mysql - 安装用于 Ruby 的 MySQL gem 以及 JRuby gem

Question

我的机器上安装了 JRuby MySQL gem。然而，由于某种原因，我不得不更改为 Ruby 而不是 JRuby，除了未安装用于 Ruby 的 MySQL gem 之外，一切似乎都工作正常，现在当我尝试安装它时，出现以下错误:

Building native extensions.  This could take a while...
ERROR:  Error installing mysql:
    ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb --with-mysql-dir=/usr/include/mysql
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lm... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lz... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lsocket... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lnsl... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lmygcc... no
checking for mysql_query() in -lmysqlclient... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include

我用谷歌搜索发现我可能需要安装libmysqlclient12-dev包。

但是当我尝试这样做时，出现以下错误:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package libmysqlclient12-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package libmysqlclient12-dev has no installation candidate

现在我似乎碰壁了，无法继续前进。任何指示或帮助将不胜感激。

干杯

Answer 1

我也遇到了同样的问题。我做到了

apt-get install libmysqlclient-dev

在 Ubuntu 上，它成功了。