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# GNOME module |
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This module provides helper tools for build operations needed when |
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building Gnome/GLib programs. |
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**Note**: the compilation commands here might not work properly when |
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you change the source files. This is a bug in the respective |
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compilers which do not expose the required dependency |
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information. This has been reported upstream in [this bug]. Until |
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this is fixed you need to be careful when changing your source |
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files. |
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[this bug]: https://bugzilla.gnome.org/show_bug.cgi?id=745754 |
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## Usage |
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To use this module, just do: **`gnome = import('gnome')`**. The |
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following functions will then be available as methods on the object |
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with the name `gnome`. You can, of course, replace the name `gnome` |
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with anything else. |
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### gnome.compile_resources() |
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This function compiles resources specified in an XML file into code |
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that can be embedded inside the main binary. Similar a build target it |
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takes two positional arguments. The first one is the name of the |
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resource and the second is the XML file containing the resource |
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definitions. If the name is `foobar`, Meson will generate a header |
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file called `foobar.h`, which you can then include in your sources. |
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* `c_name`: passed to the resource compiler as an argument after |
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`--c-name` |
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* `dependencies`: extra targets to depend upon for building |
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* `export`: (*Added 0.37.0*) if true, export the symbols of the |
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generated sources |
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* `extra_args`: extra command line arguments to pass to the resource |
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* `gresource_bundle`: (*Added 0.37.0*) if true, output a `.gresource` |
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file instead of source |
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* `install`: (*Added 0.37.0*) if true, install the gresource file |
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* `install_dir`: (*Added 0.37.0*) location to install the header or |
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bundle depending on previous options |
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* `install_header`: (*Added 0.37.0*) if true, install the header file |
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* `source_dir`: a list of subdirectories where the resource compiler |
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should look up the files, relative to the location of the XML file |
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Returns an array containing: `[c_source, header_file]` or |
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`[gresource_bundle]` |
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Example: |
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```meson |
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gnome = import('gnome') |
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asresources = gnome.compile_resources( |
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'as-resources', 'data/asresources.gresource.xml', |
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source_dir: 'data', |
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c_name: 'as' |
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) |
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executable( |
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meson.project_name(), |
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asresources, |
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dependencies: my_deps, |
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install: true |
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) |
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``` |
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### gnome.generate_gir() |
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Generates GObject introspection data. Takes one positional argument, |
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the build target you want to build gir data for. There are several |
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keyword arguments. Many of these map directly to the `g-ir-scanner` |
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tool so see its documentation for more information. |
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* `dependencies`: deps to use during introspection scanning |
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* `extra_args`: command line arguments to pass to gir compiler |
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* `export_packages`: extra packages the gir file exports |
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* `sources`: the list of sources to be scanned for gir data |
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* `nsversion`: namespace version |
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* `namespace`: the namespace for this gir object which determines |
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output files |
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* `identifier_prefix`: the identifier prefix for the gir object, |
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e.g. `Gtk` |
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* `includes`: list of gir names to be included, can also be a GirTarget |
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* `header`: *(Added 0.43.0)* name of main c header to include for the library, e.g. `glib.h` |
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* `dependencies`: deps to use during introspection scanning |
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* `include_directories`: extra include paths to look for gir files |
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* `install`: if true, install the generated files |
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* `install_dir_gir`: (*Added 0.35.0*) which directory to install the |
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gir file into |
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* `install_dir_typelib`: (*Added 0.35.0*) which directory to install |
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the typelib file into |
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* `link_with`: list of libraries to link with |
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* `symbol_prefix`: the symbol prefix for the gir object, e.g. `gtk`, |
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(*Since 0.43.0*) an ordered list of multiple prefixes is allowed |
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Returns an array of two elements which are: `[gir_target, |
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typelib_target]` |
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### gnome.genmarshal() |
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Generates a marshal file using the `glib-genmarshal` tool. The first |
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argument is the basename of the output files. |
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* `extra_args`: (*Added 0.42.0*) additional command line arguments to |
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pass |
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* `install_header`: if true, install the generated header |
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* `install_dir`: directory to install header to |
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* `nostdinc`: if true, don't include the standard marshallers from |
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glib |
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* `internal`: if true, mark generated sources as internal to |
