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Je suis en train d'installer Rails sur mon système en utilisant:Comment désinstaller Nokogiri
gem install rails
Mais je suis arrivé cette erreur:
Sams-MacBook-Pro-2:/ sammy$ gem install rails
Building native extensions. This could take a while...
ERROR: Error installing rails:
ERROR: Failed to build gem native extension.
current directory: /Users/sammy/.rvm/gems/ruby-2.4.1/gems/nokogiri-1.8.0/ext/nokogiri
/Users/sammy/.rvm/rubies/ruby-2.4.1/bin/ruby -r ./siteconf20170716-20185-7bepnp.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.
Using mini_portile version 2.2.0
checking for iconv.h... yes
checking for gzdopen() in -lz... yes
checking for iconv using --with-opt-* flags... yes
************************************************************************
IMPORTANT NOTICE:
Building Nokogiri with a packaged version of libxml2-2.9.4
with the following patches applied:
- 0001-Fix-comparison-with-root-node-in-xmlXPathCmpNodes.patch
- 0002-Fix-XPointer-paths-beginning-with-range-to.patch
- 0003-Disallow-namespace-nodes-in-XPointer-ranges.patch
Team Nokogiri will keep on doing their best to provide security
updates in a timely manner, but if this is a concern for you and want
to use the system library instead; abort this installation process and
reinstall nokogiri as follows:
gem install nokogiri -- --use-system-libraries
[--with-xml2-config=/path/to/xml2-config]
[--with-xslt-config=/path/to/xslt-config]
If you are using Bundler, tell it to use the option:
bundle config build.nokogiri --use-system-libraries
bundle install
Note, however, that nokogiri is not fully compatible with arbitrary
versions of libxml2 provided by OS/package vendors.
************************************************************************
Extracting libxml2-2.9.4.tar.gz into tmp/x86_64-apple-darwin16.0.0/ports/libxml2/2.9.4... OK
Running git apply with /Users/sammy/.rvm/gems/ruby-2.4.1/gems/nokogiri-1.8.0/patches/libxml2/0001-Fix-comparison-with-root-node-in-xmlXPathCmpNodes.patch... OK
Running git apply with /Users/sammy/.rvm/gems/ruby-2.4.1/gems/nokogiri-1.8.0/patches/libxml2/0002-Fix-XPointer-paths-beginning-with-range-to.patch... OK
Running git apply with /Users/sammy/.rvm/gems/ruby-2.4.1/gems/nokogiri-1.8.0/patches/libxml2/0003-Disallow-namespace-nodes-in-XPointer-ranges.patch... OK
Running 'configure' for libxml2 2.9.4... OK
Running 'compile' for libxml2 2.9.4... ERROR, review '/Users/sammy/.rvm/gems/ruby-2.4.1/gems/nokogiri-1.8.0/ext/nokogiri/tmp/x86_64-apple-darwin16.0.0/ports/libxml2/2.9.4/compile.log' to see what happened. Last lines are:
========================================================================
unsigned short* in = (unsigned short*) inb;
^~~~~~~~~~~~~~~~~~~~~
encoding.c:815:27: warning: cast from 'unsigned char *' to 'unsigned short *' increases required alignment from 1 to 2 [-Wcast-align]
unsigned short* out = (unsigned short*) outb;
^~~~~~~~~~~~~~~~~~~~~~
4 warnings generated.
CC error.lo
CC parserInternals.lo
CC parser.lo
CC tree.lo
CC hash.lo
CC list.lo
CC xmlIO.lo
xmlIO.c:1450:52: error: use of undeclared identifier 'LZMA_OK'
ret = (__libxml2_xzclose((xzFile) context) == LZMA_OK) ? 0 : -1;
^
1 error generated.
make[2]: *** [xmlIO.lo] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2
========================================================================
*** 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
--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/sammy/.rvm/rubies/ruby-2.4.1/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
/Users/sammy/.rvm/rubies/ruby-2.4.1/lib/ruby/gems/2.4.0/gems/mini_portile2-2.2.0/lib/mini_portile2/mini_portile.rb:400:in `block in execute': Failed to complete compile task (RuntimeError)
from /Users/sammy/.rvm/rubies/ruby-2.4.1/lib/ruby/gems/2.4.0/gems/mini_portile2-2.2.0/lib/mini_portile2/mini_portile.rb:371:in `chdir'
from /Users/sammy/.rvm/rubies/ruby-2.4.1/lib/ruby/gems/2.4.0/gems/mini_portile2-2.2.0/lib/mini_portile2/mini_portile.rb:371:in `execute'
from /Users/sammy/.rvm/rubies/ruby-2.4.1/lib/ruby/gems/2.4.0/gems/mini_portile2-2.2.0/lib/mini_portile2/mini_portile.rb:114:in `compile'
from /Users/sammy/.rvm/rubies/ruby-2.4.1/lib/ruby/gems/2.4.0/gems/mini_portile2-2.2.0/lib/mini_portile2/mini_portile.rb:153:in `cook'
from extconf.rb:365:in `block (2 levels) in process_recipe'
from extconf.rb:257:in `block in chdir_for_build'
from extconf.rb:256:in `chdir'
from extconf.rb:256:in `chdir_for_build'
from extconf.rb:364:in `block in process_recipe'
from extconf.rb:262:in `tap'
from extconf.rb:262:in `process_recipe'
from extconf.rb:548:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/sammy/.rvm/gems/ruby-2.4.1/extensions/x86_64-darwin-16/2.4.0/nokogiri-1.8.0/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /Users/sammy/.rvm/gems/ruby-2.4.1/gems/nokogiri-1.8.0 for inspection.
Results logged to /Users/sammy/.rvm/gems/ruby-2.4.1/extensions/x86_64-darwin-16/2.4.0/nokogiri-1.8.0/gem_make.out
J'ai essayé de désinstaller Nokogiri en utilisant:
gem uninstall nokogiri
re-course alors:
gem install rails
mais j'ai eu la même erreur.
J'ai même essayé de trouver et de supprimer tous les répertoires contenant "nokogiri", puis de réécrire la commande, obtenant la même erreur.
Pourquoi Nokogiri ne s'en va-t-il pas?
Nokogiri est requis par les versions récentes de Rails - plusieurs des pierres précieuses composants (comme 'actionpack' et 'actionview') nécessitent' rails-dom-testing', qui à son tour nécessite Nokogiri. Vous devez donc installer Nokogiri ou utiliser une ancienne version de Rails. – Max