Skip to content

Latest commit

 

History

History
59 lines (39 loc) · 5.04 KB

expand_template.md

File metadata and controls

59 lines (39 loc) · 5.04 KB
Raw

Public API for expand template

expand_template_rule

expand_template_rule(name, data, out, is_executable, stamp, stamp_substitutions, substitutions,
                     template)

Template expansion

This performs a simple search over the template file for the keys in substitutions, and replaces them with the corresponding values.

Values may also use location templates as documented in expand_locations as well as configuration variables such as $(BINDIR), $(TARGET_CPU), and $(COMPILATION_MODE) as documented in expand_variables.

ATTRIBUTES

Name Description Type Mandatory Default
name A unique name for this target. Name required
data List of targets for additional lookup information. List of labels optional []
out Where to write the expanded file.

If the template is a source file, then out defaults to be named the same as the template file and outputted to the same workspace-relative path. In this case there will be no pre-declared label for the output file. It can be referenced by the target label instead. This pattern is similar to copy_to_bin but with substitutions on the copy.

Otherwise, out defaults to [name].txt.		 Label optional None
is_executable Whether to mark the output file as executable. Boolean optional False
stamp Whether to encode build information into the output. Possible values:

- stamp = 1: Always stamp the build information into the output, even in --nostamp builds. This setting should be avoided, since it is non-deterministic. It potentially causes remote cache misses for the target and any downstream actions that depend on the result. - stamp = 0: Never stamp, instead replace build information by constant values. This gives good build result caching. - stamp = -1: Embedding of build information is controlled by the --[no]stamp flag. Stamped targets are not rebuilt unless their dependencies change.		 Integer optional -1
stamp_substitutions Mapping of strings to substitutions.

There are overlaid on top of substitutions when stamping is enabled for the target.

Substitutions can contain $(execpath :target) and $(rootpath :target) expansions, $(MAKEVAR) expansions and {{STAMP_VAR}} expansions when stamping is enabled for the target.		 Dictionary: String -> String optional {}
substitutions Mapping of strings to substitutions.

Substitutions can contain $(execpath :target) and $(rootpath :target) expansions, $(MAKEVAR) expansions and {{STAMP_VAR}} expansions when stamping is enabled for the target.		 Dictionary: String -> String optional {}
template The template file to expand. Label required

expand_template

expand_template(name, template, kwargs)

Wrapper macro for expand_template_rule.

PARAMETERS

Name Description Default Value
name name of resulting rule none
template the label of a template file, or a list of strings which are lines representing the content of the template. none
kwargs other named parameters to expand_template_rule. none