bazel: Generate compile commands for Fuchsia

For now, this just includes some targets that are only buildable in
Bazel and therefore can't have compile commands generated by GN.

Fixes: 368654273
Change-Id: Ic8585f44b9caabf0c7b247fcaa9f4f3ced2dec14
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/237133
Commit-Queue: Ben Lawson <[email protected]>
Docs-Not-Needed: Ben Lawson <[email protected]>
Commit-Queue: Chad Norvell <[email protected]>
Lint: Lint 🤖 <[email protected]>
Reviewed-by: Ben Lawson <[email protected]>

BUILD.bazel

@@ -12,6 +12,7 @@
 # License for the specific language governing permissions and limitations under
 # the License.
 load("@bazel_skylib//rules:copy_file.bzl", "copy_file")
+load("@hedron_compile_commands//:refresh_compile_commands.bzl", "refresh_compile_commands")
 
 licenses(["notice"])
 
@@ -36,3 +37,23 @@ copy_file(
     out = "clangd",
     allow_symlink = True,
 )
+
+# The Fuchsia SDK is only supported on Linux hosts, so the target that
+# generates compile commands for targets built for Fuchsia is separate from
+# the more general-purpose `refresh_compile_commands` target.
+refresh_compile_commands(
+    name = "refresh_compile_commands_for_fuchsia_sdk",
+    out_dir = ".compile_commands",
+    target_compatible_with = select({
+        "@platforms//os:linux": [],
+        "//conditions:default": ["@platforms//:incompatible"],
+    }),
+    target_groups = {
+        "fuchsia": [
+            [
+                "//pw_bluetooth_sapphire/fuchsia/bt_host:pkg.arm64",
+                "--config=fuchsia",
+            ],
+        ],
+    },
+)