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rustc: Add target_vendor for target triples

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This adds a new target property, `target_vendor` which can be used as a
matcher for conditional compilation. The vendor is part of the autoconf
target triple: <arch><sub>-<vendor>-<os>-<env>

The default value for `target_vendor` is "unknown".

Matching against the `target_vendor` with `#[cfg]` is currently feature
gated as `cfg_target_vendor`.
This commit is contained in:
Sebastian Wicki 2015-09-24 01:20:43 +02:00
parent afae2ff723
commit af68cdfea1
36 changed files with 95 additions and 3 deletions
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7
src/doc/reference.md
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@ -2092,6 +2092,8 @@ The following configurations must be defined by the implementation:
* `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
64-bit pointers.
* `target_vendor = "..."` - Vendor of the target, for example `apple`, `pc`, or
simply `"unknown"`.
* `test` - Enabled when compiling the test harness (using the `--test` flag).
* `unix` - See `target_family`.
* `windows` - See `target_family`.
@ -2268,7 +2270,7 @@ The currently implemented features of the reference compiler are:
* `advanced_slice_patterns` - See the [match expressions](#match-expressions)
section for discussion; the exact semantics of
slice patterns are subject to change, so some types
are still unstable.
are still unstable.
* `slice_patterns` - OK, actually, slice patterns are just scary and
completely unstable.
@ -2289,6 +2291,9 @@ The currently implemented features of the reference compiler are:
* `box_syntax` - Allows use of `box` expressions, the exact semantics of which
is subject to change.
* `cfg_target_vendor` - Allows conditional compilation using the `target_vendor`
matcher which is subject to change.
* `concat_idents` - Allows use of the `concat_idents` macro, which is in many
ways insufficient for concatenating identifiers, and may be
removed entirely for something more wholesome.