無法在Windows 8.1版本的Ruby 2.1.5

Question

我使用Ruby 2.1.5安裝mysql-2.9.1.gem和休息的細節

*當地的寶石*

的BigDecimal（1.2 0.4） IO-控制檯（0.4.2） JSON（1.8.1） MINITEST（4.7.5） MySQL的（2.8.1 x86的的mingw32） 迷幻（2.0.5） 耙（10.1.0） rdoc（4.1.0） 測試單元（2.1.5.0）

，當我安裝MySQL-2.9.1.gem它如下給人一種錯誤::

Building native extensions. This could take a while... 
ERROR: Error installing mysql-2.9.1.gem: 
     ERROR: Failed to build gem native extension. 

    C:/Ruby21-x64/bin/ruby.exe extconf.rb 
checking for main() in -llibmysql... *** 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:/Ruby21-x64/bin/ruby 
     --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-libmysqllib 
     --without-libmysqllib 
C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:456:in `try_do': The compiler failed to gen 
erate an executable file. (RuntimeError) 
You have to install development tools first. 
     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:541:in `try_link0' 
     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:556:in `try_link' 
     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:742:in `try_func' 
     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:973:in `block in have_library' 

     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:918:in `block in checking_for' 

     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:351:in `block (2 levels) in po 
stpone' 
     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:321:in `open' 
     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:351:in `block in postpone' 
     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:321:in `open' 
     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:347:in `postpone' 
     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:917:in `checking_for' 
     from C:/Ruby21-x64/lib/ruby/2.1.0/mkmf.rb:968:in `have_library' 
     from extconf.rb:27:in `<main>' 

extconf failed, exit code 1 

Gem files will remain installed in C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/mysql- 
2.9.1 for inspection. 
Results logged to C:/Ruby21-x64/lib/ruby/gems/2.1.0/extensions/x64-mingw32/2.1.0 
/mysql-2.9.1/gem_make.out 

D:\Softwares> 

Answer 1

當我安裝MySQL寶石我也有這個問題。也許this可以提供幫助。