安装watir过程中报错怎么处理？ERROR: Failed to build gem native extension

mallybel

C:\Documents and Settings\Administrator>gem install watir
Fetching: win32-api-1.4.8-x86-mingw32.gem (100%)
Fetching: windows-api-0.4.1.gem (100%)
Fetching: windows-pr-1.2.1.gem (100%)
Fetching: win32-process-0.6.5.gem (100%)
Fetching: nokogiri-1.5.0-x86-mingw32.gem (100%)
Fetching: ffi-1.0.11.gem (100%)
Building native extensions.  This could take a while...
ERROR:  Error installing watir:
        ERROR: Failed to build gem native extension.

        d:/Ruby191/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=d:/Ruby191/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}/lib
        --with-libffi-config
        --without-libffi-config
        --with-pkg-config
        --without-pkg-config
d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:364:in `try_do': The complier failed to generate an executable file. (RuntimeErro
You have to install development tools first.
        from d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:433:in `try_cpp'
        from d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:811:in `block in have_header'
        from d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:670:in `block in checking_for'
        from d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:276:in `block (2 levels) in postpone'
        from d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:250:in `open'
        from d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:276:in `block in postpone'
        from d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:250:in `open'
        from d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:272:in `postpone'
        from d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:669:in `checking_for'
        from d:/Ruby191/lib/ruby/1.9.1/mkmf.rb:810:in `have_header'
        from extconf.rb:9:in `<main>'


Gem files will remain installed in d:/Ruby191/lib/ruby/gems/1.9.1/gems/ffi-1.0.11 for inspection.
Results logged to d:/Ruby191/lib/ruby/gems/1.9.1/gems/ffi-1.0.11/ext/ffi_c/gem_make.out

LUCIEN06

LZ找到解决办法了吗？ 我也遇到了同样的问题。。。

mallybel

网上说不用管。目前看来能用