[Rails]Chap2.1 json error

QJpioneerdeMacBook-Pro:sample_app QJpioneer$ bundle

Fetching gem metadata from https://rubygems.org/...........

Fetching version metadata from https://rubygems.org/...

Fetching dependency metadata from https://rubygems.org/..

Resolving dependencies...

Using rake 10.1.0

Using i18n 0.6.5

..

Using jquery-rails 3.0.4

Installing json 1.8.0 with native extensions

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

    /usr/local/opt/ruby/bin/ruby -r ./siteconf20160321-11217-mqtcqd.rb extconf.rb

creating Makefile

make "DESTDIR=" clean

make "DESTDIR="

compiling generator.c

In file included from generator.c:1:

./../fbuffer/fbuffer.h:175:47: error: too few arguments provided to function-like macro invocation

    VALUE result = rb_str_new(FBUFFER_PAIR(fb));

                                              ^

/usr/local/Cellar/ruby/2.2.2/include/ruby-2.2.0/ruby/intern.h:793:9: note: macro 'rb_str_new' defined here

#define rb_str_new(str, len) __extension__ (    \

        ^

In file included from generator.c:1:

./../fbuffer/fbuffer.h:175:11: warning: incompatible pointer to integer conversion initializing 'VALUE' (aka 'unsigned long') with an expression of type 'VALUE (const char *, long)' [-Wint-conversion]

    VALUE result = rb_str_new(FBUFFER_PAIR(fb));

          ^        ~~~~~~~~~~

1 warning and 1 error generated.

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

make failed, exit code 2

Gem files will remain installed in /usr/local/lib/ruby/gems/2.2.0/gems/json-1.8.0 for inspection.

Results logged to /usr/local/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-14/2.2.0/json-1.8.0/gem_make.out

An error occurred while installing json (1.8.0), and Bundler cannot continue.

Make sure that `gem install json -v '1.8.0'` succeeds before bundling.

bundle install 後出現 安裝son 錯誤.

解決方法：delete gemfile.lock and run bundle

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