【发布时间】：2021-05-05 21:40:52
【问题描述】：
我正在尝试安装 mysql2 gem，以便可以结合使用 ruby 和 mysql 浏览 mysql 数据库。我在终端输入：gem install mysql2 - 它做到了：
lr>gem install mysql2
Temporarily enhancing PATH for MSYS/MINGW...
Using msys2 packages: mingw-w64-x86_64-libmariadbclient
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
current directory: C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mysql2-0.5.3/ext/mysql2
C:/Ruby30-x64/bin/ruby.exe -I C:/Ruby30-x64/lib/ruby/3.0.0 -r ./siteconf20210201-7628-g2k8zu.rb extconf.rb
checking for rb_absint_size()... yes
checking for rb_absint_singlebit_p()... yes
checking for rb_wait_for_single_fd()... yes
*** 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=C:/Ruby30-x64/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=${mysql-dir}/lib
--with-mysql-config
--without-mysql-config
--with-mysqlclient-dir
--without-mysqlclient-dir
--with-mysqlclient-include
--without-mysqlclient-include=${mysqlclient-dir}/include
--with-mysqlclient-lib
--without-mysqlclient-lib=${mysqlclient-dir}/lib
--with-mysqlclientlib
--without-mysqlclientlib
C:/Ruby30-x64/lib/ruby/3.0.0/mkmf.rb:1050:in `block in find_library': undefined method `split' for nil:NilClass (NoMethodError)
from C:/Ruby30-x64/lib/ruby/3.0.0/mkmf.rb:1050:in `collect'
from C:/Ruby30-x64/lib/ruby/3.0.0/mkmf.rb:1050:in `find_library'
from extconf.rb:87:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
C:/Ruby30-x64/lib/ruby/gems/3.0.0/extensions/x64-mingw32/3.0.0/mysql2-0.5.3/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/mysql2-0.5.3 for inspection.
Results logged to C:/Ruby30-x64/lib/ruby/gems/3.0.0/extensions/x64-mingw32/3.0.0/mysql2-0.5.3/gem_make.out
如果有人给我一个解决这个问题的方法，这会有所帮助。如果我找到解决方案，我会在这里发布。谢谢！
【问题讨论】：
-
是的，让 mysql2 在 Windows 上工作是我转向 linux 的主要原因。我现在是一个快乐的人，强烈推荐！