Champer Wu Champer Wu - 1 year ago 181
Ruby Question

Can't use rvm install rails 5 gem

I tried to create gemset rails500 by ruby-2.3.1 and I got :

Using /Users/ChamperWu/.rvm/gems/ruby-2.3.1 with gemset rails500
jiaqideMacBook-Pro:unispot ChamperWu$ gem install rails
Fetching: i18n-0.7.0.gem (100%)
Successfully installed i18n-0.7.0
Fetching: thread_safe-0.3.5.gem (100%)
Successfully installed thread_safe-0.3.5
Fetching: tzinfo-1.2.2.gem (100%)
Successfully installed tzinfo-1.2.2
Fetching: concurrent-ruby-1.0.2.gem (100%)
Successfully installed concurrent-ruby-1.0.2
Fetching: activesupport- (100%)
Successfully installed activesupport-
Fetching: rack-2.0.1.gem (100%)
Successfully installed rack-2.0.1
Fetching: rack-test-0.6.3.gem (100%)
Successfully installed rack-test-0.6.3
Fetching: mini_portile2-2.1.0.gem (100%)
Successfully installed mini_portile2-2.1.0
Fetching: nokogiri- (100%)
Building native extensions. This could take a while...
ERROR: Error installing rails:
ERROR: Failed to build gem native extension.

current directory: /Users/ChamperWu/.rvm/gems/ruby-2.3.1@rails500/gems/nokogiri-
/Users/ChamperWu/.rvm/rubies/ruby-2.3.1/bin/ruby -r ./siteconf20161026-41490-k9it32.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 2.1.0
checking for iconv.h... yes
checking for gzdopen() in -lz... yes
checking for iconv using --with-opt-* flags... yes

Building Nokogiri with a packaged version of libxml2-2.9.4.

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

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 'configure' for libxml2 2.9.4... OK
Running 'compile' for libxml2 2.9.4... ERROR, review '/Users/ChamperWu/.rvm/gems/ruby-2.3.1@rails500/gems/nokogiri-'

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
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
[all-recursive] Error 1
[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:

block in execute': Failed to complete compile task (RuntimeError)
from /Users/ChamperWu/.rvm/gems/ruby-2.3.1@rails500/gems/mini_portile2-2.1.0/lib/mini_portile2/mini_portile.rb:337:in
from /Users/ChamperWu/.rvm/gems/ruby-2.3.1@rails500/gems/mini_portile2-2.1.0/lib/mini_portile2/mini_portile.rb:337:in
from /Users/ChamperWu/.rvm/gems/ruby-2.3.1@rails500/gems/mini_portile2-2.1.0/lib/mini_portile2/mini_portile.rb:111:in
from /Users/ChamperWu/.rvm/gems/ruby-2.3.1@rails500/gems/mini_portile2-2.1.0/lib/mini_portile2/mini_portile.rb:150:in
from extconf.rb:365:in
block (2 levels) in process_recipe'
from extconf.rb:258:in
block in chdir_for_build'
from extconf.rb:257:in
from extconf.rb:257:in
from extconf.rb:364:in
block in process_recipe'
from extconf.rb:263:in
from extconf.rb:263:in
from extconf.rb:556:in `'

To see why this extension failed to compile, please check the mkmf.log which can be found here:


extconf failed, exit code 1

Gem files will remain installed in /Users/ChamperWu/.rvm/gems/ruby-2.3.1@rails500/gems/nokogiri-

for inspection.
Results logged to /Users/ChamperWu/.rvm/gems/ruby-2.3.1@rails500/extensions/x86_64-darwin-16/2.3.0/nokogiri-

I tried to uninstall and install it again, but I got the same info

how can I fix it?

Answer Source

It might help:

brew uninstall xz

gem install nokogiri -v 1.6.8 or gem install rails (command you are running)

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