在 Ruby 2.4.2 上安装带有本机扩展的 ffi 1.9.21，Ubuntu 17.10 失败

Question

ffi gem 1.9.21 安装成功。 我也尝试运行这些命令，但没有成功。

sudo apt install libffi-dev
gem inst ffi

当我部署到 AWS 时出现此错误。错误看起来像这样。

Installing dotenv 2.2.1
Installing request_store 1.3.2
Installing draper 3.0.1

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

/opt/rubies/ruby-2.2.3/bin/ruby -r ./siteconf20180207-2245-1bjhja4.rb extconf.rb
checking for ffi.h... no
checking for ffi.h in /usr/local/include,/usr/include/ffi... no
checking for shlwapi.h... no
checking for rb_thread_blocking_region()... no
checking for rb_thread_call_with_gvl()... yes
checking for rb_thread_call_without_gvl()... yes
creating extconf.h
creating Makefile

  make "DESTDIR=" clean

make "DESTDIR="
Running autoreconf for libffi
/var/app/ondeck/vendor/bundle/gems/ffi-1.9.21/ext/ffi_c/libffi/autogen.sh: line 2: exec: autoreconf: not found
make: *** ["/var/app/ondeck/vendor/bundle/gems/ffi-1.9.21/ext/ffi_c/libffi-x86_64-linux"/.libs/libffi_convenience.a] Error 127

make failed, exit code 2

Gem files will remain installed in /var/app/ondeck/vendor/bundle/gems/ffi-1.9.21 for inspection.
Results logged to /var/app/ondeck/vendor/bundle/extensions/x86_64-linux/2.2.0-static/ffi-1.9.21/gem_make.out
An error occurred while installing ffi (1.9.21), and Bundler cannot continue.
Make sure that `gem install ffi -v '1.9.21'` succeeds before bundling. (Executor::NonZeroExitStatus)

任何帮助将不胜感激。提前致谢。

Answer 1

似乎这个问题是由于ffi最新版本，我在Gemfile中指定了ffi最旧版本gem 'ffi', '1.9.18'在控制台运行bundle install，它解决了我的问题。

Answer 2

如a comment on a relevant issue 中所述，解决方法是：

sudo apt install libffi-dev

Answer 3

在您的服务器中执行此操作

sudo apt-get install ruby-dev

参考：Registered issue

如果这不起作用，请告诉我。