我在Mac OSX 10.9上运行ruby 2.0.0p0并尝试安装gem json但是仍然收到一条错误消息，表明它无法构建gem原生扩展。
我尝试使用：gem update --system更新rubygems但仍然得到相同的错误消息。
我是否需要为我正在运行的ruby版本安装不同版本的json（1.8.1除外）？
以下是有助于查看问题的完整输出：
Building native extensions. This could take a while...
ERROR: Error installing json:
ERROR: Failed to build gem native extension.
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/bin/ruby extconf.rb
creating Makefile
make "DESTDIR=" clean
make "DESTDIR="
compiling generator.c
In file included from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby.h:33,
from ../fbuffer/fbuffer.h:5,
from generator.c:1:
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/ruby.h:51:21: error: string.h: No such file or directory
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/ruby.h:61:21: error: stdint.h: No such file or directory
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/ruby.h:64:23: error: inttypes.h: No such file or directory
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/ruby.h:68:19: error: stdio.h: No such file or directory
In file included from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/ruby.h:70,
from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby.h:33,
from ../fbuffer/fbuffer.h:5,
from generator.c:1:
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/defines.h:29:21: error: stdlib.h: No such file or directory
In file included from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/ruby.h:194,
from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby.h:33,
from ../fbuffer/fbuffer.h:5,
from generator.c:1:
/usr/local/Cellar/apple-gcc42/4.2.1-5666.3/bin/../lib/gcc/i686-apple-darwin11/4.2.1/include/limits.h:10:25: error: limits.h: No such file or directory
In file included from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/ruby.h:1566,
from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby.h:33,
from ../fbuffer/fbuffer.h:5,
from generator.c:1:
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/missing.h:23:45: error: math.h: No such file or directory
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/missing.h:29:24: error: sys/time.h: No such file or directory
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/missing.h:38:25: error: sys/types.h: No such file or directory
In file included from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/ruby.h:1566,
from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby.h:33,
from ../fbuffer/fbuffer.h:5,
from generator.c:1:
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/missing.h:57: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘__syscall’
In file included from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:34,
from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/ruby.h:1567,
from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby.h:33,
from ../fbuffer/fbuffer.h:5,
from generator.c:1:
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/st.h:140: error: expected declaration specifiers or ‘...’ before ‘uint32_t’
In file included from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/ruby.h:1567,
from /Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby.h:33,
from ../fbuffer/fbuffer.h:5,
from generator.c:1:
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:318: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘rb_fdset_t’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:407: error: expected declaration specifiers or ‘...’ before ‘fd_set’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:407: error: expected declaration specifiers or ‘...’ before ‘fd_set’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:407: error: expected declaration specifiers or ‘...’ before ‘fd_set’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:407: warning: ‘struct timeval’ declared inside parameter list
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:407: warning: its scope is only this definition or declaration, which is probably not what you want
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:408: error: expected declaration specifiers or ‘...’ before ‘rb_fdset_t’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:408: error: expected declaration specifiers or ‘...’ before ‘rb_fdset_t’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:408: error: expected declaration specifiers or ‘...’ before ‘rb_fdset_t’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:408: warning: ‘struct timeval’ declared inside parameter list
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:409: warning: ‘struct timeval’ declared inside parameter list
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:505: error: expected declaration specifiers or ‘...’ before ‘mode_t’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:584: error: expected declaration specifiers or ‘...’ before ‘pid_t’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:598: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘rb_fork’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:599: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘rb_fork_err’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:601: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘rb_waitpid’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:602: error: expected ‘)’ before ‘pid’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:603: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘rb_spawn’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:604: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘rb_spawn_err’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:606: error: expected ‘)’ before ‘pid’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:719: error: expected declaration specifiers or ‘...’ before ‘uint32_t’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:842: error: expected ‘)’ before ‘long’
/Users/aaron/.rvm/rubies/ruby-2.0.0-p0/include/ruby-2.0.0/ruby/intern.h:843: error: expected ‘)’ before ‘long’
In file included from generator.c:1:
../fbuffer/fbuffer.h: In function ‘fbuffer_alloc’:
../fbuffer/fbuffer.h:72: warning: implicit declaration of function ‘memset’
