Builds are broken

[ghost]

It appears that using these toolchains is now broken, the issue seems to be related to bazelbuild/bazel#6665

Essentially, when I try to build almost anything, I get the following error:

$ bazel build //basically:anything
ERROR: /home/user/.cache/bazel/_bazel_user/b66616ba40524aac761ec07c06bbfdfc/external/local_config_cc/BUILD:57:1: in cc_toolchain rule @local_config_cc//:cc-compiler-k8: Error while selecting cc_toolchain: Toolchain identifier 'local' was not found, valid identifiers are [clang-linux, clang-darwin]
ERROR: Analysis of target '//core/external/ros2:ros2' failed; build aborted: Analysis of target '@local_config_cc//:cc-compiler-k8' failed; build aborted
INFO: Elapsed time: 0.111s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (0 packages loaded, 0 targets configured)

See also bazelbuild/bazel-toolchains#236

[siddharthab]

Should be fixed by 98d700d.

The proper fix in bazel is bazelbuild/bazel@683c302.

[ghost]

Thanks for the fix. Unfortunately, this now doesn't work with bazel 0.19.0. To get it working I had to reintroduce

default_toolchain {
  cpu: "k8",
  toolchain_identifier: "clang-linux"
}

to the CROSSTOOL.tpl file