which versions of Solana SDK and Anchor are compatible with the stable toolchain.? It appears that the current nightly toolchain you are using (nightly-x86_64-unknown-linux-gnu) does not support the bpfel-unknown-unknown target, which is necessary for building Solana programs!! missing the required target for building Solana programs, which is bpfel-unknown-unknown. Thank you
1 Answer
You'll need to install the Solana toolsuite, which contains the compiler which can target bpfel-unknown-unknown.
After you follow the instructions at https://solana.com/docs/intro/installation#install-the-solana-cli, you should be able to run cargo build-bpf or cargo build-sbf
