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83 lines
3.1 KiB
83 lines
3.1 KiB
name: generator |
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returns: generator |
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description: | |
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See also: [[custom_target]] |
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This function creates a [[@generator]] object that can |
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be used to run custom compilation commands. The only positional |
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argument is the executable to use. It can either be a self-built |
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executable or one returned by find_program. |
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The template strings passed to all the keyword arguments accept |
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the following special substitutions: |
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- `@PLAINNAME@`: the complete input file name, e.g: `foo.c` becomes `foo.c` (unchanged) |
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- `@BASENAME@`: the base of the input filename, e.g.: `foo.c.y` becomes `foo.c` (extension is removed) |
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Each string passed to the `output` keyword argument *must* be |
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constructed using one or both of these two substitutions. |
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In addition to the above substitutions, the `arguments` keyword |
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argument also accepts the following: |
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- `@OUTPUT@`: the full path to the output file |
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- `@INPUT@`: the full path to the input file |
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- `@DEPFILE@`: the full path to the depfile |
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- `@SOURCE_DIR@`: the full path to the root of the source tree |
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- `@CURRENT_SOURCE_DIR@`: this is the directory where the currently processed meson.build is located in |
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- `@BUILD_DIR@`: the full path to the root of the build dir where the output will be placed |
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NOTE: Generators should only be used for outputs that will ***only*** |
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be used as inputs for a [[build_target]] or a [[custom_target]]. |
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When you use the processed output of a |
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generator in multiple targets, the generator will be run multiple |
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times to create outputs for each target. Each output will be created |
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in a target-private directory `@BUILD_DIR@`. |
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If you want to generate files for general purposes such as for |
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generating headers to be used by several sources, or data that will be |
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installed, and so on, use a [[custom_target]] instead. |
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posargs: |
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exe: |
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type: exe | external_program |
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description: Executable for the command to run |
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kwargs: |
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arguments: |
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type: list[str] |
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description: A list of template strings that will be the command line arguments passed to the executable. |
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depends: |
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# Not sure why this is not just `target` |
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type: list[build_tgt | custom_tgt] |
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since: 0.51.0 |
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description: | |
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An array of build targets that must be built before |
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this generator can be run. This is used if you have a generator that calls |
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a second executable that is built in this project. |
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depfile: |
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type: str |
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description: | |
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A template string pointing to a dependency file that a |
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generator can write listing all the additional files this target |
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depends on, for example a C compiler would list all the header files |
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it included, and a change in any one of these files triggers a |
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recompilation, |
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output: |
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type: list[str] |
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description: | |
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Template string (or list of template strings) defining |
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how an output file name is (or multiple output names are) generated |
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from a single source file name. |
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capture: |
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type: bool |
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default: false |
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since: 0.43.0 |
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description: | |
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When this argument is set to true, Meson captures `stdout` |
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of the `executable` and writes it to the target file |
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specified as `output`.
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