../fbuffer/fbuffer.h:72: warning: incompatible implicit declaration of built-in function ‘memset’
../fbuffer/fbuffer.h: In function ‘fbuffer_append’:
../fbuffer/fbuffer.h:109: warning: implicit declaration of function ‘memcpy’
../fbuffer/fbuffer.h:109: warning: incompatible implicit declaration of built-in function ‘memcpy’
In file included from generator.c:2:
generator.h:6:19: error: ctype.h: No such file or directory
generator.c: In function ‘fstrndup’:
generator.c:304: warning: implicit declaration of function ‘memccpy’
generator.c: At top level:
generator.c:380: warning: unused parameter ‘self’
generator.c: In function ‘mString_to_json_raw_object’:
generator.c:410: warning: implicit declaration of function ‘strlen’
generator.c:410: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:411: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c: In function ‘mString_Extend_json_create’:
generator.c:438: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:439: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c: At top level:
generator.c:434: warning: unused parameter ‘self’
generator.c: In function ‘State_allocate’:
generator.c:505: warning: incompatible implicit declaration of built-in function ‘memset’
generator.c: In function ‘set_state_ivars’:
generator.c:611: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c: In function ‘cState_aref’:
generator.c:657: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c: In function ‘cState_aset’:
generator.c:671: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:675: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c: At top level:
generator.c:767: warning: unused parameter ‘Vstate’
generator.c:781: warning: unused parameter ‘Vstate’
generator.c:781: warning: unused parameter ‘state’
generator.c:781: warning: unused parameter ‘obj’
generator.c:786: warning: unused parameter ‘Vstate’
generator.c:786: warning: unused parameter ‘state’
generator.c:786: warning: unused parameter ‘obj’
generator.c:791: warning: unused parameter ‘Vstate’
generator.c:791: warning: unused parameter ‘state’
generator.c:791: warning: unused parameter ‘obj’
generator.c:796: warning: unused parameter ‘Vstate’
generator.c:796: warning: unused parameter ‘state’
generator.c:801: warning: unused parameter ‘Vstate’
generator.c:801: warning: unused parameter ‘state’
generator.c: In function ‘generate_json_float’:
generator.c:813: warning: implicit declaration of function ‘isinf’
generator.c:816: warning: implicit declaration of function ‘isnan’
generator.c: At top level:
generator.c:807: warning: unused parameter ‘Vstate’
generator.c: In function ‘isArrayOrObject’:
generator.c:905: warning: implicit declaration of function ‘isspace’
generator.c: In function ‘cState_init_copy’:
generator.c:972: warning: incompatible implicit declaration of built-in function ‘memcpy’
generator.c: In function ‘cState_indent’:
generator.c:1013: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c: In function ‘cState_indent_set’:
generator.c:1035: warning: implicit declaration of function ‘strdup’
generator.c:1035: warning: incompatible implicit declaration of built-in function ‘strdup’
generator.c: In function ‘cState_space’:
generator.c:1050: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c: In function ‘cState_space_set’:
generator.c:1073: warning: incompatible implicit declaration of built-in function ‘strdup’
generator.c: In function ‘cState_space_before’:
generator.c:1087: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c: In function ‘cState_space_before_set’:
generator.c:1109: warning: incompatible implicit declaration of built-in function ‘strdup’
generator.c: In function ‘cState_object_nl’:
generator.c:1124: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c: In function ‘cState_object_nl_set’:
generator.c:1146: warning: incompatible implicit declaration of built-in function ‘strdup’
generator.c: In function ‘cState_array_nl’:
generator.c:1160: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c: In function ‘cState_array_nl_set’:
generator.c:1181: warning: incompatible implicit declaration of built-in function ‘strdup’
generator.c: In function ‘Init_generator’:
generator.c:1402: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1403: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1404: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1405: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1406: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1407: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1408: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1409: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1410: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1411: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1412: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1413: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1414: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1415: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1416: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1417: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1418: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1419: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1420: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1421: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1422: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1423: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1424: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1425: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1426: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1427: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1429: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1429: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1430: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1431: warning: incompatible implicit declaration of built-in function ‘strlen’
generator.c:1433: warning: incompatible implicit declaration of built-in function ‘strlen’
make: *** [generator.o] Error 1
make failed, exit code 2
答案 0 :(得分：0)
在gemfile中添加
gem 'therubyracer', :platforms => :ruby
然后运行bundle install。