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Merged
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Dec 31, 2019
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More info about using local LLVM #547

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more info about llvm-config
mark-i-m Dec 30, 2019
42e51fa
typo
mark-i-m Dec 31, 2019
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14 changes: 12 additions & 2 deletions src/building/suggested.md
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Expand Up @@ -74,5 +74,15 @@ This is specified in the `target` section of `config.toml`:
llvm-config = "/path/to/llvm/llvm-7.0.1/bin/llvm-config"
```

On my system, this path is `/usr/bin/llvm-config-7`, but this probably varies
by installation.
We have observed the following paths before, which may be different from your system:

- `/usr/bin/llvm-config-8`
- `/usr/lib/llvm-8/bin/llvm-config`

Note that you need to have the LLVM `FileCheck` tool installed, which is used
for codegen tests. This tool is normally built with LLVM, but if you use your
own preinstalled LLVM, you will need to provide `FileCheck` in some other way.
On Debian-based systems, you can install the `llvm-N-tools` package (where `N`
is the LLVM version number, e.g. `llvm-8-tools`). Alternately, you can specify
the path to `FileCheck` with the `llvm-filecheck` config item in `config.toml`
or you can disable codegen test with the `codegen-tests` item in `config.toml`.