'Stuck in compilation （substrate-node-template：make build ）

I followed the tutorialenter link description here to this step，

 make build
 WASM_BUILD_TOOLCHAIN=nightly-2020-10-05 cargo build --release
       Compiling node-template-runtime v2.0.0 (/home/wangliqiu2021/CLionProjects/substrate-node-template/runtime)
 Building [=====================================================> ] 857/861: node-template-runtime(build)

Cargo has been executed for a long time(almost one+ hour) without ending,It seems to be stuck, does anyone know the reason？help me

OS：Ubuntu 20.04

CPU: AMD Ryzen 7 1700 Eight-Core Processor

Solution 1:^[1]

I found the reason.

$CARGO_HOME/config.toml:

[build]
target-dir = "target"

remove it.

Solution 2:^[2]

The compile is not stuck in compilation, it is just taking a while due to the 800+ dependencies. From @gnunicorn on this github issue:

Rust isn't particular quick with the compiling at the moment and opaque to the person in front, at this step (when compiling node-template-runtime) we are actually building the project twice: once natively and once in wasm. So at some step in between it appears as if nothing happens and that can take up to half the total build time – if the other part took e.g. 10minutes then this process might take another 10min without any indicator of process (other than the CPU pumping hard).

You are doing a release build (cargo build --release) which enables optimizations. For development purposes, a regular build or just a cargo check will be substantially faster.

Some comments in the linked GitHub issue mentioned that running a cargo clean and rebuilding helped speed up compile times, so you can try that as well.

Solution 3:^[3]

From your username. I think you are in China, same as me.

node-template-runtime(build) means you're compiling the runtime into a wasm file. During this, it might need a download (so try to use a VPN).

The download only happened in 1.0.0 https://docs.rs/substrate-wasm-builder/1.0.0/substrate_wasm_builder/?search=

Also, the wasm compiling will take a long time too (depend on your hardware).

In the 2016 MacBookPro, the whole compiling takes 30mins.

Moreover, there might be a bug in that build.rs. Sometimes I've to run cargo clean. If I interrupt the compiling while node-template-runtime(build).

Solution 4:^[4]

In my case the issue was, that the WASM runtime build expects to find the WASM files inside the local target directory.

If the build can't find the local WASM files in the target directory - it just hangs or deadlocks (e.g. GitHub issue).

I had to change the target-dir setting in ~/.cargo/config.toml.

You can also override the global setting with a local env var:

CARGO_TARGET_DIR=target cargo build

Or you can use the cargo CLI flags:

cargo build --target-dir=target

Note that some of the wasm-builder based build scripts ignore the CARGO_TARGET_DIR env variable (e.g. wasm_project.rs).

Sources

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Source: Stack Overflow

Solution	Source
Solution 1	Mihir Luthra
Solution 2
Solution 3
Solution 4

'Stuck in compilation （substrate-node-template：make build ）

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Solution 4:[4]

Sources

Related Questions

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