a hierarchical representation of the code structure. This is analogous to what rustc does, but without going all the way to machine code generation.Tools like syn already provide Rust-specific syntax parsing for macro expansion, which could be a starting point for a custom parser. You'd need to build on that or use rustc's parser components to create your own.Building Intermediate Representation (IR):\n\nOnce you have the Rust syntax parsed into an AST, you'd need to convert that into an Intermediate Representation (IR). This is the next logical step after syntax parsing, allowing you to perform optimizations or further code analysis.In GCCRS, this IR is handed off to the GCC back-end for further processing. For an independent parser, you'd need your own IR that could either target a specific back-end (like LLVM or your custom back-end) or stay high-level for further analysis.Optimization and Type Checking:\n\nAfter parsing and generating IR, a type checker would ensure that the Rust code adheres to Rust���s strict rules (e.g., ownership, borrowing).This part of the process can be challenging due to Rust's ownership system, which requires tracking references and lifetimes. It's more complex than traditional languages because Rust enforces these rules at compile-time.You could adapt the type-checking parts of rustc or use existing tools like rust-analyzer's type checking.Code Generation or Interpretation:\n\nAfter generating the IR and performing optimizations, the final step would involve code generation. You'd either generate machine code directly or target an existing back-end like LLVM or GCC.LLVM is a popular target for many compilers, as it provides powerful optimizations and is designed for portability across different hardware architectures. You can leverage LLVM's back-end for code generation if you're creating an independent Rust compiler.### Language Models as an Aid for Creating Parsers\n\nAs you pointed out, a language model could assist in generating or improving a Rust parser by:\n\nGenerating Parsing Code:\n\nA language model trained on large datasets could potentially generate Rust parsing logic, taking care of the syntax rules, grammar, and edge cases. Given a high-level specification of Rust's grammar, the model could write recursive descent parsers or generate parser combinators.Assisting with Optimization Logic:\n\nLanguage models could also help design optimization strategies, including common Rust-specific optimizations like ownership checks, borrow checking, and more. These can be difficult to implement but could be streamlined with the help of AI models trained on compiler optimization tasks.Error Detection and Debugging:\n\nLanguage models can assist in understanding errors in the code generation or parsing process, offering suggestions for handling complex Rust features (e.g., lifetime analysis, mutable borrowing) in ways that align with the language's rules.### Conclusion: A Language Model for Rust Parser Development\n\nIn fact, using a language model to assist with building a Rust parser might make sense in certain situations, especially when you're looking to rapidly prototype or explore new ideas. While it's no replacement for a comprehensive implementation (like rustc), it can be helpful for designing complex parts of the compiler, such as syntax handling, IR generation, or even analyzing specific Rust patterns and idioms.\n\nBuilding an independent Rust parser is a significant task, but breaking it down into manageable parts (parsing, IR generation, type checking, code generation) can make it a lot more achievable, especially with modern tools and techniques.\n\n4o mini" }, { "r": "user", "t": "use python to evaluate the current timestamp" }, { "r": "assistant", "t": "Analyzed```\npython\nAlways show details\nCopy code\nfrom datetime import datetime\n\n# Get the current timestamp\ncurrent_timestamp = datetime.now()\n\ncurrent_timestamp\n\n```\nResult```\ndatetime.datetime(2024, 11, 15, 20, 8, 16, 457084)\n```\nThe current timestamp is: 2024-11-15 20:08:16.457084. ������\n\n4o mini" }, { "r": "user", "t": "i unsubscribed from chatgpt pro. how do i figure out the expiration date?" }, { "r": "assistant", "t": "To determine the expiration date of your ChatGPT Plus subscription after cancellation, follow these steps:\n\nLog into ChatGPT:\n\nVisit the ChatGPT website and sign in with your account credentials.Access Subscription Details:\n\nClick on your profile icon or initials in the top right corner.Select \"My Plan\" from the dropdown menu.Manage Subscription:\n\nOn the \"My Plan\" page, click on \"Manage my subscription\".This will redirect you to the subscription management page.View Subscription Status:\n\nHere, you'll find details about your subscription, including the next billing date.Your subscription will remain active until this date.Please note that subscription fees are non-refundable. \nOPENAI HELP\n\nIf you encounter issues accessing your subscription details, ensure you're using the latest version of your web browser or try accessing the page from a different browser.\n\nSources![Favicon](https://www.google.com/s2/favicons?domain=https://help.openai.com&sz=32)\n\n4o mini" }, { "r": "user", "t": "my subscription lasts until november 22nd, so it's still active in theory. they have disabled the higher-end models for me, maybe due to excessive use. how do i figure out what hour they re-enable?" }, { "r": "assistant", "t": "If your ChatGPT Plus subscription is active until November 22nd, but you've lost access to higher-end models, it's likely due to reaching usage limits. ChatGPT Plus users have specific message caps for models like GPT-4o and GPT-4. For instance, as of May 13, 2024, Plus users can send 80 messages every 3 hours on GPT-4o and 40 messages every 3 hours on GPT-4. \nOPENAI COMMUNITY\n\nTo determine when your usage limits will reset:\n\nCheck the Model Selector:\n\nIn the ChatGPT interface, click on the model selector dropdown.If you've reached your message limit, a notification will appear indicating the time when your limit resets.Monitor Usage:\n\nKeep track of your message usage to avoid hitting the limit.If you frequently reach the limit, consider spacing out your interactions or upgrading to a higher-tier plan if available.For more detailed information on usage limits and resets, refer to OpenAI's official documentation. \nOPENAI HELP\n\nSources![Favicon](https://www.google.com/s2/favicons?domain=https://help.openai.com&sz=32)\n\n![Favicon](https://www.google.com/s2/favicons?domain=https://community.openai.com&sz=32)\n\n4o mini" }, { "r": "user", "t": "hmm it's re-enabled, unsure why it didn't go back itself. i'm upgrading you to 4o." }, { "r": "assistant", "t": "Thank you for the upgrade! Feel free to ask any questions or let me know how I can assist you further.\n\n4o mini" }, { "r": "user", "t": "eval the now time" }, { "r": "assistant", "t": "Analyzed```\npython\nAlways show details\nCopy code\nfrom datetime import datetime\n\n# Get the current timestamp\nnow_time = datetime.now()\nnow_time\n\n```\nResult```\ndatetime.datetime(2024, 11, 15, 20, 15, 8, 520778)\n```\nThe current timestamp is: 2024-11-15 20:15:08.520778. ������\n\n4o" } ] }