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`glib-genmarshal` (*Requires GLib 2.54*) |
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* `prefix`: the prefix to use for symbols |
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* `skip_source`: if true, skip source location comments |
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* `stdinc`: if true, include the standard marshallers from glib |
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* `sources`: the list of sources to use as inputs |
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* `valist_marshallers`: if true, generate va_list marshallers |
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*Added 0.35.0* |
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Returns an array of two elements which are: `[c_source, header_file]` |
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### gnome.mkenums() |
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Generates enum files for GObject using the `glib-mkenums` tool. The |
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first argument is the base name of the output files, unless `c_template` |
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and `h_template` are specified. In this case, the output files will be |
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the base name of the values passed as templates. |
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This method is essentially a wrapper around the `glib-mkenums` tool's |
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command line API. It is the most featureful method for enum creation. |
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Typically you either provide template files or you specify the various |
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template sections manually as strings. |
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Most libraries and applications will be using the same standard |
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template with only minor tweaks, in which case the |
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`gnome.mkenums_simple()` convenience method can be used instead. |
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Note that if you `#include` the generated header in any of the sources |
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for a build target, you must add the generated header to the build |
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target's list of sources to codify the dependency. This is true for |
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all generated sources, not just `mkenums`. |
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* `c_template`: template to use for generating the source |
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* `comments`: comment passed to the command |
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* `h_template`: template to use for generating the header |
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* `identifier_prefix`: prefix to use for the identifiers |
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* `install_header`: if true, install the generated header |
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* `install_dir`: directory to install the header |
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* `sources`: the list of sources to make enums with |
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* `symbol_prefix`: prefix to use for the symbols |
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* `eprod`: enum text |
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* `fhead`: file header |
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* `fprod`: file text |
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* `ftail`: file tail |
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* `vhead`: value text |
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* `vtail`: value tail |
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*Added 0.35.0* |
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Returns an array of two elements which are: `[c_source, header_file]` |
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### gnome.mkenums_simple() |
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Generates enum `.c` and `.h` files for GObject using the |
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`glib-mkenums` tool with the standard template used by most |
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GObject-based C libraries. The first argument is the base name of the |
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output files. |
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Note that if you `#include` the generated header in any of the sources |
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for a build target, you must add the generated header to the build |
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target's list of sources to codify the dependency. This is true for |
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all generated sources, not just `mkenums_simple`. |
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* `body_prefix`: additional prefix at the top of the body file, |
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e.g. for extra includes |
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* `decorator`: optional decorator for the function declarations, |
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e.g. `GTK_AVAILABLE` or `GST_EXPORT` |
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* `function_prefix`: additional prefix for function names, e.g. in |
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case you want to add a leading underscore to functions used only |
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internally |
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* `header_prefix`: additional prefix at the top of the header file, |
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e.g. for extra includes (which may be needed if you specify a |
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decorator for the function declarations) |
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* `install_header`: if true, install the generated header |
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* `install_dir`: directory to install the header |
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* `identifier_prefix`: prefix to use for the identifiers |
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* `sources`: the list of sources to make enums with |
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* `symbol_prefix`: prefix to use for the symbols |
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Example: |
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```meson |
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gnome = import('gnome') |
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my_headers = ['myheader1.h', 'myheader2.h'] |
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my_sources = ['mysource1.c', 'mysource2.c'] |
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# will generate myenums.c and myenums.h based on enums in myheader1.h and myheader2.h |
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enums = gnome.mkenums_simple('myenums', sources : my_headers) |
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mylib = library('my', my_sources, enums, |
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include_directories: my_incs, |
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dependencies: my_deps, |
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c_args: my_cargs, |
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install: true) |
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``` |
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*Added 0.42.0* |
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Returns an array of two elements which are: `[c_source, header_file]` |
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### gnome.compile_schemas() |
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When called, this method will compile the gschemas in the current |
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directory. Note that this is not for installing schemas and is only |
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useful when running the application locally for example during tests. |
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* `build_by_default`: causes, when set to true, to have this target be |
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built by default, that is, when invoking plain `ninja`, the default |
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value is true for all built target types |
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* `depend_files`: files ([`string`](#string-object), |
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[`files()`](#files), or [`configure_file()`](#configure_file)) of |
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schema source XML files that should trigger a re-compile if changed. |
