From 8909c4dc315bf1686449e762958558893c420923 Mon Sep 17 00:00:00 2001 From: Joshua Nelson Date: Tue, 8 Dec 2020 19:18:06 -0500 Subject: [PATCH] Fix rustup support in default_build_triple for python3 bootstrap completely ignores all errors when detecting a rustup version, so this wasn't noticed before. Fixes the following error: ``` rustup not detected: a bytes-like object is required, not 'str' falling back to auto-detect ``` This also takes the opportunity to only call rustup and other external commands only once during startup. --- src/bootstrap/bootstrap.py | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py index a819e1b6e2f1e..f919f63e579d4 100644 --- a/src/bootstrap/bootstrap.py +++ b/src/bootstrap/bootstrap.py @@ -192,8 +192,10 @@ def default_build_triple(verbose): # If the user already has a host build triple with an existing `rustc` # install, use their preference. This fixes most issues with Windows builds # being detected as GNU instead of MSVC. + default_encoding = sys.getdefaultencoding() try: version = subprocess.check_output(["rustc", "--version", "--verbose"]) + version = version.decode(default_encoding) host = next(x for x in version.split('\n') if x.startswith("host: ")) triple = host.split("host: ")[1] if verbose: @@ -204,7 +206,6 @@ def default_build_triple(verbose): print("rustup not detected: {}".format(e)) print("falling back to auto-detect") - default_encoding = sys.getdefaultencoding() required = sys.platform != 'win32' ostype = require(["uname", "-s"], exit=required) cputype = require(['uname', '-m'], exit=required) @@ -794,7 +795,7 @@ def build_bootstrap(self): env.setdefault("RUSTFLAGS", "") env["RUSTFLAGS"] += " -Cdebuginfo=2" - build_section = "target.{}".format(self.build_triple()) + build_section = "target.{}".format(self.build) target_features = [] if self.get_toml("crt-static", build_section) == "true": target_features += ["+crt-static"] @@ -825,7 +826,11 @@ def build_bootstrap(self): run(args, env=env, verbose=self.verbose) def build_triple(self): - """Build triple as in LLVM""" + """Build triple as in LLVM + + Note that `default_build_triple` is moderately expensive, + so use `self.build` where possible. + """ config = self.get_toml('build') if config: return config