Script PHP artisan clear-compiled handling the pre-update-cmd event returned with an error



  [RuntimeException]  
  Error Output:       



update [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--lock] [--no-plugins] [--no-custom-installers] [--no-scripts] [--no-progress] [--with-dependencies] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [packages1] ... [packagesN]

我只要求：

"require": {
        "laravel/framework": "4.1.*","way/generators": "2.*","madewithlove/laravel-oauth2": "0.4.*"
    },

此外,我收到这个错误之前(即使我在我的环境中运行PHP 5.4.10)：

PHPseclib/PHPseclib suggests installing ext-gmp (Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.)
PHPseclib/PHPseclib suggests installing pear-pear/PHP_Compat (Install PHP_Compat to get PHPseclib working on PHP < 4.3.3.)
d11wtq/boris suggests installing ext-readline (*)
d11wtq/boris suggests installing ext-pcntl (*)
Writing lock file
Generating autoload files

编辑：

composer.json中使用的脚本：

"scripts": {
        "pre-install-cmd": [
            "PHP artisan clear-compiled"
        ],"post-install-cmd": [
            "PHP artisan optimize"
        ],"pre-update-cmd": [
            "PHP artisan clear-compiled"
        ],"post-update-cmd": [
            "PHP artisan optimize"
        ],"post-create-project-cmd": [
            "PHP artisan key:generate"
        ]
    },