bjoernager/rust
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older toolchains not valid any more

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with the change to llvm 10 the parameter
LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN do not do any thing as
min and soft error is the same.
see 86b120e6f3/llvm/cmake/modules/CheckCompilerVersion.cmake
This commit is contained in:
Andreas Jonson 2020-07-19 16:53:37 +02:00
parent 48036804d2
commit 30659cd45e
1 changed files with 3 additions and 14 deletions
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11
README.md
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@ -157,17 +157,6 @@ by manually calling the appropriate vcvars file before running the bootstrap.
> python x.py build
```
### Building rustc with older host toolchains
It is still possible to build Rust with the older toolchain versions listed below, but only if the
LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN option is set to true in the config.toml file.
* Clang 3.1
* Apple Clang 3.1
* GCC 4.8
* Visual Studio 2015 (Update 3)
Toolchain versions older than what is listed above cannot be used to build rustc.
#### Specifying an ABI
Each specific ABI can also be used from either environment (for example, using