Building native extensions. This could take a while...
ERROR: Error installing cocoapods:
ERROR: Failed to build gem native extension.
current directory: /Users/caoshuaikun/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/json-1.8.3/ext/json/ext/generator
/Users/caoshuaikun/.rvm/rubies/ruby-2.4.0/bin/ruby -r ./siteconf20170103-1954-1elbc8h.rb extconf.rb
creating Makefile
current directory: /Users/caoshuaikun/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/json-1.8.3/ext/json/ext/generator
make "DESTDIR=" clean
current directory: /Users/caoshuaikun/.rvm/rubies/ruby-2.4.0/lib/ruby/gems/2.4.0/gems/json-1.8.3/ext/json/ext/generator
make "DESTDIR="
compiling generator.c
generator.c:861:25: error: use of undeclared identifier 'rb_cFixnum'
} else if (klass == rb_cFixnum) {
^
generator.c:863:25: error: use of undeclared identifier 'rb_cBignum'
} else if (klass == rb_cBignum) {
事了好多办法也没法解决,不知道这是几个意思,有大神帮忙解决一下么,求答案啊
