Switch everything to platforms
This patch switches the codebase over from using the "cpu"
mechanism to using bazel platforms. See
https://docs.bazel.build/versions/master/platforms.html for some more
information.
Most of the substantial changes are in //tools. Instead of using
`cc_toolchain_suite` rules, we now use regular `toolchain` rules that
are registered in the WORKSPACE. That also means that bazel now uses
the target platform to select the compiler.
All --cpu=* arguments should now be --config=* arguments. For example,
`--cpu=roborio` should now be `--config=roborio`. The CI script and
all documentation has been updated to reflect that.
The remainder of the changes revolve around tagging all targets with
`target_compatible_with`. The old mechanism allowed us to specify
repo-wide defaults. The new mechanism does not. That means every
target that didn't have any compatibility specified, now requires
compatibility with `@platforms//os:linux`.
I used buildozer for the vast majority of `target_compatible_with`
changes. buildozer automatically buildifies any BUILD files it
touches. That means this patch also contains a few non-functional
changes that I was too lazy to remove.
Change-Id: I66d6e6ad9161520ee397597cdb492585820a3acd
diff --git a/tools/ci/run-tests.sh b/tools/ci/run-tests.sh
index fd92ea3..ef4cff8 100755
--- a/tools/ci/run-tests.sh
+++ b/tools/ci/run-tests.sh
@@ -16,21 +16,21 @@
# bugs with Eigen.
tools/bazel --output_base=../k8_output_base test \
${COMMON} \
- --cpu=k8 \
+ --config=k8 \
--config=eigen \
${TARGETS}
tools/bazel --output_base=../roborio_output_base build \
${COMMON} \
- --cpu=roborio \
+ --config=roborio \
${TARGETS}
tools/bazel --output_base=../armhf-debian_output_base build \
${COMMON} \
- --cpu=armhf-debian \
+ --config=armhf-debian \
${TARGETS}
tools/bazel --output_base=../cortex-m4f_output_base build \
${COMMON} \
- --cpu=cortex-m4f \
+ --config=cortex-m4f \
${M4F_TARGETS}