Bluecloth v2.0.10 с Windows 7 не работает

С Ruby 187 я загрузил devkit с http://rubyinstaller.org/downloads и следовал инструкциям https://github.com/oneclick/rubyinstaller/wiki/Development-Kit . Я также убедился, что devkit установлен правильно, выполнив следующие действия. дымовой тест.

Затем я попытался установить bluecloth (v2.0.10). Это не удалось с следующая ошибка:

C:\test\typo>gem install bluecloth --platform=ruby

Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing bluecloth:
       ERROR: Failed to build gem native extension.

c:/Ruby187/bin/ruby.exe extconf.rb
checking for srand()... yes
checking for random()... no
checking for rand()... yes
checking for bzero() in string.h,strings.h... no
checking for strcasecmp()... yes
checking for strncasecmp()... yes
checking for mkdio.h... yes
checking for ruby/encoding.h... no
creating extconf.h
creating Makefile

make
gcc -I. -I. -Ic:/Ruby187/lib/ruby/1.8/i386-mingw32 -I. -
DRUBY_EXTCONF_H=\"extcon
f.h\"    -DVERSION=\"2.0.4\" -g -O2 -DFD_SETSIZE=256   -I. -Wall  -c
bluecloth.c

In file included from c:\rubydevkit\mingw\bin\../lib/gcc/
mingw32/4.5.1/../../../../include/windows.h:48:0,
                from c:\rubydevkit\mingw\bin\../lib/gcc/
mingw32/4.5.1/../../../../include/winsock2.h:22,
                from c:/Ruby187/lib/ruby/1.8/i386-mingw32/win32/
win32.h:27,
                from c:/Ruby187/lib/ruby/1.8/i386-mingw32/defines.h:
186,
                from c:/Ruby187/lib/ruby/1.8/i386-mingw32/ruby.h:37,
                from bluecloth.h:14,
                from bluecloth.c:25:
c:\rubydevkit\mingw\bin\../lib/gcc/mingw32/4.5.1/../../../../include/
windef.h:229:23: error: duplicate 'unsigned'
c:\rubydevkit\mingw\bin\../lib/gcc/mingw32/4.5.1/../../../../include/
windef.h:238:23: error: duplicate 'unsigned'
c:\rubydevkit\mingw\bin\../lib/gcc/mingw32/4.5.1/../../../../include/
windef.h:238:23: error: two or more data types in declaration
specifiers
c:\rubydevkit\mingw\bin\../lib/gcc/mingw32/4.5.1/../../../../include/
windef.h:241:24: error: duplicate 'unsigned'
bluecloth.c: In function 'bluecloth_initialize':
bluecloth.c:190:9: warning: unused variable 'utf8text'
make: *** [bluecloth.o] Error 1

Gem files will remain installed in c:/Ruby187/lib/ruby/gems/1.8/gems/
bluecloth-2.0.10 for inspection.
Results logged to c:/Ruby187/lib/ruby/gems/1.8/gems/bluecloth-2.0.10/
ext/gem_make.out

C:\test\typo>