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OSXにRuby Gem Bundleをインストールしようとしています。 jsonパッケージをインストールしようとすると失敗します。このエラーはどういう意味ですか、それを修正しバンドルのインストールを完了させるにはどうすればよいですか？Gem BundleにJSONをインストールする際にエラーが発生する
An error occurred while installing json (1.7.7), and Bundler cannot continue.
Make sure that gem install json -v '1.7.7' succeeds before bundling.
MacBook-Pro:ticle_engine Stu$ gem install json -v '1.7.7'
Building native extensions. This could take a while...
ERROR: Error installing json:
ERROR: Failed to build gem native extension.
current directory: /Users/Stu/.rvm/gems/ruby-2.3.0/gems/json-1.7.7/ext/json/ext/generator
/Users/Stu/.rvm/rubies/ruby-2.3.0/bin/ruby -r ./siteconf20160518-37614-1sz34p0.rb extconf.rb
creating Makefile
current directory: /Users/Stu/.rvm/gems/ruby-2.3.0/gems/json-1.7.7/ext/json/ext/generator
make "DESTDIR=" clean
current directory: /Users/Stu/.rvm/gems/ruby-2.3.0/gems/json-1.7.7/ext/json/ext/generator
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));
^
/Users/Stu/.rvm/rubies/ruby-2.3.0/include/ruby-2.3.0/ruby/intern.h:797:9: 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