尽管使用`gem install ...'命令进行安装，但mysql2 gem在捆绑安装中失败。

Question

这是我的proj

中的日志

bundle install

所以我按照它说的做，然后运行Fetching mysql2 0.5.2 Installing mysql2 0.5.2 with native extensions Gem::Ext::BuildError: ERROR: Failed to build gem native extension. ... ... ... Cannot find mysql_config at /usr/local/opt/mysql@5.6/bin/mysql_config --with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/include ----- *** 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 --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/Users/admin/.asdf/installs/ruby/2.6.3/bin/$(RUBY_BASE_NAME) --with-mysql-dir --without-mysql-dir --with-mysql-include --without-mysql-include=${mysql-dir}/include --with-mysql-lib --without-mysql-lib=${mysql-dir}/lib --with-mysql-config To see why this extension failed to compile, please check the mkmf.log which can be found here: /Users/admin/development/locari/vendor/bundle/ruby/2.6.0/extensions/x86_64-darwin-18/2.6.0-static/mysql2-0.5.2/mkmf.log extconf failed, exit code 1 Gem files will remain installed in /Users/admin/development/locari/vendor/bundle/ruby/2.6.0/gems/mysql2-0.5.2 for inspection. Results logged to /Users/admin/development/locari/vendor/bundle/ruby/2.6.0/extensions/x86_64-darwin-18/2.6.0-static/mysql2-0.5.2/gem_make.out An error occurred while installing mysql2 (0.5.2), and Bundler cannot continue. Make sure that `gem install mysql2 -v '0.5.2' --source 'https://rubygems.org/'` succeeds before bundling.

sudo gem install mysql2 -v '0.5.2' --source

它安装得很好！但是，当我再次运行$ sudo gem install mysql2 -v '0.5.2' --source 'https://rubygems.org/' Building native extensions. This could take a while... Successfully installed mysql2-0.5.2 Parsing documentation for mysql2-0.5.2 Done installing documentation for mysql2 after 0 seconds 1 gem installed 时，会遇到相同的错误。我尝试在brew中卸载，取消链接并重新安装bundle install。

接下来我可以尝试什么？

Answer 1

我找到了答案。我需要先运行这些命令，然后才能运行：

bundle config --local build.mysql2 "--with-cppflags=-I/usr/local/opt/openssl/include"

bundle config --local build.mysql2 "--with-ldflags=-L/usr/local/opt/openssl/lib"

然后当我运行bundle install时，它终于起作用了

Answer 2

将构建选项与bundler一起使用。

尝试在您的应用程序目录中运行它：

bundle config --local build.mysql2 "--with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/include"

这仅针对您的应用程序进行设置，如果其他人需要类似的配置，则可以方便地检查您的存储库。但是您也可以在计算机上进行全局配置，方法是将--local替换为--global，它将应用于用户帐户中的所有bundle install命令。

更新

这实际上并没有为我工作，但我会把它留在这里，因为它应该有效。我基本上只需要跑步：

gem install mysql2 -v '0.5.3' -- --with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/include

即使设置此构建配置也应该这样做，而不是使用捆绑程序。