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Add support for meson.options as a replacement for meson_options.txt
We will still try to load `meson_options.txt` if `meson.options` doesn't exist. Because there are some advantages to using `meson.options` even with older versions of meson (such as better text editor handling) we will not warn about the existence of a `meson.options` file if a `meson_options.txt` file or symlink also exists. The name `meson.options` was picked instead of alternative proposals, such as `meson_options.build` for a couple of reasons: 1. meson.options is shorter 2. While the syntax is the same, only the `option()` function may be called in meson.options, while, it may not be called in meson.build 3. While the two files share a syntax and elementary types (strings, arrays, etc), they have different purposes: `meson.build` declares build targets, `meson.options` declares options. This is similar to the difference between C's `.c` and `.h` extensions. As an implementation detail `Interpreter.option_file` has been removed, as it is used exactly once, in the `project()` call to read the options, and we can just calculate it there and not store it. Fixes: mesonbuild#11176
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au BufNewFile,BufRead meson.build set filetype=meson | ||
au BufNewFile,BufRead meson.options set filetype=meson | ||
au BufNewFile,BufRead meson_options.txt set filetype=meson | ||
au BufNewFile,BufRead *.wrap set filetype=dosini |
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## Support for reading options from meson.options | ||
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Support has been added for reading options from `meson.options` instead of | ||
`meson_options.txt`. These are equivalent, but not using the `.txt` extension | ||
for a build file has a few advantages, chief among them many tools and text | ||
editors expect a file with the `.txt` extension to be plain text files, not | ||
build scripts. |
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project('options too old', meson_version : '>= 0.63') | ||
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subproject('no-warn') |
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option('foo', type : 'string') |
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test cases/warning/9 meson.options/subprojects/no-warn/meson.build
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project('has both no warn', meson_version : '>= 0.63') |
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test cases/warning/9 meson.options/subprojects/no-warn/meson.options
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option('foo', type : 'string') |
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test cases/warning/9 meson.options/subprojects/no-warn/meson_options.txt
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meson.options |
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{ | ||
"stdout": [ | ||
{ | ||
"line": "WARNING: Project targets '>= 0.63' but uses feature introduced in '1.1': meson.options file. Use meson_options.txt instead" | ||
} | ||
] | ||
} |
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