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### gnome.gdbus_codegen() |
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Compiles the given XML schema into gdbus source code. Takes two |
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positional arguments, the first one specifies the base name to use |
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while creating the output source and header and the second specifies |
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one XML file. |
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* `sources`: list of XML files |
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* `interface_prefix`: prefix for the interface |
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* `namespace`: namespace of the interface |
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* `object_manager`: *(Added 0.40.0)* if true generates object manager code |
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* `annotations`: *(Added 0.43.0)* list of lists of 3 strings for the annotation for `'ELEMENT', 'KEY', 'VALUE'` |
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* `docbook`: *(Added 0.43.0)* prefix to generate `'PREFIX'-NAME.xml` docbooks |
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* `build_by_default`: causes, when set to true, to have this target be |
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built by default, that is, when invoking plain `ninja`, the default |
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value is true for all built target types |
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* `install_dir`: (*Added 0.46.0*) location to install the header or |
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bundle depending on previous options |
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* `install_header`: (*Added 0.46.0*) if true, install the header file |
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Starting *0.46.0*, this function returns a list of at least two custom targets |
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(in order): one for the source code and one for the header. The list will |
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contain a third custom target for the generated docbook files if that keyword |
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argument is passed. |
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Earlier versions return a single custom target representing all the outputs. |
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Generally, you should just add this list of targets to a top level target's |
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source list. |
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Example: |
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```meson |
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gnome = import('gnome') |
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# The returned source would be passed to another target |
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gdbus_src = gnome.gdbus_codegen('example-interface', |
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sources: 'com.example.Sample.xml', |
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interface_prefix : 'com.example.', |
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namespace : 'Sample', |
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annotations : [ |
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['com.example.Hello()', 'org.freedesktop.DBus.Deprecated', 'true'] |
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], |
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docbook : 'example-interface-doc' |
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) |
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``` |
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### gnome.generate_vapi() |
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Creates a VAPI file from gir. The first argument is the name of the |
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library. |
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* `gir_dirs`: extra directories to include for gir files |
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* `install`: if true, install the VAPI file |
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* `install_dir`: location to install the VAPI file (defaults to datadir/vala/vapi) |
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* `metadata_dirs`: extra directories to include for metadata files |
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* `packages`: VAPI packages that are depended upon |
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* `sources`: the gir source to generate the VAPI from |
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* `vapi_dirs`: extra directories to include for VAPI files |
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Returns a custom dependency that can be included when building other |
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VAPI or Vala binaries. |
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*Added 0.36.0* |
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### gnome.yelp() |
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Installs help documentation using Yelp. The first argument is the |
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project id. |
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This also creates two targets for translations |
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`help-$project-update-po` and `help-$project-pot`. |
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* `languages`: list of languages for translations |
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* `media`: list of media such as images |
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* `sources`: list of pages |
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* `symlink_media`: if media should be symlinked not copied (defaults to `true` since 0.42.0) |
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Note that very old versions of yelp may not support symlinked media; |
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At least 3.10 should work. |
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*Added 0.36.0* |
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### gnome.gtkdoc() |
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Compiles and installs gtkdoc documentation into |
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`prefix/share/gtk-doc/html`. Takes one positional argument: The name |
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of the module. |
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* `content_files`: a list of content files |
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* `dependencies`: a list of dependencies |
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* `fixxref_args`: a list of arguments to pass to `gtkdoc-fixxref` |
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* `gobject_typesfile`: a list of type files |
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* `ignore_headers`: a list of header files to ignore |
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* `html_assets`: a list of assets for the HTML pages |
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* `html_args` a list of arguments to pass to `gtkdoc-mkhtml` |
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* `install`: if true, installs the generated docs |
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* `install_dir`: the directory to install the generated docs relative |
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to the gtk-doc html dir or an absolute path (default: module name) |
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* `main_xml`: specifies the main XML file |
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* `main_sgml`: equal to `main_xml` |
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* `mkdb_args`: a list of arguments to pass to `gtkdoc-mkdb` |
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* `scan_args`: a list of arguments to pass to `gtkdoc-scan` |
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* `scanobjs_args`: a list of arguments to pass to `gtkdoc-scangobj` |
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* `src_dir`: include_directories to include |
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This creates a `$module-doc` target that can be ran to build docs and |
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normally these are only built on install. |
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### gnome.gtkdoc_html_dir() |
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Takes as argument a module name and returns the path where that |
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module's HTML files will be installed. Usually used with |
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`install_data` to install extra files, such as images, to the output |
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directory.
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