安装packet-fu时无法安装pcaprub的问题求助

已完成操作 #

已成功执行以下命令：

apt-get install ruby-dev
apt-get install libpcap-dev

遇到的问题 #

执行gem install -r pcaprub时，出现原生扩展编译失败的错误，完整错误日志如下：

# gem install pcaprub
Building native extensions. This could take a while...
ERROR:  Error installing pcaprub:
        ERROR: Failed to build gem native extension.

    current directory: /var/lib/gems/2.7.0/gems/pcaprub-0.13.1/ext/pcaprub_c
/usr/bin/ruby2.7 -I /usr/lib/ruby/vendor_ruby -r ./siteconf20230625-212902-9pqf73.rb extconf.rb

[*] Running checks for pcaprub_c code...
platform is x86_64-linux-gnu
checking for ruby/thread.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=/usr/bin/$(RUBY_BASE_NAME)2.7
        --with-pcap-dir
        --without-pcap-dir
        --with-pcap-include
        --without-pcap-include=${pcap-dir}/include
        --with-pcap-lib
        --without-pcap-lib=${pcap-dir}/lib
        --with-ruby-dir
        --without-ruby-dir
        --with-ruby-include
        --without-ruby-include=${ruby-dir}/include
        --with-ruby-lib
        --without-ruby-lib=${ruby-dir}/lib
/usr/lib/ruby/2.7.0/mkmf.rb:471:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
        from /usr/lib/ruby/2.7.0/mkmf.rb:613:in `try_cpp'
        from /usr/lib/ruby/2.7.0/mkmf.rb:1124:in `block in have_header'
        from /usr/lib/ruby/2.7.0/mkmf.rb:971:in `block in checking_for'
        from /usr/lib/ruby/2.7.0/mkmf.rb:361:in `block (2 levels) in postpone'
        from /usr/lib/ruby/2.7.0/mkmf.rb:331:in `open'
        from /usr/lib/ruby/2.7.0/mkmf.rb:361:in `block in postpone'
        from /usr/lib/ruby/2.7.0/mkmf.rb:331:in `open'
        from /usr/lib/ruby/2.7.0/mkmf.rb:357:in `postpone'
        from /usr/lib/ruby/2.7.0/mkmf.rb:970:in `checking_for'
        from /usr/lib/ruby/2.7.0/mkmf.rb:1123:in `have_header'
        from extconf.rb:82:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /var/lib/gems/2.7.0/extensions/x86_64-linux/2.7.0/pcaprub-0.13.1/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.7.0/gems/pcaprub-0.13.1 for inspection.
Results logged to /var/lib/gems/2.7.0/extensions/x86_64-linux/2.7.0/pcaprub-0.13.1/gem_make.out

解决方向 #

• 安装基础编译工具：错误日志明确提示需要开发工具，执行以下命令：

  apt-get install build-essential
  

• 安装完整Ruby开发环境：ruby-dev可能依赖不全，尝试安装ruby-full确保头文件和依赖完整：

  apt-get install ruby-full
  

• 指定libpcap路径安装pcaprub：如果libpcap的路径未被自动识别，手动指定路径：

  gem install pcaprub --with-pcap-include=/usr/include --with-pcap-lib=/usr/lib/x86_64-linux-gnu
  

• 尝试兼容版本的pcaprub：pcaprub 0.13.1可能与Ruby 2.7存在兼容性问题，降级到0.12.4版本尝试：

  gem install pcaprub -v 0.12.4
  

• 查看详细编译日志：mkmf.log会记录具体失败原因，执行以下命令查看并补充对应依赖：

  cat /var/lib/gems/2.7.0/extensions/x86_64-linux/2.7.0/pcaprub-0.13.1/mkmf.log
  

• 直接安装packet-fu：无需单独安装pcaprub，packet-fu会自动处理依赖：

  gem install packet-fu
  

内容的提问来源于stack exchange，提问作者Teererai Marange