ennas-MacBook-Pro：all_tests jholland $ sudo gem install selenium-webdriver 构建原生扩展。这可能需要一段时间...... 错误：安装selenium-webdriver时出错： 错误：无法构建gem原生扩展。
/Users/jholland/.rvm/rubies/ruby-2.0.0-p451/bin/ruby 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=/Users/jholland/.rvm/rubies/ruby-2.0.0-p451/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
/Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:434:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from /Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:565:in `try_cpp'
from /Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:1044:in `block in have_header'
from /Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:895:in `block in checking_for'
from /Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:340:in `block (2 levels) in postpone'
from /Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:310:in `open'
from /Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:340:in `block in postpone'
from /Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:310:in `open'
from /Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:336:in `postpone'
from /Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:894:in `checking_for'
from /Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/2.0.0/mkmf.rb:1043:in `have_header'
from extconf.rb:16:in `<main>'
extconf failed, exit code 1
Gem文件将保留在/Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/gems/2.0.0/gems/ffi-1.9.3中进行检查。 结果记录到/Users/jholland/.rvm/rubies/ruby-2.0.0-p451/lib/ruby/gems/2.0.0/extensions/x86_64-darwin-12/2.0.0-static/ffi-1.9.3 /gem_make.out
我正在使用Mac Mavericks 10.9.1并且我已将ruby更新为2.0.0 P451 v。我现在被卡住了