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| -rw-r--r-- | site/docs/skylark/rules.md | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/site/docs/skylark/rules.md b/site/docs/skylark/rules.md index 7937939742..b3204fa4af 100644 --- a/site/docs/skylark/rules.md +++ b/site/docs/skylark/rules.md @@ -201,6 +201,23 @@ executed. It is an error if there is a cycle in the dependency graph. Creating an action does not guarantee that it will be executed: It depends on whether its outputs are needed for the build. +Configurations +-------------- + +By default, a target is built in the target configuration. For each label +attribute, you can decide whether the dependency should be built in the same +configuration, or in the host configuration. + +In general, sources, dependent libraries and executables that will be needed at +runtime can use the same configuration. + +Tools that are executed as part of the build (e.g. compilers, code generators) +should be built for the host configuration. In this case, specify `cfg=HOST_CFG` +in the attribute. + +`DATA_CFG` is present for legacy reasons and should be used for the `data` +attributes. + Providers --------- |