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Document target_abi #1446

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Feb 25, 2024
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Document target_abi #1446

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15 changes: 15 additions & 0 deletions src/conditional-compilation.md
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Expand Up @@ -166,6 +166,21 @@ Example values:
* `"musl"`
* `"sgx"`

### `target_abi`

Key-value option set to further disambiguate the `target_env` with information
about the target ABI. For historical reasons,
this value is only defined as not the empty-string when actually needed for
disambiguation. Thus, for example, on many GNU platforms, this value will be
empty.

Example values:

* `""`
* `"llvm"`
* `"eabihf"`
* `"abi64"`

### `target_endian`

Key-value option set once with either a value of "little" or "big" depending
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