無法在 Mac OS X 上安裝 solc

我無法在 Mac OS X 上安裝 solc。我嘗試了以下方法：

npm install solc 

/Users/punddalinni
└── solc@0.3.0-1 
npm WARN enoent ENOENT: no such file or directory, open '/Users/punddalinni/package.json'
npm WARN punddalinni No description
npm WARN punddalinni No repository field.
npm WARN punddalinni No README data
npm WARN punddalinni No license field.

當我回到geth，我跑了

> eth.getCompilers()
[""]

當我嘗試 setSolc 時，發生了以下情況

> admin.setSolc('/Users/punddalinni/node_modules/solc')
exec: "/Users/punddalinni/node_modules/solc": permission denied
   at InvalidResponse (<anonymous>:-81662:-57)
   at send (<anonymous>:-156322:-57)
   at setSolc (<anonymous>:-133322:-57)
   at <anonymous>:1:1

我試過按照這裡的指示，但它卡在

brew install llvm --HEAD --with-clang

編輯：在 Mac 中包括來自 solc 的 package.json 的內容。

{
 "_args": [
   [
     "solc",
     "/Users/punddalinni"
   ]
 ],
 "_from": "solc@latest",
 "_id": "solc@0.3.0-1",
 "_inCache": true,
 "_installable": true,
 "_location": "/solc",
 "_nodeVersion": "4.0.0",
 "_npmOperationalInternal": {
   "host": "packages-13-west.internal.npmjs.com",
   "tmp": "tmp/solc-0.3.0-1.tgz_1457892692634_0.5487515390850604"
 },
 "_npmUser": {
   "email": "d11e9@turkd.net",
   "name": "d11e9"
 },
 "_npmVersion": "3.3.2",
 "_phantomChildren": {},
 "_requested": {
   "name": "solc",
   "raw": "solc",
   "rawSpec": "",
   "scope": null,
   "spec": "latest",
   "type": "tag"
 },
 "_requiredBy": [
   "#USER"
 ],
 "_resolved": "https://registry.npmjs.org/solc/-/solc-0.3.0-1.tgz",
 "_shasum": "523e79db0c69070f91fcbf408e8c7d0c93be176c",
 "_shrinkwrap": null,
 "_spec": "solc",
 "_where": "/Users/punddalinni",
 "author": {
   "name": "chriseth"
 },
 "bugs": {
   "url": "https://github.com/chriseth/browser-solidity/issues"
 },
 "dependencies": {},
 "description": "Solidity compiler",
 "devDependencies": {},
 "directories": {},
 "dist": {
   "shasum": "523e79db0c69070f91fcbf408e8c7d0c93be176c",
   "tarball": "http://registry.npmjs.org/solc/-/solc-0.3.0-1.tgz"
 },
 "gitHead": "5ce686c8d33db78c8f1eb8e2318eefbc5151f0eb",
 "homepage": "https://github.com/chriseth/browser-solidity#readme",
 "keywords": [
   "compiler",
   "ethereum",
   "solidity"
 ],
 "license": "MIT",
 "main": "index.js",
 "maintainers": [
   {
     "name": "chriseth",
     "email": "c@ethdev.com"
   },
   {
     "name": "d11e9",
     "email": "d11e9@turkd.net"
   }
 ],
 "name": "solc",
 "optionalDependencies": {},
 "readme": "ERROR: No README data found!",
 "repository": {
   "type": "git",
   "url": "git+https://github.com/chriseth/browser-solidity.git"
 },
 "scripts": {
   "test": "echo \"Error: no test specified\" && exit 1"
 },
 "version": "0.3.0-1"
}

有任何想法嗎？

我不熟悉 NPM，所以有一些類似的問題。簡單地執行npm install solc將嘗試在本地安裝，這可能會出現一些權限和連結問題——這可能是問題的原因。

相反，請使用全域安裝 solC $ npm install -g solc （您可能還想嘗試$ npm install solc --global，因為我不確定這兩個命令中的哪一個解決了我的問題）。

如果已安裝，請通過執行檢查它的安裝位置，$ which solcjs這應該會產生類似/usr/local/bin/solcjs

我發現我還需要按照安裝說明使用 Homebrew 來安裝/建構 solC。Brew 完成後，我檢查了 solC 是否安裝了$ which sol.

複製此目錄，然後在啟動geth console後在 setSolc 命令中使用它，例如> admin.setSolc("/usr/local/bin/solc")

運氣好的話，您會收到一條確認消息，下次執行時> eth.getCompilers()，結果應該類似於["Solidity"]

啊……你用錯了。Web3 教程沒有反映這一點，但是在使用從原始碼編譯器建構的（這是 web3 假設的）和 npm 包（教程不圍繞它）設置 Solidity 以在 web3 上編譯的方式之間存在差異. 為了編譯，您需要按照 Browser-solidity 頁面的說明進行操作：

https://github.com/chriseth/browser-solidity

摘抄：

var solc = require('solc');
var input = "contract x { function g() {} }";
var output = solc.compile(input, 1); // 1 activates the optimiser

for (var contractName in output.contracts) {
   // code and ABI that are needed by web3
   console.log(contractName + ': ' + output.contracts[contractName].bytecode);
   console.log(contractName + '; ' + JSON.parse( output.contracts[contractName].interface));
}

引用自：https://ethereum.stackexchange.com/questions/2366