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Update MinGW comments in ci.yml

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This commit is contained in:
Mateusz Mikuła 2020-08-11 16:31:32 +02:00
parent d495ef527c
commit 24177319ca
1 changed files with 7 additions and 5 deletions
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12
src/ci/github-actions/ci.yml
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@ -490,15 +490,17 @@ jobs:
# 32/64-bit MinGW builds.
#
# We are using MinGW with posix threads since LLVM does not compile with
# the win32 threads version due to missing support for C++'s std::thread.
# We are using MinGW with POSIX threads since LLVM requires
# C++'s std::thread which is disabled in libstdc++ with win32 threads.
# FIXME: Libc++ doesn't have this limitation so we can avoid
# winpthreads if we switch to it.
#
# Instead of relying on the MinGW version installed on appveryor we download
# and install one ourselves so we won't be surprised by changes to appveyor's
# Instead of relying on the MinGW version installed on CI we download
# and install one ourselves so we won't be surprised by changes to CI's
# build image.
#
# Finally, note that the downloads below are all in the `rust-lang-ci` S3
# bucket, but they cleraly didn't originate there! The downloads originally
# bucket, but they clearly didn't originate there! The downloads originally
# came from the mingw-w64 SourceForge download site. Unfortunately
# SourceForge is notoriously flaky, so we mirror it on our own infrastructure.