Troubleshooting installation from source
Building binaries locally is a computationally heavy task and will put your computer to the test. The compilation usually requires at least 16 GB of RAM and depending on the optimisation of your machine, could require slightly more (for some machines slightly less). For this reason, compilation can sometimes fail.
src/apps/namada lib could not compile due to previous errors. Exited with exit code:
is a common error that can sometimes mean your computer ran out of memory when compiling. To resolve this, I have found closing all other applications and recompiling once or twice will do the trick. Otherwise more RAM will be needed.
Compilation errors due to missing library installations when building the binaries for the first time can be a common problem.
If one runs into the error
Entering directory '/root/namada/wasm/wasm_source' RUSTFLAGS='-C link-arg=-s' cargo build --release --target wasm32-unknown-unknown --target-dir 'target' --features tx_bond && \ cp "./target/wasm32-unknown-unknown/release/namada_wasm.wasm" ../tx_bond.wasm Compiling proc-macro2 v1.0.46 Compiling quote v1.0.21 error: linker `cc` not found | = note: No such file or directory (os error 2) error: could not compile `quote` due to previous error warning: build failed, waiting for other jobs to finish... error: could not compile `proc-macro2` due to previous error
It may be resolved by running
sudo apt install build-essential
Another solution can sometimes be installing
libcland-dev. This can be achieved through:
sudo apt-get update -y sudo apt-get install -y libclang-dev
Another issue the compiler may run into is that it cannot find the
error[E0463]: can't find crate for `core` | = note: the `wasm32-unknown-unknown` target may not be installed = help: consider downloading the target with `rustup target add wasm32-unknown-unknown` error[E0463]: can't find crate for `compiler_builtins` For more information about this error, try `rustc --explain E0463`. error: could not compile `cfg-if` due to 2 previous errors
This issue can be resolved by running
rustup target add wasm32-unknown-unknown
(Yes the name of the target is
wasm32-unknown-unknown. This is not the compiler unable to tell which version/release it is).
If you run into the error
Could not find directory of OpenSSL installation, and this `-sys` crate cannot proceed without this knowledge. If OpenSSL is installed and this crate had trouble finding it, you can set the `OPENSSL_DIR` environment variable for the compilation process. Make sure you also have the development packages of openssl installed. For example, `libssl-dev` on Ubuntu or `openssl-devel` on Fedora. If you're in a situation where you think the directory *should* be found automatically, please open a bug at https://github.com/sfackler/rust-openssl and include information about your system as well as this message.
Then the solution is spelled out for you. You need to install the development packages of OpenSSL. For Ubuntu, this is
libssl-dev. For Fedora, this is
openssl-devel. For other distributions, please refer to the OpenSSL website (opens in a new tab).
For Ubuntu, this can be achieved through
sudo apt-get install libssl-dev