gem install json fallisce con la redifinizione di struct timezone/timespec

Question

Sono su Windows con Ruby 1.9.3 con DevKit (tutti i 32 bit su Win 7 64 bit). Ora provo a installare i binari, ma ottengo un errore dal pacchetto. Se provo a correre (cosa fascio si lamenta)

gem install json 

ottengo il seguente messaggio di errore:

D:\RubyTest>gem install json 
Temporarily enhancing PATH to include DevKit... 
Building native extensions. This could take a while... 
ERROR: Error installing json: 
     ERROR: Failed to build gem native extension. 

     D:/Ruby193/bin/ruby.exe extconf.rb 
creating Makefile 

make 
generating generator-i386-mingw32.def 
compiling generator.c 
In file included from d:/Ruby193/include/ruby-1.9.1/ruby/ruby.h:1381:0, 
       from d:/Ruby193/include/ruby-1.9.1/ruby.h:32, 
       from ../fbuffer/fbuffer.h:5, 
       from generator.c:1: 
d:/Ruby193/include/ruby-1.9.1/ruby/missing.h:41:8: error: redefinition of 'struc 
t timespec' 
In file included from d:\ruby193\mingw\bin\../lib/gcc/i686-w64-mingw32/4.7.2/../ 
../../../i686-w64-mingw32/include/process.h:12:0, 
       from d:/Ruby193/include/ruby-1.9.1/ruby/win32.h:62, 
       from d:/Ruby193/include/ruby-1.9.1/ruby/defines.h:223, 
       from d:/Ruby193/include/ruby-1.9.1/ruby/ruby.h:67, 
       from d:/Ruby193/include/ruby-1.9.1/ruby.h:32, 
       from ../fbuffer/fbuffer.h:5, 
       from generator.c:1: 
d:\ruby193\mingw\bin\../lib/gcc/i686-w64-mingw32/4.7.2/../../../../i686-w64-ming 
w32/include/sys/types.h:89:8: note: originally defined here 
In file included from d:/Ruby193/include/ruby-1.9.1/ruby/ruby.h:1381:0, 
       from d:/Ruby193/include/ruby-1.9.1/ruby.h:32, 
       from ../fbuffer/fbuffer.h:5, 
       from generator.c:1: 
d:/Ruby193/include/ruby-1.9.1/ruby/missing.h:48:8: error: redefinition of 'struc 
t timezone' 
In file included from d:/Ruby193/include/ruby-1.9.1/ruby/win32.h:63:0, 
       from d:/Ruby193/include/ruby-1.9.1/ruby/defines.h:223, 
       from d:/Ruby193/include/ruby-1.9.1/ruby/ruby.h:67, 
       from d:/Ruby193/include/ruby-1.9.1/ruby.h:32, 
       from ../fbuffer/fbuffer.h:5, 
       from generator.c:1: 
d:\ruby193\mingw\bin\../lib/gcc/i686-w64-mingw32/4.7.2/../../../../i686-w64-ming 
w32/include/time.h:260:8: note: originally defined here 
make: *** [generator.o] Error 1 


Gem files will remain installed in D:/Ruby193/lib/ruby/gems/1.9.1/gems/json-1.7. 
7 for inspection. 
Results logged to D:/Ruby193/lib/ruby/gems/1.9.1/gems/json-1.7.7/ext/json/ext/ge 
nerator/gem_make.out 

Qualche idea?

Answer 1

Rubino 1.9.3 è stato compilato con GCC 4.5.2, che è DevKit DevKit-tdm-32-4.5.2-20111229-1559-sfx.exe disponibile da RubyInstaller's download page

è stato scaricato il devkits più recenti, che sono solo compatibile con Ruby 2.0.0 release, come indicato nella RubyInstaller annuncio.

per chiarire:

• Rubino 1.8.7: tdm-32-4.5.2
• Rubino 1.9.2: tdm-32-4.5.2
• Rubino 1.9.3: tdm-32-4.5.2
• Rubino 2.0.0: mingw64-32-4.7.2 (e la versione 64bits per 64bits Ruby)

Ho aggiunto un chiarimento alla pagina di download di RubyInstaller a questo.

Speranza che aiuta

Answer 2

È possibile aprire "win32.h" che si trova nella includono directory fo la versione rubino.

Quindi commentare le righe in cui sono dichiarate le funzioni "clock_gettime" "clock_getres".