gem install json失败，并重新定义struct timezone/timespec

Question

我在Windows上使用Ruby1.9.3和DevKit (在Win7 64位上都是32位)。现在我尝试安装rails，但从bundle中得到一个错误。如果我尝试运行( bundle抱怨的是什么)

 gem install json

我得到以下错误消息：

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

有什么想法吗？

Answer 1

Ruby1.9.3是用DevKit提供的DevKit DevKit-tdm-32-4.5.2-20111229-1559-sfx.exe软件-- GCC 4.5.2编译而成的

您下载了较新的DevKits，它只有兼容Ruby2.0.0版本，正如RubyInstaller公告中指出的那样。

澄清一下：

Ruby1.8.7：tdm-32-4.5.2

• Ruby 1.9.2：tdm-32-4.5.2

• Ruby 1.9.3：tdm-32-4.5.2

• Ruby 2.0.0：mingw64-32-4.7.2 (64位版本)

我已经在RubyInstaller下载页面上添加了关于这一点的说明。

希望这能有所帮助

Answer 2

你可以打开你的ruby版本的include目录中的"win32.h“。

然后注释掉声明了"clock_gettime“"clock_getres”函数的行。