尝试使用 mysql2 gem 安装应用程序时出错 [英] Error when trying to install app with mysql2 gem

问题描述

我正在尝试安装一个使用 mysql2 gem 的开源 Rails 3.2.21 应用程序，但是当我尝试运行 bundle 命令时，我收到以下错误:

Im trying to install an open source rails 3.2.21 application that uses the mysql2 gem, but when i try and run the bundle commant I get the following error:

Fetching: mysql2-0.3.18.gem (100%)
Building native extensions.  This could take a while...
p
ERROR:  Error installing mysql2:
    ERROR: Failed to build gem native extension.

    /Users/my_username/.rvm/rubies/ruby-2.1.2/bin/ruby -r ./siteconf20150614-72129-orqsb7.rb extconf.rb
checking for ruby/thread.h... yes
checking for rb_thread_call_without_gvl() in ruby/thread.h... yes
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for rb_hash_dup()... yes
checking for rb_intern3()... yes
-----
Using mysql_config at /usr/local/bin/mysql_config
-----
checking for mysql.h... yes
checking for errmsg.h... yes
checking for mysqld_error.h... yes
-----
Don't know how to set rpath on your system, if MySQL libraries are not in path mysql2 may not load
-----
-----
Setting libpath to /usr/local/Cellar/mysql/5.6.25/lib
-----
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling client.c
compiling infile.c
compiling mysql2_ext.c
compiling result.c
linking shared-object mysql2/mysql2.bundle
ld: warning: directory not found for option '-L/Users/travis/.sm/pkg/active/lib'
ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [mysql2.bundle] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/my_username/.rvm/rubies/ruby-2.1.2/lib/ruby/gems/2.1.0/gems/mysql2-0.3.18 for inspection.
Results logged to /Users/my_username/.rvm/rubies/ruby-2.1.2/lib/ruby/gems/2.1.0/extensions/x86

我尝试卸载我通过自制软件安装的每个版本的 mysql 并重新安装它们，如下所示:

I tried uninstalling every version of mysql I installed via homebrew and reinstalling them, like so:

brew uninstall --force mysql && brew install mysql

然后运行:

sudo gem install mysql2

正如此处提出的许多类似问题所建议的那样，但仍然导致与上述相同的错误.

As suggested by a number of similar questions asked on here, but it still results in the same error as above.

请有人提供有关如何启动和运行它的指导吗?

Please could someone offer guidance on how to get this up and running?

推荐答案

错误日志说:

ld: library not found for -lssl

所以，你需要安装libssl:

brew install openssl

<小时>

正如评论中指出的那样，可能需要导出库的路径.

---

As it was pointed out in comments, there might be a need to export the path to the library.

export LIBRARY_PATH=$LIBRARY_PATH:/usr/local/opt/openssl/lib/

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