Failed to build gem native extension installing Compass

Question

When I attempt to install the latest version of compass  https   rubygems org gems compass versions 1 0 0 alpha 17   I get the following error   ERROR   Error installing compass  ERROR  Failed to build gem native extension    ERROR   Error installing compass    ERROR  Failed to build gem native extension        System Library Frameworks Ruby framework Versions 2 0 usr bin ruby extconf rb checking for ffi h    no checking for ffi h in  usr local include  usr include ffi    yes checking for ffi call   in -lffi    yes checking for ffi prep closure      yes checking for ffi raw call      no checking for rb thread blocking region      yes checking for rb thread call with gvl      yes checking for rb thread call without gvl      yes checking for ffi prep cif var      no creating extconf h creating Makefile  make  DESTDIR   clean  make  DESTDIR   compiling AbstractMemory c compiling ArrayType c compiling Buffer c compiling Call c Call c 303 5  warning  implicit declaration of function  rb thread call without gvl  is invalid in C99  -Wimplicit-function-declaration      rbffi thread blocking region call blocking function  data   void    -1  NULL           Thread h 78 39  note  expanded from macro  rbffi thread blocking region    define rbffi thread blocking region rb thread call without gvl                                         1 warning generated  compiling ClosurePool c compiling DataConverter c DataConverter c 43 1  warning  control may reach end of non-void function  -Wreturn-type      1 warning generated  compiling DynamicLibrary c compiling ffi c compiling Function c Function c 479 33  warning  incompatible pointer types passing  VALUE  void     to parameter of type  void      void      -Wincompatible-pointer-types          rb thread call with gvl callback with gvl   amp cb                                                     Function c 102 46  note  passing argument to parameter  func  here extern void  rb thread call with gvl void    func  void     void  data1                                                  Function c 563 9  warning  implicit declaration of function  rb thread call without gvl  is invalid in C99  -Wimplicit-function-declaration          rb thread call without gvl async cb wait   amp w  async cb stop   amp w             Function c 738 1  warning  control reaches end of non-void function  -Wreturn-type      3 warnings generated  compiling FunctionInfo c compiling LastError c compiling LongDouble c compiling MappedType c compiling MemoryPointer c compiling MethodHandle c compiling Platform c compiling Pointer c compiling Struct c compiling StructByReference c compiling StructByValue c compiling StructLayout c compiling Thread c compiling Type c compiling Types c compiling Variadic c linking shared-object ffi c bundle clang  error  unknown argument   -multiply definedsuppress   -Wunused-command-line-argument-hard-error-in-future  clang  note  this will be a hard error  cannot be downgraded to a warning  in the future make       ffi c bundle  Error 1  make failed  exit code 2  Gem files will remain installed in  Library Ruby Gems 2 0 0 gems ffi-1 9 3 for inspection  Results logged to  Library Ruby Gems 2 0 0 extensions universal-darwin-13 2 0 0 ffi-1 9 3 gem make out   What s going on here  How do I install the latest compass without error

User · Answer

On yosemite  all you must do is install the command line tools  then it works   Even if other gems installed fine   You must run xcode-select --install  for gem install compass to work   Good luck

User · Answer

You could need to install Apple s Command Line Tools  which probably aren t installed on your system by default  I was getting the same error  but before following any of the instructions here I installed Command Line Tools  due to an unrelated issue  and lo and behold compass installed without issue when I tried again  YMMV

User · Answer

In order to install Compass on Yosemite you need to set up the Ruby environment and to install the Xcode Command Line Tools  But  most important thing  after updating Xcode  be sure to launch the Xcode application and accept the Apple license terms  It will complete the installation of the components  After that  you can install Compass  sudo gem install compass

User · Answer

On Mac OS you need to install this feature    xcode-select --install

User · Answer

I had the same problem on Linux Mint but I was able to fix it by uninstalling ruby and install it again   Uninstall ruby   sudo apt-get remove ruby   It reported some ruby packages like   Package  ruby  is not installed  so not removed The following packages were automatically installed and are no longer required  libruby2 2 ruby-chunky-png ruby-sass rubygems-integration Use  apt-get autoremove  to remove them    Uninstall remaining packages   apt-get autoremove   Install ruby again  sudo apt-get install ruby2 2   Install Compass  sudo gem install compass   The last command was executed with success

User · Answer

Installing Ruby gems on a Mac is a common source of confusion and frustration  Unfortunately  most solutions are incomplete  outdated  and provide bad advice  The answer here with the most votes says to use sudo which you should never need to do  especially if you don t understand what it does  It is correct that the error  quot Failed to build gem native extension quot  is due to the Apple command line tools not being installed  However  installing them won t necessarily provide you with a proper Ruby environment  There are 5 steps to a working Ruby setup  which I ve written about in a lot of detail in my definitive guide to installing Ruby gems on a Mac  It explains why you are getting this error  compares the various solutions  why some are better than others  and why you shouldn t use sudo  TL DR  Use a battle-tested and reliable automated script that will set everything up for you  https   github com monfresh laptop

User · Answer

If you are using Ubuntu  you should try install build-essential  apt install build-essential   I had troubles with gems installation on fresh installation of ubuntu  and this solution worked for me

