我无法安装cocoapods。我这样做：
gem install cocoapods
我得到了所有这些错误：
Building native extensions. This could take a while...
ERROR: Error installing cocoapods:
ERROR: Failed to build gem native extension.
current directory: /usr/local/lib/ruby/gems/2.4.0/gems/json-1.8.3/ext/json/ext/generator
/usr/local/opt/ruby/bin/ruby -r ./siteconf20161228-19158-1ru87yt.rb extconf.rb
creating Makefile
current directory: /usr/local/lib/ruby/gems/2.4.0/gems/json-1.8.3/ext/json/ext/generator
make "DESTDIR=" clean
current directory: /usr/local/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) {
^
generator.c:975:5: warning: division by zero is undefined [-Wdivision-by-zero]
rb_scan_args(argc, argv, "01", &opts);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2143:9: note: expanded from macro 'rb_scan_args'
rb_scan_args0(argc,argvp,fmt,\
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2329:8: note: expanded from macro 'rb_scan_args0'
rb_scan_args_verify(fmt, varc), vars)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2201:11: note: expanded from macro 'rb_scan_args_verify'
verify = rb_scan_args_verify_count(fmt, varc); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2167:6: note: expanded from macro 'rb_scan_args_count_hash'
rb_scan_args_count_block(fmt, ofs, varc, vari) : \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2162:6: note: expanded from macro 'rb_scan_args_count_block'
rb_scan_args_count_end(fmt, ofs, varc, vari) : \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2158:12: note: expanded from macro 'rb_scan_args_count_end'
((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
generator.c:975:5: warning: division by zero is undefined [-Wdivision-by-zero]
rb_scan_args(argc, argv, "01", &opts);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2143:9: note: expanded from macro 'rb_scan_args'
rb_scan_args0(argc,argvp,fmt,\
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2329:8: note: expanded from macro 'rb_scan_args0'
rb_scan_args_verify(fmt, varc), vars)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2201:11: note: expanded from macro 'rb_scan_args_verify'
verify = rb_scan_args_verify_count(fmt, varc); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2167:6: note: expanded from macro 'rb_scan_args_count_hash'
rb_scan_args_count_block(fmt, ofs, varc, vari) : \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2163:6: note: expanded from macro 'rb_scan_args_count_block'
rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2158:12: note: expanded from macro 'rb_scan_args_count_end'
((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
generator.c:975:5: warning: division by zero is undefined [-Wdivision-by-zero]
rb_scan_args(argc, argv, "01", &opts);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2143:9: note: expanded from macro 'rb_scan_args'
rb_scan_args0(argc,argvp,fmt,\
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2329:8: note: expanded from macro 'rb_scan_args0'
rb_scan_args_verify(fmt, varc), vars)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2201:11: note: expanded from macro 'rb_scan_args_verify'
verify = rb_scan_args_verify_count(fmt, varc); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2168:6: note: expanded from macro 'rb_scan_args_count_hash'
rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2162:6: note: expanded from macro 'rb_scan_args_count_block'
rb_scan_args_count_end(fmt, ofs, varc, vari) : \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2158:12: note: expanded from macro 'rb_scan_args_count_end'
((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
generator.c:975:5: warning: division by zero is undefined [-Wdivision-by-zero]
rb_scan_args(argc, argv, "01", &opts);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2143:9: note: expanded from macro 'rb_scan_args'
rb_scan_args0(argc,argvp,fmt,\
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2329:8: note: expanded from macro 'rb_scan_args0'
rb_scan_args_verify(fmt, varc), vars)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2201:11: note: expanded from macro 'rb_scan_args_verify'
verify = rb_scan_args_verify_count(fmt, varc); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2167:6: note: expanded from macro 'rb_scan_args_count_hash'
rb_scan_args_count_block(fmt, ofs, varc, vari) : \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2162:6: note: expanded from macro 'rb_scan_args_count_block'
rb_scan_args_count_end(fmt, ofs, varc, vari) : \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2158:12: note: expanded from macro 'rb_scan_args_count_end'
((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
generator.c:975:5: warning: division by zero is undefined [-Wdivision-by-zero]
rb_scan_args(argc, argv, "01", &opts);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2143:9: note: expanded from macro 'rb_scan_args'
rb_scan_args0(argc,argvp,fmt,\
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2329:8: note: expanded from macro 'rb_scan_args0'
rb_scan_args_verify(fmt, varc), vars)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2201:11: note: expanded from macro 'rb_scan_args_verify'
verify = rb_scan_args_verify_count(fmt, varc); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2167:6: note: expanded from macro 'rb_scan_args_count_hash'
rb_scan_args_count_block(fmt, ofs, varc, vari) : \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2162:6: note: expanded from macro 'rb_scan_args_count_block'
rb_scan_args_count_end(fmt, ofs, varc, vari) : \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2158:12: note: expanded from macro 'rb_scan_args_count_end'
((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
generator.c:975:5: warning: division by zero is undefined [-Wdivision-by-zero]
rb_scan_args(argc, argv, "01", &opts);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2143:9: note: expanded from macro 'rb_scan_args'
rb_scan_args0(argc,argvp,fmt,\
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2329:8: note: expanded from macro 'rb_scan_args0'
rb_scan_args_verify(fmt, varc), vars)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2201:11: note: expanded from macro 'rb_scan_args_verify'
verify = rb_scan_args_verify_count(fmt, varc); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2167:6: note: expanded from macro 'rb_scan_args_count_hash'
rb_scan_args_count_block(fmt, ofs, varc, vari) : \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2162:6: note: expanded from macro 'rb_scan_args_count_block'
rb_scan_args_count_end(fmt, ofs, varc, vari) : \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/Cellar/ruby/2.4.0/include/ruby-2.4.0/ruby/ruby.h:2158:12: note: expanded from macro 'rb_scan_args_count_end'
((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
6 warnings and 2 errors generated.
make: *** [generator.o] Error 1
make failed, exit code 2
Gem files will remain installed in /usr/local/lib/ruby/gems/2.4.0/gems/json-1.8.3 for inspection.
Results logged to /usr/local/lib/ruby/gems/2.4.0/extensions/x86_64-darwin-16/2.4.0/json-1.8.3/gem_make.out
我一直在搜索，我找不到有关这些错误的任何内容。
我该如何解决？
答案 0 :(得分：5)
似乎是JSON 1.8.3 is not compatible with ruby 2.4.。我认为他们现在正在解决这个问题。与此同时，我通过降级为ruby 2.3来解决类似问题
答案 1 :(得分：0)
我遇到了同样的问题。我从他们的网站安装了Cocoapods应用程序，这使我能够构建我的应用程序所需的cocoapods（集成firebase）。
https://github.com/CocoaPods/CocoaPods/issues/6299#issuecomment-269282062
安装命令行工具似乎对我有用，但希望破坏的依赖项（json1.8.3）将被修复，以便正确构建。
希望这有助于您找到更永久的解决方案。
答案 2 :(得分：0)
与gem＆＃39; github-pages＆＃39;同样的问题，尝试安装json ..
通过降级为ruby 2.3解决了我的问题：
`brew install rbenv ruby-build
将bbenv添加到bash中，以便每次打开终端时加载它 echo＆＃39;如果哪个rbenv＆gt;的/ dev / null的;然后eval＆＃34; $（rbenv init - ）＆＃34 ;;音响＆＃39; ＆GT;＆GT;在〜/ .bash_profile source~ / .bash_profile
安装Ruby rbenv安装2.3.3 rbenv global 2.3.3 ruby -v`