Ruby on rails 在安装gemcloudinary（rails6和ruby-v2.6.3）时未能构建gem本机扩展
当我尝试运行Ruby on rails 在安装gemcloudinary（rails6和ruby-v2.6.3）时未能构建gem本机扩展,ruby-on-rails,rubygems,Ruby On Rails,Rubygems,当我尝试运行bundle安装时如果我尝试gem安装unf_ext-v“0.0.7.6”-source，我会收到此消息事件https://rubygems.org/“ Installing unf_ext 0.0.7.6 with native extensions Gem::Ext::BuildError: ERROR: Failed to build gem native extension. current directory: /Users/led8/.rbenv/version
bundle安装时gem安装unf_ext-v“0.0.7.6”-source，我会收到此消息事件https://rubygems.org/“Installing unf_ext 0.0.7.6 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory: /Users/led8/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/unf_ext-0.0.7.6/ext/unf_ext
/Users/led8/.rbenv/versions/2.6.3/bin/ruby -I /Users/led8/.rbenv/versions/2.6.3/lib/ruby/site_ruby/2.6.0 -r
./siteconf20200324-15298-1o69dfm.rb extconf.rb
checking for -lstdc++... *** 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/led8/.rbenv/versions/2.6.3/bin/$(RUBY_BASE_NAME)
--with-static-libstdc++
--without-static-libstdc++
--with-stdc++lib
--without-stdc++lib
/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:467:in `try_do': The compiler failed to generate an executable file.
(RuntimeError)
You have to install development tools first.
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:552:in `try_link0'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:570:in `try_link'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:789:in `try_func'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:1016:in `block in have_library'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:959:in `block in checking_for'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:361:in `block (2 levels) in postpone'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:331:in `open'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:361:in `block in postpone'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:331:in `open'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:357:in `postpone'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:958:in `checking_for'
from /Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:1011:in `have_library'
from extconf.rb:6:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/led8/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/extensions/x86_64-darwin-18/2.6.0-static/unf_ext-0.0.7.6/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /Users/led8/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/unf_ext-0.0.7.6 for inspection.
Results logged to
/Users/led8/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/extensions/x86_64-darwin-18/2.6.0-static/unf_ext-0.0.7.6/gem_make.out
An error occurred while installing unf_ext (0.0.7.6), and Bundler cannot continue.
Make sure that `gem install unf_ext -v '0.0.7.6' --source 'https://rubygems.org/'` succeeds before bundling.
In Gemfile:
cloudinary was resolved to 1.13.2, which depends on
rest-client was resolved to 2.1.0, which depends on
http-cookie was resolved to 1.0.3, which depends on
domain_name was resolved to 0.5.20190701, which depends on
unf was resolved to 0.1.4, which depends on
unf_ext````
使用本机扩展安装unf_ext 0.0.7.6
Gem:：Ext:：BuildError:错误：无法生成Gem本机扩展。
当前目录：/Users/led8/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/unf_ext-0.0.7.6/ext/unf_ext
/Users/led8/.rbenv/versions/2.6.3/bin/ruby-I/Users/led8/.rbenv/versions/2.6.3/lib/ruby/site_ruby/2.6.0-r
./siteconf20200324-15298-1o69dfm.rb extconf.rb
正在检查-lstdc++…***extconf.rb失败***
由于某些原因无法创建Makefile，可能缺少必要的
库和/或标题。有关详细信息，请查看mkmf.log文件。你可以
需要配置选项。
提供的配置选项：
--使用opt dir
--不带opt dir
--选择包含
--不带opt include=${opt dir}/include
--使用opt lib
--不带opt lib=${opt dir}/lib
--用make prog
--没有make prog
--srcdir=。
--库尔迪尔
--ruby=/Users/led8/.rbenv/versions/2.6.3/bin/$（ruby\u BASE\u NAME）
--使用静态libstdc++
--无静态libstdc++
--使用stdc++lib
--没有stdc++lib
/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:467:在“try_do”中：编译器未能生成可执行文件。
（运行时错误）
您必须首先安装开发工具。
from/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:552:in'try_link0'
from/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:570:in'try_link'
from/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:789:in'try_func'
from/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:1016:in'block in have_library'
from/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:959:in'block in checking_'
from/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:361:in“延迟中的块（2个级别）”中
from/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:331:in'open'
from/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:361:“延迟中的块”中
from/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:331:in'open'
from/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:357:in“推迟”
来自/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:958:in“checking_for”
从/Users/led8/.rbenv/versions/2.6.3/lib/ruby/2.6.0/mkmf.rb:1011:in'have_library'
来自extconf.rb:6:in`'
要了解此扩展未能编译的原因，请检查mkmf.log，该日志可在此处找到：
/Users/led8/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/extensions/x86_64-darwin-18/2.6.0-static/unf_ext-0.0.7.6/mkmf.log
extconf失败，退出代码1
Gem文件仍将安装在/Users/led8/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/unf_ext-0.0.7.6中供检查。
结果记录到
/Users/led8/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/extensions/x86_64-darwin-18/2.6.0-static/unf_ext-0.0.7.6/gem_make.out
安装unf_ext（0.0.7.6）时出错，捆绑程序无法继续。
确保'gem install unf_ext-v'0.0.7.6'--source'https://rubygems.org/“`捆绑前成功。
在文件中：
cloudinary解析为1.13.2，这取决于
rest客户端已解析为2.1.0，这取决于
http cookie解析为1.0.3，这取决于
域名解析为0.5.20190701，这取决于
unf解析为0.1.4，这取决于
unf_分机````