acliss

Re: Composer を使って GitHub から 5.7 をインストールする方法

linuxmint15 で php composer.phar install をすると下記のエラーが出ます。
解決策はありますか？

Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Warning: The lock file is not up to date with the latest changes in composer.json. You may be getting outdated dependencies. Run update to update them.
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Installation request for facebook/php-sdk dev-master -> satisfiable by facebook/php-sdk[dev-master].
- facebook/php-sdk dev-master requires ext-curl * -> the requested PHP extension curl is missing from your system.
Problem 2
- Installation request for kertz/twitteroauth dev-master -> satisfiable by kertz/twitteroauth[dev-master].
- kertz/twitteroauth dev-master requires ext-curl * -> the requested PHP extension curl is missing from your system.