CentOS 無法安裝 libyaml-devel libffi-devel

我正在嘗試通過 RVM 安裝最新的 ruby​​。我無法安裝安裝，因為它需要 libyaml-devel 和 libffi-dev。每當我嘗試安裝它們時，我都會收到找不到包的錯誤

[root@dev workspace]# rvm requirements
Checking requirements for redhat.
Enabling optional repository
Username: ^C
User interrupted process.

Installing requirements for redhat.
Installing required packages: libyaml-devel, libffi-devel..
Error running 'requirements_centos_libs_install libyaml-devel libffi-devel',
showing last 15 lines of /usr/local/rvm/log/1467891146/package_install_libyaml-devel_libffi-devel.log
+ __rvm_try_sudo yum install -y libyaml-devel libffi-devel
+ typeset -a command_to_run
+ typeset sudo_path sbin_path missing_paths
+ command_to_run=("$@")
+ ((  UID == 0  ))
+ yum install -y libyaml-devel libffi-devel
Failed to set locale, defaulting to C
Loaded plugins: product-id, rhnplugin, security, subscription-manager
This system is registered to Red Hat Subscription Management, but is not receiving updates. You can use subscription-manager to assign subscriptions.
Setting up Install Process

No package libyaml-devel available.
No package libffi-devel available.
Error: Nothing to do
+ return 1
+ return 1

libyaml-devel並由libffi-develCentOS 8 的 PowerTools-repository 提供，預設情況下是禁用的。

所以一個簡單的yum --enablerepo=powertools install libyaml-devel libffi-devel應該做的伎倆。

（也許發布其他答案時並非如此。）

你沒有執行 CentOS。您正在執行沒有訂閱的 RHEL6。聯繫您的系統管理員以添加訂閱，您將能夠添加軟體包。我不建議您從某個由 IP 定址的隨機 FTP 伺服器安裝 CentOS 軟體包。你不知道你得到了什麼，你也沒有檢查 RPM GPG 簽名。

如果您打算安裝 CentOS，也許您應該從CentOS 媒體重新安裝系統。

引用自：https://unix.stackexchange.com/questions/294414