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Development Tools Installing a Ruby Development Environment Installing a Ruby Development Environment Installing Ruby on Mac

Miha Vičič
Miha Vičič
10,262 Points
Posted by Miha Vičič
Miha Vičič
10,262 Points

Problems with installing rails

Hello! I'm struggling with the last step of setting up rails. When I try to install the rail gem I get the following error: Building native extensions. This could take a while... ERROR: Error installing rails: ERROR: Failed to build gem native extension.

/Users/vicic/.rbenv/versions/2.2.0/bin/ruby -r ./siteconf20150119-78332-aigbdm.rb extconf.rb

checking if the C compiler accepts ... yes checking if the C compiler accepts -Wno-error=unused-command-line-argument-hard-error-in-future... no

Building nokogiri using packaged libraries.

The file "/usr/include/iconv.h" is missing in your build environment, which means you haven't installed Xcode Command Line Tools properly.

To install Command Line Tools, try running xcode-select --install on terminal and follow the instructions. If it fails, open Xcode.app, select from the menu "Xcode" - "Open Developer Tool" - "More Developer Tools" to open the developer site, download the installer for your OS

version and run it.

*** 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/vicic/.rbenv/versions/2.2.0/bin/$(RUBY_BASE_NAME) --help --clean --use-system-libraries --enable-static --disable-static --with-zlib-dir --without-zlib-dir --with-zlib-include --without-zlib-include=${zlib-dir}/include --with-zlib-lib --without-zlib-lib=${zlib-dir}/lib --enable-cross-build --disable-cross-build

extconf failed, exit code 1

Gem files will remain installed in /Users/vicic/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.5 for inspection. Results logged to /Users/vicic/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-14/2.2.0-static/nokogiri-1.6.5/gem_make.out

1 Answer

Shani Rivers
Shani Rivers
14,920 Points
Shani Rivers
Shani Rivers
14,920 Points

Hi Miha, have you tried installing the Xcode command line tools as suggested in the error message and then retrying the install?

 xcode-select --install
Steve Long
Steve Long
21,054 Points

it helps! thank you so much!!!

Shani Rivers
Shani Rivers
14,920 Points

No problem!