宝石安装指南针不起作用 [英] gem install compass not working

问题描述

无法在终端中运行gem install compass命令行。它返回以下错误。是否有人能够帮助解决这个问题？

having trouble running the line gem install compass in terminal. It's returning the following error. Is anyone able to help out with this problem?

错误：安装指南针时出错：
错误：无法构建gem原生扩展。

ERROR: Error installing compass: ERROR: Failed to build gem native extension.

    /usr/local/rvm/rubies/ruby-1.9.3-p392/bin/ruby -r ./siteconf20150225-51908-cfetpz.rb 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=/usr/local/rvm/rubies/ruby-1.9.3-p392/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}/lib
  --with-libffi-config
  --without-libffi-config
  --with-pkg-config
  --without-pkg-config
/usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:381:in

try_do'：编译器无法生成可执行文件。
（RuntimeError）
您必须先安装开发工具。
from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:506:in
try_cpp' $ / b / b来自/usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:931:in
block has_header '从/usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:790:in
块
in checking_for'
from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:284:in
块（2级）推迟'
from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:254:in
打开'
from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:284:in
阻止推迟'
from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:254:in
打开'
from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:280:in
从/usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby推迟
y / 1.9.1 / mkmf.rb：789：in
checking_for'
from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ ruby / 1.9.1 / mkmf.rb：930：in
have_header'
from extconf.rb：16：in '

try_do': The compiler failed to generate an executable file. (RuntimeError) You have to install development tools first. from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:506:in try_cpp' from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:931:in block in have_header' from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:790:in block in checking_for' from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:284:in block (2 levels) in postpone' from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:254:in open' from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:284:in block in postpone' from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:254:in open' from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:280:in postpone' from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:789:in checking_for' from /usr/local/rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/mkmf.rb:930:in have_header' from extconf.rb:16:in'

extconf failed, exit code 1

Gem files will remain installed in /usr/local/rvm/gems/ruby-1.9.3-p392/gems/ffi-1.9.6 for inspection.
Results logged to /usr/local/rvm/gems/ruby-1.9.3-p392/extensions/x86_64-darwin-10/1.9.1-static/ffi-1.9.6/gem_make.out

推荐答案

是

The error you're getting is

(RuntimeError)
   You have to install development tools first.

如果您使用的是OS X（我最好从输出中猜出），您需要安装Xcode开发人员工具。您可以使用以下命令执行此操作： xcode-select --install 。

If you're on OS X (my best guess from the output) you need to install the Xcode developer tools first. You can do this with the command: xcode-select --install.

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