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Diffstat (limited to 'doc/concepts/built-in-rules.md')
| -rw-r--r-- | doc/concepts/built-in-rules.md | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/doc/concepts/built-in-rules.md b/doc/concepts/built-in-rules.md index 5591c174..fc644a03 100644 --- a/doc/concepts/built-in-rules.md +++ b/doc/concepts/built-in-rules.md @@ -91,20 +91,23 @@ precedence to the artifacts over the runfiles; conflicts within artifacts or runfiles are resolved in a latest-wins fashion using the order of the targets in the evaluated `"deps"` argument. -The fields `"cmds"`, `"out_dirs"`, `"outs"`, and `"env"` are evaluated -fields where `"cmds"`, `"out_dirs"`, and `"outs"` have to evaluate to a -list of strings, and `"env"` has to evaluate to a map of strings. During -their evaluation, the functions `"outs"` and `"runfiles"` -can be used to access the logical paths of the artifacts +The fields `"cmds"`, `"sh -c"`, `"out_dirs"`, `"outs"`, and `"env"` +are evaluated fields where `"cmds"`, `"out_dirs"`, and `"outs"` +have to evaluate to a list of strings, `"sh -c"` has to evalute to +a list of strings or `null`, and `"env"` has to evaluate to a map +of strings. During their evaluation, the functions `"outs"` and +`"runfiles"` can be used to access the logical paths of the artifacts and runfiles, respectively, of a target specified in `"deps"`. Here, -`"env"` specifies the environment in which the action is carried out. -`"out_dirs"` and `"outs"` define the output directories and files, -respectively, the action has to produce. Since some artifacts are to be -produced, at least one of `"out_dirs"` or `"outs"` must be a non-empty -list of strings. It is an error if one or more paths are present in both -the `"out_dirs"` and `"outs"`. Finally, the strings in `"cmds"` are -extended by a newline character and joined, and command of the action is -interpreting this string by `sh`. +`"env"` specifies the environment in which the action is carried +out. `"out_dirs"` and `"outs"` define the output directories and +files, respectively, the action has to produce. Since some artifacts +are to be produced, at least one of `"out_dirs"` or `"outs"` must +be a non-empty list of strings. It is an error if one or more paths +are present in both the `"out_dirs"` and `"outs"`. Finally, the +strings in `"cmds"` are extended by a newline character and joined, +and command of the action is the result of evaluating the field +`"sh -c"` (or `["sh", "-c"]` if `"sh -c"` evaluates to `null` or +`[]`) extended by this string. The artifacts of this target are the outputs (as declared by `"out_dirs"` and `"outs"`) of this action. Runfiles and provider map are |