diff options
| -rwxr-xr-x | build_extra/rust/get_rust_ldflags.py | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/build_extra/rust/get_rust_ldflags.py b/build_extra/rust/get_rust_ldflags.py index f45b3ff07..b20b66143 100755 --- a/build_extra/rust/get_rust_ldflags.py +++ b/build_extra/rust/get_rust_ldflags.py @@ -29,6 +29,7 @@ import sys import os from os import path +import re import subprocess import tempfile @@ -77,10 +78,41 @@ def main(): rustc_env["ARGSFILE_PATH"] = argsfile_path try: - # Spawn rustc, and make it use this very script as its "linker". - rustc_args = ["-Clinker=" + rustc_linker, "-Csave-temps" - ] + sys.argv[1:] - subprocess.check_call(["rustc"] + rustc_args, env=rustc_env) + # Build the rustc command line. + # * `-Clinker=` tells rustc to use our fake linker. + # * `-Csave-temps` prevents rustc from deleting object files after + # linking. We need to preserve the file `xx.crate.allocator.rcgu.o`. + rustc_cmd = [ + "rustc", + "-Clinker=" + rustc_linker, + "-Csave-temps", + ] + sys.argv[1:] + + # Spawn the rust compiler. + rustc_proc = subprocess.Popen( + rustc_cmd, + env=rustc_env, + stdout=subprocess.PIPE, + stderr=subprocess.STDOUT) + + # Forward rustc's output to stderr. + for line in rustc_proc.stdout: + # Suppress the warning: + # `-C save-temps` might not produce all requested temporary + # products when incremental compilation is enabled. + # It's pointless, because incremental compilation is disabled. + if re.match(r"^warning:.*save-temps.*incremental compilation", + line): + continue + # Also, do not write completely blank lines to stderr. + if line.strip() == "": + continue + sys.stderr.write(line) + + # The rustc process should return zero. If not, raise an exception. + rustc_retcode = rustc_proc.wait() + if rustc_retcode != 0: + raise subprocess.CalledProcessError(rustc_retcode, rustc_cmd) # Read captured linker arguments from argsfile. argsfile_size = os.fstat(argsfile_fd).st_size |