status-im
/
nim-eth-contracts
mirror of https://github.com/status-im/nim-eth-contracts.git
2
0
Fork 0
Code Issues Projects Releases Wiki Activity

Update README.md

This commit is contained in:
Yuriy Glukhov 2018-11-13 14:15:28 +02:00 committed by GitHub
parent 23d628435a
commit 31efdaa8c7
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 21 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
README.md
View File

@ -4,7 +4,8 @@ Disclaimer: WIP
This is a sample of how building eWASM contracts in Nim is possible. This is a sample of how building eWASM contracts in Nim is possible.
Requirements: Requirements:
* clang 6.0 or later with WebAssembly support. Most likely has to be built manually. * clang 7.0 or later with WebAssembly support. Most likely has to be built manually.
* 32bit version of libc. On linuxes it is usually provided by the package manager.
* `wasm2wat` and `wat2wasm` from [wabt (WebAssembly binary toolkit)](https://github.com/WebAssembly/wabt) * `wasm2wat` and `wat2wasm` from [wabt (WebAssembly binary toolkit)](https://github.com/WebAssembly/wabt)
* [optional] [wasm-gc](https://github.com/alexcrichton/wasm-gc) optimizer * [optional] [wasm-gc](https://github.com/alexcrichton/wasm-gc) optimizer
@ -14,6 +15,25 @@ export WASM_LLVM_BIN=/path/to/llvm/bin/folder
nimble examples nimble examples
``` ```
## Troubleshooting
* **Emscripten doesn't work!** It is not expected to. Use clang with wasm target enabled.
* **clang is difficult to build.** No, it's easy. Follow these steps:
```
tag=release_70
INSTALL_PREFIX=$(pwd)/llvm-wasm
git clone --depth 1 --branch $tag https://github.com/llvm-mirror/llvm.git
cd llvm/tools
git clone --depth 1 --branch $tag https://github.com/llvm-mirror/clang
git clone --depth 1 --branch $tag https://github.com/llvm-mirror/lld
cd ..
mkdir build
cd build
cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$INSTALL_PREFIX -DLLVM_TARGETS_TO_BUILD= -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly ..
make -j 4 install
```
* **C compiler errors: headers not found.** Make sure you have 32bit libc installed and visible to your clang.
## License ## License
Licensed under one of the following: Licensed under one of the following: