１．相应的环境：

ubuntu12.04 ruby 2.4

2.通过

bundle install --deployment --without development test postgres aws

安装gem的时候报错：

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:

/home/git/gitlab/vendor/bundle/ruby/2.4.0/gems/json-1.8.1/ext/json/ext/generator

/usr/local/bin/ruby -r ./siteconf20170122-2448-oz1rn0.rb extconf.rb

creating Makefile

current directory:

/home/git/gitlab/vendor/bundle/ruby/2.4.0/gems/json-1.8.1/ext/json/ext/generator

make "DESTDIR=" clean

current directory:

/home/git/gitlab/vendor/bundle/ruby/2.4.0/gems/json-1.8.1/ext/json/ext/generator

make "DESTDIR=" compiling generator.c In file included from

generator.c:1:0: ../fbuffer/fbuffer.h: In function 'fbuffer_to_s':

../fbuffer/fbuffer.h:175:47: error: macro "rb_str_new" requires 2

arguments, but only 1 given ../fbuffer/fbuffer.h:175:20: warning:

initialization makes integer from pointer without a cast [enabled by

default] generator.c: In function 'generate_json': generator.c:840:25:

error: 'rb_cFixnum' undeclared (first use in this function)

generator.c:840:25: note: each undeclared identifier is reported only

once for each function it appears in generator.c:842:25: error:

'rb_cBignum' undeclared (first use in this function) generator.c: At

top level: cc1: warning: unrecognized command line option

"-Wno-self-assign" [enabled by default] cc1: warning: unrecognized

command line option "-Wno-constant-logical-operand" [enabled by

default] cc1: warning: unrecognized command line option

"-Wno-parentheses-equality" [enabled by default] cc1: warning:

unrecognized command line option "-Wno-tautological-compare" [enabled

by default] make: * [generator.o] Error 1

make failed, exit code 2

Gem files will remain installed in

/home/git/gitlab/vendor/bundle/ruby/2.4.0/gems/json-1.8.1 for

Results logged to

/home/git/gitlab/vendor/bundle/ruby/2.4.0/extensions/x86-linux/2.4.0-static/json-1.8.1/gem_make.out

An error occurred while installing json (1.8.1), and Bundler cannot

Make sure that gem install json -v '1.8.1' succeeds before　bundling.

但是看到Make sure that gem install json -v '1.8.1' succeeds before　bundling.

于是我就手动安装了gem install json -v '1.8.1' ,

依然报错：

Building native extensions. This could take a while...

ERROR: Error installing json:

ERROR: Failed to build gem native extension.

current directory: /usr/local/lib/ruby/gems/2.4.0/gems/json-1.8.1/ext/json/ext/generator

/usr/local/bin/ruby -r ./siteconf20170122-3475-aueo31.rb extconf.rb

creating Makefile

current directory: /usr/local/lib/ruby/gems/2.4.0/gems/json-1.8.1/ext/json/ext/generator

make "DESTDIR=" clean

current directory: /usr/local/lib/ruby/gems/2.4.0/gems/json-1.8.1/ext/json/ext/generator

make "DESTDIR="

compiling generator.c

In file included from generator.c:1:0:

../fbuffer/fbuffer.h: In function 'fbuffer_to_s':

../fbuffer/fbuffer.h:175:47: error: macro "rb_str_new" requires 2 arguments, but only 1 given

../fbuffer/fbuffer.h:175:20: warning: initialization makes integer from pointer without a cast [enabled by default]

generator.c: In function 'generate_json':

generator.c:840:25: error: 'rb_cFixnum' undeclared (first use in this function)

generator.c:840:25: note: each undeclared identifier is reported only once for each function it appears in

generator.c:842:25: error: 'rb_cBignum' undeclared (first use in this function)

generator.c: At top level:

cc1: warning: unrecognized command line option "-Wno-self-assign" [enabled by default]

cc1: warning: unrecognized command line option "-Wno-constant-logical-operand" [enabled by default]

cc1: warning: unrecognized command line option "-Wno-parentheses-equality" [enabled by default]

cc1: warning: unrecognized command line option "-Wno-tautological-compare" [enabled by default]

make: *** [generator.o] Error 1

make failed, exit code 2

Gem files will remain installed in /usr/local/lib/ruby/gems/2.4.0/gems/json-1.8.1 for inspection.

Results logged to /usr/local/lib/ruby/gems/2.4.0/extensions/x86-linux/2.4.0-static/json-1.8.1/gem_make.out

本人并不太了解ruby，gem,我只是安装依赖ruby的软件时候遇到的。请哪位大神帮忙看一下，该问题应该怎么解决？还有讲讲ruby , gem , ruby-rails,bundle之间的关系！

谢谢！