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reference: using periods here is unusual

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Tshepang Lekhonkhobe 2015-09-10 05:48:08 +02:00
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@ -2055,31 +2055,31 @@ arbitrarily complex configurations through nesting.
The following configurations must be defined by the implementation: The following configurations must be defined by the implementation:
* `debug_assertions`. Enabled by default when compiling without optimizations. * `debug_assertions` - Enabled by default when compiling without optimizations.
This can be used to enable extra debugging code in development but not in This can be used to enable extra debugging code in development but not in
production. For example, it controls the behavior of the standard library's production. For example, it controls the behavior of the standard library's
`debug_assert!` macro. `debug_assert!` macro.
* `target_arch = "..."`. Target CPU architecture, such as `"x86"`, `"x86_64"` * `target_arch = "..."` - Target CPU architecture, such as `"x86"`, `"x86_64"`
`"mips"`, `"powerpc"`, `"arm"`, or `"aarch64"`. `"mips"`, `"powerpc"`, `"arm"`, or `"aarch64"`.
* `target_endian = "..."`. Endianness of the target CPU, either `"little"` or * `target_endian = "..."` - Endianness of the target CPU, either `"little"` or
`"big"`. `"big"`.
* `target_env = ".."` - an option provided by the compiler by default * `target_env = ".."` - An option provided by the compiler by default
describing the runtime environment of the target platform. Some examples of describing the runtime environment of the target platform. Some examples of
this are `musl` for builds targeting the MUSL libc implementation, `msvc` for this are `musl` for builds targeting the MUSL libc implementation, `msvc` for
Windows builds targeting MSVC, and `gnu` frequently the rest of the time. This Windows builds targeting MSVC, and `gnu` frequently the rest of the time. This
option may also be blank on some platforms. option may also be blank on some platforms.
* `target_family = "..."`. Operating system family of the target, e. g. * `target_family = "..."` - Operating system family of the target, e. g.
`"unix"` or `"windows"`. The value of this configuration option is defined `"unix"` or `"windows"`. The value of this configuration option is defined
as a configuration itself, like `unix` or `windows`. as a configuration itself, like `unix` or `windows`.
* `target_os = "..."`. Operating system of the target, examples include * `target_os = "..."` - Operating system of the target, examples include
`"windows"`, `"macos"`, `"ios"`, `"linux"`, `"android"`, `"freebsd"`, `"dragonfly"`, `"windows"`, `"macos"`, `"ios"`, `"linux"`, `"android"`, `"freebsd"`, `"dragonfly"`,
`"bitrig"` , `"openbsd"` or `"netbsd"`. `"bitrig"` , `"openbsd"` or `"netbsd"`.
* `target_pointer_width = "..."`. Target pointer width in bits. This is set * `target_pointer_width = "..."` - Target pointer width in bits. This is set
to `"32"` for targets with 32-bit pointers, and likewise set to `"64"` for to `"32"` for targets with 32-bit pointers, and likewise set to `"64"` for
64-bit pointers. 64-bit pointers.
* `test`. Enabled when compiling the test harness (using the `--test` flag). * `test` - Enabled when compiling the test harness (using the `--test` flag).
* `unix`. See `target_family`. * `unix` - See `target_family`.
* `windows`. See `target_family`. * `windows` - See `target_family`.
You can also set another attribute based on a `cfg` variable with `cfg_attr`: You can also set another attribute based on a `cfg` variable with `cfg_attr`: