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Error installing cocoapods: error with json-1.8.3 or more

I can not install cocoapods . I'm doing it:

 gem install cocoapods

And I get all these errors:

 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

I searched a lot and I can’t find anything about these errors.

How can i solve this?

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3 answers

JSON 1.8.3 seems to be incompatible with ruby ​​2.4. . I think they are fixing it right now. In the meantime, I solved a similar problem by downgrading to ruby ​​2.3

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I had the same problem. I installed the Cocoapods application from my website, which allowed me to create the coco ports that I need for my application (firebase integration).

https://github.com/CocoaPods/CocoaPods/issues/6299#issuecomment-269282062

Installing the command line tools seemed to work for me, but hopefully the fixed dependency (json1.8.3) will be fixed so that it will be built correctly.

Hope this helps you until a more permanent solution is found.

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Same issue here with gem-github-pages' trying to install json ..

Solved my problem by downgrading it to ruby ​​2.3 using this:

`brew install rbenv ruby-build

Add rbenv to bash so that it loads every time you open the echo 'terminal, if which rbenv> / dev / null; then eval "$ (rbenv init -)"; fi '→ ~ / .bash_profile source ~ / .bash_profile

Install Ruby rbenv install 2.3.3 rbenv global 2.3.3 ruby ​​-v`

from: https://gorails.com/setup/osx/10.12-sierra

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Source: https://habr.com/ru/post/1261996/

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