2019-06-17 rust开发erc20
工程是老外现成的，wrc20-rust 难点是如何编译和运行，这里记录一下
1、下载代码
git clone https://github.com/hugo-dc/wrc20-rust2、编译
make
cargo build-ewasm
error: no such subcommand: `build-ewasm`
Makefile:4: recipe for target 'all' failed
make: *** [all] Error 101可以看到直接错误，咨询作者得到方法
3、安装build-ewasm
cargo install chisel
cargo install wasm-snip
cargo install --git https://github.com/hugo-dc/cargo-build-ewasm.git然后再次make，得到下面的结果：
make
cargo build-ewasm
Building ewasm module...
Executing chisel...
Ruleset ewasm:
remapimports: Translated
trimexports: Translated
verifyimports: OK
verifyexports: OK
repack: OK
Writing to file: target/wasm32-unknown-unknown/release/ewasm_token.wasm
Minifying bytecode (wasm-snip)... OK
Finished
wasm-opt -Oz -o target/wasm32-unknown-unknown/release/ewasm_token.wasm target/wasm32-unknown-unknown/release/ewasm_token.wasm
make: wasm-opt: Command not found
Makefile:4: recipe for target 'all' failed
make: *** [all] Error 127又缺个wasm-opt
4、安装wasm-opt
编译安装
git clone https://github.com/WebAssembly/binaryen.git
cd binaryen
mkdir build
cd build
cmake ..
make
sudo make install安装成功后，回到wrc20-rust的目录，继续make
make
cargo build-ewasm
Building ewasm module...
Executing chisel...
Ruleset ewasm:
remapimports: Already OK; not translated
trimexports: Already OK; not translated
verifyimports: OK
verifyexports: OK
repack: OK
Writing to file: target/wasm32-unknown-unknown/release/ewasm_token.wasm
Minifying bytecode (wasm-snip)... OK
Finished
wasm-opt -Oz -o target/wasm32-unknown-unknown/release/ewasm_token.wasm target/wasm32-unknown-unknown/release/ewasm_token.wasm5、安装wasm32-unknown-unknown
可能出现错误：ERROR: error building wasm module, confirm target wasm32-unknown-unknown is installed
继续安装
rustup target add wasm32-unknown-unknown本文参与 腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。
原始发表：2022-05-13，如有侵权请联系 cloudcommunity@tencent.com 删除
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