add debug message for skipped toolchain resolution

RELNOTES: added additional debug message to warn of skipped toolchains during resolution PiperOrigin-RevId: 475900663 Change-Id: I6e5c79838c27c9ff416135c3d8afdb79e15c8f9a
bazelbuild · Sep 21, 2022 · 4e7d2a2 · 4e7d2a2
1 parent e3e5445
commit 4e7d2a2
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/SingleToolchainResolutionFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/SingleToolchainResolutionFunction.java
@@ -181,6 +181,14 @@ private static SingleToolchainResolutionValue resolveConstraints(
       for (ConfiguredTargetKey executionPlatformKey : availableExecutionPlatformKeys) {
         // Only check the toolchains if this is a new platform.
         if (platformKeysSeen.contains(executionPlatformKey)) {
+          debugMessage(
+              eventHandler,
+              "    Type %s: target platform %s: execution platform %s: Skipping toolchain %s;"
+                  + " execution platform already has selected toolchain",
+              toolchainType.toolchainType(),
+              targetPlatform.label(),
+              executionPlatformKey.getLabel(),
+              toolchain.toolchainLabel());
           continue;
         }