[Bug] Build Fails on Apple Silicon M1, librocksdb-sys v6.11.4

[damons]

🐛 Bug Report

Build currently fails on M1 chip. MacOS Big Sur, 11.0.1.

Steps to Reproduce

1. Check out master branch.
2. cargo build --release

snarkOS % cargo build --release
   Compiling zip v0.5.9
   Compiling librocksdb-sys v6.11.4
   Compiling warp v0.2.5
   Compiling hyper-tls v0.4.3
error: failed to run custom build command for `librocksdb-sys v6.11.4`

Caused by:
  process didn't exit successfully: `/Users/damon/aleo/snarkOS/target/release/build/librocksdb-sys-dde2dfda4a9bb753/build-script-build` (exit code: 101)
  --- stderr
  thread 'main' panicked at 'libclang error; possible causes include:
  - Invalid flag syntax
  - Unrecognized flags
  - Invalid flag arguments
  - File I/O errors
  - Host vs. target architecture mismatch
  If you encounter an error missing from this list, please file an issue or a PR!', /Users/damon/.cargo/registry/src/github.com-1ecc6299db9ec823/bindgen-0.54.0/src/ir/context.rs:573:15
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
error: build failed

Expected Behavior

Successful build.

Your Environment

snarkOS repo: commit d0dd356
rustc 1.51.0-nightly (d98d2f57d 2021-01-18)
macOS Big Sur 11.0.1

[niklaslong]

This may be of interest: rust-rocksdb/rust-rocksdb#483.

Until this is fixed, installing Rosetta and running SnarkOS compiled to x86_64-apple-darwin is a workable solution.

[niklaslong]

Update: looks like a fix is coming soon.

[jvsteiner]

I'm still getting this on the latest commit: 904f7679273c40ebead46de4f047a7eaf24e1017 :

error: failed to run custom build command for `librocksdb-sys v0.8.0+7.4.4`

Caused by:
  process didn't exit successfully: `/Users/jamie/Code/substrate-node-template/target/release/build/librocksdb-sys-5135db74e4151ca7/build-script-build` (exit status: 101)
  --- stderr
  thread 'main' panicked at 'Unable to find libclang: "the `libclang` shared library at /opt/homebrew/Cellar/llvm/15.0.6/lib/libclang.dylib could not be opened: dlopen(/opt/homebrew/Cellar/llvm/15.0.6/lib/libclang.dylib, 0x0005): tried: '/usr/local/Cellar/mysql@5.6/5.6.35/lib/libclang.dylib' (no such file), '/libclang.dylib' (no such file), '/opt/homebrew/Cellar/llvm/15.0.6/lib/libclang.dylib' (mach-o file, but is an incompatible architecture (have (arm64), need (x86_64)))"', /Users/jamie/.cargo/registry/src/github.com-1ecc6299db9ec823/bindgen-0.60.1/src/lib.rs:2172:31
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

This is a close issue, but still seems to be happening?

[niklaslong]

The latest commit (at time of writing) is 8f7f6d9; could you update your repository and give it another go? 🙏

Edit: I'm pretty sure you were trying to build another repository... substrate-developer-hub/substrate-node-template@904f767.

[jvsteiner]

I solved the problem - it was a toolchain issue. My rust installation had been carried over from a previous (non-M1) mac