我是RoR应用程序的新手，我想安装arachni，但当我启动"gem-install-arachin"时，它会显示错误，如下所示
/home/crystal103/.rvm/rubies/ruby-1.9.2-p290/bin/gem:4: warning: Insecure world writable dir /opt in PATH, mode 040777
Building native extensions. This could take a while...
ERROR: Error installing arachni:
ERROR: Failed to build gem native extension.
/home/crystal103/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb
checking for curl/curl.h in /opt/local/include,/opt/local/include/curl,/home/crystal103/.rvm/rubies/ruby-1.9.2- p290/include/curl,/home/crystal103/.rvm/rubies/ruby-1.9.2- p290/include,/usr/include/curl,/usr/local/include/curl... no
need libcurl
*** 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
--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=/home/crystal103/.rvm/rubies/ruby-1.9.2-p290/bin/ruby
Gem files will remain installed in /home/crystal103/.rvm/gems/ruby-1.9.2- p290/gems/typhoeus-0.3.3 for inspection.
Results logged to /home/crystal103/.rvm/gems/ruby-1.9.2-p290/gems/typhoeus- 0.3.3/ext/typhoeus/gem_make.out
这让我疯狂了一整天，但却无法解决……请帮助
您需要在系统中安装带有开发文件（包括*.h）的libcurl。