User · Answer

Hi it was a challenge to get it work on Mac so anyway here is a solution   Install macports Install rvm  Restart Terminal Run rvm requirements then run rvm install 2 1 And last step to run gem install compass --pre   I m not sure but ruby version on Mavericks doesn t support native extensions etc    so if you point to other ruby version like I did  2 1  it works fine

User · Answer

On Mac OS X 10 9  if you try xcode-select --install  you will get the following error       Can t install the software because it is not currently available from   the Software Update server    The solution is to download Command Line Tools  OS X 10 9  directly from Apple website   https   developer apple com downloads index action name for 20Xcode 20-  You will then be able to install the last version of Command Line Tools

User · Answer

For Mac OS  My error was I forgot to select option in XCode - Preferences - Locations - Command Line Tools after new XCode installation  I had 2 versions and later I deleted one   Maybe it will help someone

User · Answer

sudo gem update --system sudo gem install compass

User · Answer

Not sure why none of these are marked as the correct answer  but I landed here through a google search  so I will pass along what I know      paul g s method was pretty close for me  my steps on a Mac osx10 9 Retina    Install macports Install rvm  stable with ruby add --insecure flag for SSL related issues    curl -sSL --insecure https   get rvm io   bash -s stable --ruby Restart Terminal   Resource your profile Run rvm requirements --with-gcc clang You won t have to update Ruby because you downloaded the last stable version And last step to run gem install compass --pre

User · Answer

You can try in Debian with  sudo apt-get install gcc ruby-dev rubygems compass   for Fedora  Centos  yum -y install gcc ruby-devel rubygems compass   It worked for me

User · Answer

I struggled with you same issue for about 3 hours  As of Compass 1 0 alpha19  the requirement is for the rvm version 1 9 3   There are several uncollected posts  however what worked for me was the following     sudo gem uninstall sass sudo gem uninstall compass rvm install ruby-1 9 3-p448 sudo gem install sass --pre sudo gem install compass --pre   and that did it  Hope it works for you as well

User · Answer

Try this  then try to install compass again  sudo apt install ruby-full

User · Answer

For macOS 10 14 Mojave  make sure you have already installed command line tools via xcode-select --install and the run the following command to install std headers   sudo open  Library Developer CommandLineTools Packages macOS SDK headers for macOS 10 14 pkg   Now try your command again

User · Answer

Try this  then try to install compass again  apt-get install ruby-dev

User · Answer

In ubuntu 14 04  while execute apt-get install rubygems  there is a error     E  Package  rubygems  has no installation candidate   follow command solve the problems      sudo apt-get install gcc ruby-devel  rubygems-integration ruby-compass

User · Answer

when      gem install overcommit   is run  also this error have been placed in terminal    Failed to build gem native extension   please do the same   xcode-select --install   and it will fix that issue too

User · Answer

In order to install compass On Mac OS X 10 10  Yosemite had to perform the following   1  Set Up Ruby Environment   Ensure ruby is installed and up to date  ruby -v Update gem s sudo gem update --system   2  Set Up MAC Environment  Install the Xcode Command Line Tools this is the key to install Compass    xcode-select --install   Installing the Xcode Command Line Tools are the key to getting Compass working on OS X  3  Install Compass  sudo gem install compass

User · Answer

you must have gcc json pure  i collect some information from several post    x000D   x000D  sudo gem uninstall sass x000D  sudo gem uninstall compass x000D  sudo gem update --system x000D  gem install json pure    if you have already have continued to next step  x000D  sudo yum install gcc gcc-c      if you have already have continued to next step  x000D  sudo gem install sass x000D   x000D  sudo gem install compass x000D   x000D   x000D    Hi if    sudo gem update --system    not working you got an error in the update then  use  sudo gem update --system 2 7 8

User · Answer

Try brew install coreutils   I ve hit this problem while rebuilding an aging sass compass project that was recently updated to ruby 2 2 5 by a colleague  The project uses rvm and bundler    These were my commands     rvm install ruby-2 2 5   rvm use ruby-2 2 5   gem install bundler   bundle install   This caused me to hit the famed ffi installation errors  that are reported around the StackOverflow environment    An error occurred while installing ffi  1 9 14   and Bundler cannot continue    Most of the suggestions to solve this problem are to install Xcode command line tools  However this was already installed in my environment     xcode-select -p  Library Developer CommandLineTools   Other suggestions said to install gcc    so I tried     brew install gcc46   But this also failed due to a segmentation fault                  So  I then tried installing compass by hand  just to see if it would give the same ffi error     gem install compass   But to my surprise  I got a totally different error   make   usr local bin gmkdir  No such file or directory   So I searched for that issue  and found this ancient blog post that said to install coreutils     brew install coreutils   After installing coreutils with Homebrew  bundler was able to finish and installed compass and dependencies successfully   The End

User · Answer

For me to solve this issue  I had to make sure I had the most current version of Ruby and the gems gem update --system  then  I had to make sure that Xcode  amp  the Command Line Tools were installed  xcode-select --install

User · Answer

The best way is sudo apt-get install ruby-compass to install compass

[ruby] Failed to build gem native extension (installing Compass)

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