mysql2 gem在捆绑包安装上失败，尽管使用`gem install...`命令进行安装
这是我的bundle install中的日志
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.所以我照它说的做，然后运行sudo gem install mysql2 -v '0.5.2' --source
$ 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而且它安装得很好！但是当我再次运行bundle install时，我得到了同样的错误。我尝试过在brew中卸载、取消链接和重新安装mysql。
下一步我可以尝试什么？
回答 3
Stack Overflow用户
发布于 2019-06-27 17:27:15
首先运行以下命令：
bundle config --local build.mysql2 "--with-cppflags=-I/usr/local/opt/openssl/include --with-ldflags=-L/usr/local/opt/openssl/lib"
然后运行bundle install，它可以工作。
Stack Overflow用户
发布于 2021-08-28 19:55:36
在M1 macs上安装
这个方法对我在ruby v2.7.2和macOS Big Sur 11.4上很有帮助。
安装依赖项
brew install mysql zstd openssl安装gem
gem install mysql2 -- --with-ldflags="-L $(brew --cellar zstd)/1.5.0/lib -L $(brew --prefix openssl)/lib" --with-ldlibs="-lzstd -lssl" --with-cppflags="-I $(brew --prefix openssl)/include"作为替代方案，您可以修改bundler配置：
bundle config --local build.mysql2 --with-ldflags="-L $(brew --cellar zstd)/1.5.0/lib -L $(brew --prefix openssl)/lib" --with-ldlibs="-lzstd -lssl" --with-cppflags="-I $(brew --prefix openssl)/include"然后运行bundle install。
Stack Overflow用户
发布于 2020-09-09 09:51:49
对bundler使用构建选项。
尝试在您的应用程序目录中运行此命令：
bundle config --local build.mysql2 "--with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/include"这只为您的应用程序设置了它，如果其他人需要类似的配置，这可以方便地签入到您的存储库中。但您也可以通过用--global替换--local来使它成为您计算机上的全局配置，它将应用于您用户帐户上的所有bundle install命令。
更新
这实际上并没有对我起作用，但我将把它留在这里，因为它应该起作用。我基本上只能跑了：
gem install mysql2 -v '0.5.3' -- --with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/include而不是使用bundler，即使设置此构建配置应该可以做到这一点。
https://stackoverflow.com/questions/56786993
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