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title: Release 0.61.0 | ||
short-description: Release notes for 0.61.0 | ||
... | ||
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# New features | ||
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## backend_startup_project | ||
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`backend_startup_project` will no longer erase the last project in a VS | ||
solution if it is not the specified project. | ||
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## Windows.compile_resources CustomTarget | ||
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Previously the Windows module only accepted CustomTargets with one output, it | ||
now accepts them with more than one output, and creates a windows resource | ||
target for each output. Additionally it now accepts indexes of CustomTargets | ||
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```meson | ||
ct = custom_target( | ||
'multiple', | ||
output : ['resource', 'another resource'], | ||
... | ||
) | ||
ct2 = custom_target( | ||
'slice', | ||
output : ['resource', 'not a resource'], | ||
... | ||
) | ||
resources = windows.compile_resources(ct, ct2[0]) | ||
``` | ||
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## Add a man page backend to refman | ||
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The refman docs (function and object reference) can now be generated as a man | ||
page. | ||
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## ``extract_objects()`` supports generated sources | ||
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Custom targets or generated files (returned by ``generator.process()``) | ||
can now be passed to ``extract_objects()``. | ||
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## Python 3.6 support will be dropped in the next release | ||
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The final [Python 3.6 release was 3.6.15 in September](https://www.python.org/dev/peps/pep-0494/#lifespan). | ||
This release series is now End-of-Life (EOL). The only LTS distribution that | ||
still ships Python 3.5 as the default Python is Ubuntu 18.04, which has Python | ||
3.8 available as well. | ||
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Python 3.7 has various features that we find useful such as future annotations, | ||
the importlib.resources module, and dataclasses. | ||
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As a result, we will begin requiring Python 3.7 or newer in Meson 0.62, which | ||
is the next release. Starting with Meson 0.61, we now print a `NOTICE:` when | ||
a `meson` command is run on Python 3.6 to inform users about this. | ||
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## Warning if check kwarg of run_command is missing | ||
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The `check` kwarg of `run_command` currently defaults to `false`. | ||
Because we want to change that, running | ||
```meson | ||
run_command('cmd') | ||
``` | ||
now results in: | ||
```text | ||
WARNING: You should add the boolean check kwarg to the run_command call. | ||
It currently defaults to false, | ||
but it will default to true in future releases of meson. | ||
See also: https://github.com/mesonbuild/meson/issues/9300 | ||
``` | ||
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## `meson rewrite` can modify `extra_files` | ||
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The build script rewriter can now modify targets' `extra_files` lists, | ||
or create them if absent. It it used in the same way as with rewriting | ||
source lists: | ||
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```bash | ||
meson rewrite target <target name/id> {add_extra_files/rm_extra_files} [list of extra files] | ||
``` | ||
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The rewriter's script mode also supports these actions: | ||
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```json | ||
{ | ||
"type": "target", | ||
"target": "<target name>", | ||
"operation": "extra_files_add / extra_files_rm", | ||
"sources": ["list", "of", "extra", "files", "to", "add, remove"], | ||
} | ||
``` | ||
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## `meson rewrite target <target> info` outputs *target*'s `extra_files` | ||
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Targets' `extra_files` lists are now included in the rewriter's target info dump | ||
as a list of file paths, in the same way `sources` are. This applies to both | ||
`meson rewrite` CLI and script mode. | ||
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## Visual Studio 2022 backend | ||
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As Visual Studio 2022 is released recently, it's time to support the | ||
new version in Meson. This mainly includes the new "v143" platform tools. | ||
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The usage is similar to other backends. For example | ||
```meson | ||
meson setup builddir --backend=vs2022 | ||
``` | ||
will configure "builddir" for projects compatible with Visual Studio 2022. | ||
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## Support for CMake <3.14 is now deprecated for CMake subprojects | ||
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In CMake 3.14, the File API was introduced and the old CMake server API was | ||
deprecated (and removed in CMake 3.20). Thus support for this API will also | ||
be removed from Meson in future releases. | ||
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This deprecation only affects CMake subprojects. | ||
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## Added support for sccache | ||
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Meson now supports [sccache](https://github.com/mozilla/sccache) just | ||
like it has supported CCache. If both sccache and CCache are | ||
available, the autodetection logic prefers sccache. | ||
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## install_symlink function | ||
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It is now possible to request for symbolic links to be installed during | ||
installation. The `install_symlink` function takes a positional argument to | ||
the link name, and installs a symbolic link pointing to `pointing_to` target. | ||
The link will be created under `install_dir` directory and cannot contain path | ||
separators. | ||
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```meson | ||
install_symlink('target', pointing_to: '../bin/target', install_dir: '/usr/sbin') | ||
``` | ||
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