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/build_rules/select.bzl b/tools/build_rules/select.bzl
index 1c48eb7..23addf5 100644
--- a/tools/build_rules/select.bzl
+++ b/tools/build_rules/select.bzl
@@ -46,7 +46,8 @@
"@//tools:cpu_roborio": values["roborio"],
"@//tools:cpu_armhf": values["armhf"],
"@//tools:cpu_cortex_m4f": values["cortex-m"],
- "@//tools:cpu_cortex_m4f_k22": values["cortex-m"],
+ # TODO(phil): Support this properly.
+ #"@//tools:cpu_cortex_m4f_k22": values["cortex-m"],
})
"""A select wrapper for address space sizes.
@@ -66,7 +67,8 @@
"@//tools:cpu_roborio": values["32"],
"@//tools:cpu_armhf": values["32"],
"@//tools:cpu_cortex_m4f": values["32"],
- "@//tools:cpu_cortex_m4f_k22": values["32"],
+ # TODO(phil): Support this properly.
+ #"@//tools:cpu_cortex_m4f_k22": values["32"],
})
"""A select wrapper for compilers.