我试图了解如何修复错误：
C:\inetpub\wwwroot\DISCOU~2>gem install fast_stack
ERROR: Error installing fast_stack:
ERROR: Failed to build gem native extension.
C:/Ruby200/bin/ruby.exe extconf.rb
creating Makefile
make "DESTDIR="
generating fast_stack-i386-mingw32.def
compiling fast_stack.c
In file included from c:/Ruby200/include/ruby-2.0.0/ruby/defines.h:153:0,
from c:/Ruby200/include/ruby-2.0.0/ruby/ruby.h:70,
from c:/Ruby200/include/ruby-2.0.0/ruby.h:33,
from fast_stack.c:3:
c:/Ruby200/include/ruby-2.0.0/ruby/win32.h:276:12: error: conflicting types for 'gettimeofday'
In file included from fast_stack.c:2:0:
c:\ruby200\devkit\mingw\bin\../lib/gcc/i686-w64-mingw32/4.7.2/../../../../i686-w64-mingw32/include/sys/time.h:42:13: note: previous declaration of 'gettimeofday' was here
fast_stack.c: In function 'rb_profile_start':
fast_stack.c:9:22: error: storage size of 'timer' isn't known
fast_stack.c:11:34: error: 'suseconds_t' undeclared (first use in this function)
fast_stack.c:11:34: note: each undeclared identifier is reported only once for each function it appears in
fast_stack.c:11:46: error: expected ';' before 'rb_num2long_inline'
fast_stack.c:13:5: warning: implicit declaration of function 'setitimer' [-Wimplicit-function-declaration]
fast_stack.c:13:15: error: 'ITIMER_REAL' undeclared (first use in this function)
fast_stack.c:9:22: warning: unused variable 'timer' [-Wunused-variable]
fast_stack.c: In function 'rb_profile_stop':
fast_stack.c:21:22: error: storage size of 'timer' isn't known
fast_stack.c:23:15: error: 'ITIMER_REAL' undeclared (first use in this function)
fast_stack.c:21:22: warning: unused variable 'timer' [-Wunused-variable]
make: *** [fast_stack.o] Error 1
Gem files will remain installed in C:/inetpub/wwwroot/DISCOU~2/GEM_HOME/gems/fast_stack-0.1.0 for inspection.
当我为在 Helicon Zoo 环境中安装的 discourse.org 应用程序编写“捆绑安装”命令时，就会发生这种情况。