meson/docs/markdown/snippets/add_optimization_plain_opti...

## Add `optimization` `plain` option

The `optimization` built-in option now accepts `plain` value,
which will not set any optimization flags. This is now the default
value of the flag for `buildtype=plain`, which is useful for distros,
that set the optimization and hardening flags by other means.

If you are using the value of `get_option('optimization')` in your
Meson scripts, make sure you are not making assumptions about it,
such as that the value can be passed to a compiler in `-O` flag.
compilers: Add optimization=plain option https://github.com/mesonbuild/meson/pull/9287 changed the `optimization=0` to pass `-O0` to the compiler. This change is reasonable by itself but unfortunately, it breaks `buildtype=plain`, which promises that “no extra build flags are used”. `buildtype=plain` is important for distros like NixOS, which manage compiler flags for optimization and hardening themselves. Let’s introduce a new optimization level that does nothing and set it as the default for `buildtype=plain`. 2 years ago			## Add `optimization` `plain` option

			The `optimization` built-in option now accepts `plain` value,
			`which will not set any optimization flags. This is now the default`
			value of the flag for `buildtype=plain`, which is useful for distros,
			`that set the optimization and hardening flags by other means.`

			If you are using the value of `get_option('optimization')` in your
			`Meson scripts, make sure you are not making assumptions about it,`
			such as that the value can be passed to a compiler in `-O` flag.