紅寶石JSON寶石（1.1.3）安裝失敗

Question

這是我得到的錯誤：

MacBook-Pro:myapp marcamilly$ gem install json -v 1.1.3 
Building native extensions. This could take a while... 
ERROR: Error installing json: 
    ERROR: Failed to build gem native extension. 

/Users/marcamilly/.rvm/rubies/ruby-1.9.2-p0/bin/ruby extconf.rb 
creating Makefile 

make 
gcc -I. -I/Users/marcamilly/.rvm/rubies/ruby-1.9.2-p0/include/ruby-1.9.1/x86_64-darwin10.4.0 -I/Users/marcamilly/.rvm/rubies/ruby-1.9.2-p0/include/ruby-1.9.1/ruby/backward -I/Users/marcamilly/.rvm/rubies/ruby-1.9.2-p0/include/ruby-1.9.1 -I. -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers -Wshorten-64-to-32 -Wno-long-long -fno-common -pipe -Wall -o parser.o -c parser.c 
parser.rl:2:16: error: re.h: No such file or directory 
In file included from parser.rl:3: 
/Users/marcamilly/.rvm/rubies/ruby-1.9.2-p0/include/ruby-1.9.1/ruby/backward/st.h:2:2: warning: #warning use "ruby/st.h" instead of bare "st.h" 
parser.rl: In function ‘cParser_initialize’: 
parser.rl:499: error: ‘struct RHash’ has no member named ‘tbl’ 
parser.rl:511: error: ‘struct RHash’ has no member named ‘tbl’ 
parser.rl:518: error: ‘struct RHash’ has no member named ‘tbl’ 
make: *** [parser.o] Error 1 


Gem files will remain installed in /Users/marcamilly/.rvm/gems/ruby-1.9.2-p0/gems/json-1.1.3 for inspection. 
Results logged to /Users/marcamilly/.rvm/gems/ruby-1.9.2-p0/gems/json-1.1.3/ext/json/ext/parser/gem_make.out 

什麼有什麼想法我怎麼能解決這個問題？

我相信我可能已經安裝了json作爲另一個項目（一個Rails項目）之前的一部分，但現在我試圖安裝這個特定的，用於Sinatra，這是我得到的錯誤。

謝謝。

Answer 1

在安裝此gem之前，似乎必須選擇ruby 1.8.7作爲Ruby的當前版本。

我終於得到它正確安裝。