Upgrade bazel to 4.0.0rc2
A few things of note here:
- I disabled a few incompatible flags in order to minimize the number
of changes we have to deal with.
- I had to upgrade the typescript rules because the old ones didn't
work with new bazel anymore. That brought a typescript compiler
upgrade along. This in turn required me to turn off strict mode.
Otherwise, there are a _ton_ of errors in our typescript files. The
vast majority of them are related to `null` checking.
- The `default_python_version` attribute on Python rules doesn't exist
anymore. It's now replaced by `python_version`.
- I removed the CROSSTOOL in favour of a Starlark-equivalent
configuration function. See `tools/cpp/toolchain_config.bzl` for
more details. This new file is auto-generated using the migration
tools from `rules_cc`. I have made no attempt to beautify this file.
Relatedly, all CROSSTOOL-related files/functionality are gone as well.
- The `config_setting` targets to detect the compiler names had to
change. This is perhaps not surprising. Thanks to Austin for
pointing this out to me.
- The `cc_toolchain` targets all required `ar_files` and `as_files`
attributes where they didn't before. Not really sure what changed,
but the compilations appears to work with these changes.
Change-Id: I2317e5160fa3f8d87f94106b0c3b328918d0c42c
diff --git a/tools/bazel b/tools/bazel
index b4293a1..36e88ae 100755
--- a/tools/bazel
+++ b/tools/bazel
@@ -24,7 +24,7 @@
exec "${BAZEL_OVERRIDE}" "$@"
fi
-readonly VERSION="0.19.0rc4-201810201638+ac88041"
+readonly VERSION="4.0.0rc2-202011211956+37a429ad12"
readonly DOWNLOAD_DIR="${HOME}/.cache/bazel"
# Directory to unpack bazel into. This must change whenever bazel changes.