在Windows 8上安裝Watir時出錯12

Question

嗨我正在嘗試安裝watir。我安裝了Ruby並更新了RubyGem管理器。當我嘗試安裝watir（Windows 8 64bit）時，出現以下錯誤：

C:\devkit>gem install watir 
Temporarily enhancing PATH to include DevKit... 
Building native extensions. This could take a while... 
ERROR: Error installing watir: 
     ERROR: Failed to build gem native extension. 

    C:/Ruby200-x64/bin/ruby.exe extconf.rb 
checking for ffi.h... *** 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:/Ruby200-x64/bin/ruby 
     --with-ffi_c-dir 
     --without-ffi_c-dir 
     --with-ffi_c-include 
     --without-ffi_c-include=${ffi_c-dir}/include 
     --with-ffi_c-lib 
     --without-ffi_c-lib=${ffi_c-dir}/ 
     --with-libffi-config 
     --without-libffi-config 
     --with-pkg-config 
     --without-pkg-config 
C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:431:in `try_do': The compiler failed to generate an executable 
file. (RuntimeError) 
You have to install development tools first. 
     from C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:562:in `try_cpp' 
     from C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:1041:in `block in have_header' 
     from C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:892:in `block in checking_for' 
     from C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:337:in `block (2 levels) in postpone' 
     from C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:307:in `open' 
     from C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:337:in `block in postpone' 
     from C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:307:in `open' 
     from C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:333:in `postpone' 
     from C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:891:in `checking_for' 
     from C:/Ruby200-x64/lib/ruby/2.0.0/mkmf.rb:1040:in `have_header' 
     from extconf.rb:16:in `<main>' 


Gem files will remain installed in C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/ffi-1.8.1 for inspection. 

Results logged to C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/ffi-1.8.1/ext/ffi_c/gem_make.out 

Answer 1

您是否擁有正確版本的devkit？看起來像你需要Ruby 2.0.0 x64 (64bits): mingw64-64-4.7.2從http://rubyinstaller.org/downloads/