我无法安装ffi gem并在执行'bundle install'时出现以下错误：
Installing ffi (1.0.11) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/home/Dmitry.Veremchuk/.rvm/rubies/ruby-1.9.3-p194/bin/ruby.exe extconf.rb
checking for ffi.h... no
checking for ffi.h in /usr/local/include... no
checking for rb_thread_blocking_region()... yes
checking for ruby_native_thread_p()... yes
checking for rb_thread_call_with_gvl()... yes
creating extconf.h
creating Makefile
make
Configuring libffi
make -C "/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi"
make[1]: Entering directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi'
make "AR_FLAGS=" "CC_FOR_BUILD=" "CFLAGS=" "CXXFLAGS=" "CFLAGS_FOR_BUILD="
"CFLAGS_FOR_TARGET=" "INSTALL=/usr/bin/install -c" "INSTALL_DATA=/usr/bin/install -c -m 644" "INSTALL_PROGRAM=/usr/bin/install -c" "INSTALL_SCRIPT=/usr/bin/install -c" "JC1FLAGS=" "LDFLAGS=" "LIBCFLAGS=" "LIBCFLAGS_FOR_TARGET=" "MAKE=make" "MAKEINFO=/bin/sh /home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi/missing --run makeinfo " "PICFLAG=" "PICFLAG_FOR_TARGET=" "RUNTESTFLAGS=" "SHELL=/bin/sh" "exec_prefix=/usr/local" "infodir=/usr/local/share/info" "libdir=/usr/local/lib" "prefix=/usr/local" "AR=ar" "AS=as" "CC=gcc" "CXX=g++" "LD=/usr/i686-pc-cygwin/bin/ld.exe" "NM=/usr/bin/nm -B" "RANLIB=ranlib" "DESTDIR=" all-recursive
make[2]: Entering directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi'
Making all in include
make[3]: Entering directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi/include'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi/include'
Making all in testsuite
make[3]: Entering directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi/testsuite'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi/testsuite'
Making all in man
make[3]: Entering directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi/man'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi/man'
make[3]: Entering directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi'
/bin/sh ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c -o src/debug.lo src/debug.c
libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c src/debug.c -DDLL_EXPORT -DPIC -o src/.libs/debug.o
/bin/sh ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c -o src/prep_cif.lo src/prep_cif.c
libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c src/prep_cif.c -DDLL_EXPORT -DPIC -o src/.libs/prep_cif.o
/bin/sh ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c -o src/types.lo src/types.c
libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c src/types.c -DDLL_EXPORT -DPIC -o src/.libs/types.o
/bin/sh ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c -o src/raw_api.lo src/raw_api.c
libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c src/raw_api.c -DDLL_EXPORT -DPIC -o src/.libs/raw_api.o
/bin/sh ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c -o src/java_raw_api.lo src/java_raw_api.c
libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c src/java_raw_api.c -DDLL_EXPORT -DPIC -o src/.libs/java_raw_api.o
/bin/sh ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c -o src/closures.lo src/closures.c
libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c src/closures.c -DDLL_EXPORT -DPIC -o src/.libs/closures.o
/bin/sh ./libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c -o src/x86/ffi.lo src/x86/ffi.c
libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -Wall -g -fexceptions -c src/x86/ffi.c -DDLL_EXPORT -DPIC -o src/x86/.libs/ffi.o
/bin/sh ./libtool --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -I. -I./include -Iinclude -I./src -c -o src/x86/win32.lo src/x86/win32.S
libtool: compile: gcc -DHAVE_CONFIG_H -I. -I. -I./include -Iinclude -I./src -I. -I./include -Iinclude -I./src -c src/x86/win32.S -DDLL_EXPORT -DPIC -o src/x86/.libs/win32.o
/bin/sh ./libtool --tag=CC --mode=link gcc -Wall -g -fexceptions -version-info `grep -v '^#' ./libtool-version` -no-undefined -o libffi.la -rpath /usr/local/lib src/debug.lo src/prep_cif.lo src/types.lo src/raw_api.lo src/java_raw_api.lo src/closures.lo src/x86/ffi.lo src/x86/win32.lo
libtool: link: gcc -shared src/.libs/debug.o src/.libs/prep_cif.o src/.libs/types.o src/.libs/raw_api.o src/.libs/java_raw_api.o src/.libs/closures.o src/x86/.libs/ffi.o src/x86/.libs/win32.o -o .libs/cygffi-5.dll -Wl,--enable-auto-image-base -Xlinker --out-implib -Xlinker .libs/libffi.dll.a
Creating library file: .libs/libffi.dll.a
libtool: link: ( cd ".libs" && rm -f "libffi.la" && ln -s "../libffi.la" "libffi.la" )
/bin/sh ./libtool --tag=CC --mode=link gcc -Wall -g -fexceptions -o libffi_convenience.la src/debug.lo src/prep_cif.lo src/types.lo src/raw_api.lo src/java_raw_api.lo src/closures.lo src/x86/ffi.lo src/x86/win32.lo
libtool: link: ar cru .libs/libffi_convenience.a src/.libs/debug.o src/.libs/prep_cif.o src/.libs/types.o src/.libs/raw_api.o src/.libs/java_raw_api.o src/.libs/closures.o src/x86/.libs/ffi.o src/x86/.libs/win32.o
libtool: link: ranlib .libs/libffi_convenience.a
libtool: link: ( cd ".libs" && rm -f "libffi_convenience.la" && ln -s "../libffi_convenience.la" "libffi_convenience.la" )
make[3]: Leaving directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi'
make[2]: Leaving directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi'
make[1]: Leaving directory `/home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/libffi'
compiling AbstractMemory.c
AbstractMemory.c:271: warning: 'memory_put_bool' defined but not used
AbstractMemory.c:271: warning: 'memory_write_bool' defined but not used
AbstractMemory.c:271: warning: 'memory_get_bool' defined but not used
AbstractMemory.c:271: warning: 'memory_read_bool' defined but not used
AbstractMemory.c:271: warning: 'memory_write_array_of_bool' defined but not used
AbstractMemory.c:271: warning: 'memory_read_array_of_bool' defined but not used
AbstractMemory.c:388: warning: 'memory_read_array_of_string' defined but not used
compiling ArrayType.c
compiling Buffer.c
compiling Call.c
compiling ClosurePool.c
compiling DataConverter.c
compiling DynamicLibrary.c
compiling ffi.c
compiling Function.c
compiling FunctionInfo.c
compiling LastError.c
compiling MappedType.c
MappedType.c: In function `mapped_initialize':
MappedType.c:63: warning: unused variable `t'
compiling MemoryPointer.c
MemoryPointer.c:134: warning: 'memptr_mark' defined but not used
compiling MethodHandle.c
compiling Platform.c
compiling Pointer.c
compiling Struct.c
compiling StructByReference.c
compiling StructByValue.c
compiling StructLayout.c
compiling Thread.c
In file included from /usr/include/cygwin/sys_time.h:13,
from /usr/include/sys/time.h:28,
from /usr/include/sys/_default_fcntl.h:186,
from /usr/include/sys/fcntl.h:3,
from /usr/include/fcntl.h:14,
from Thread.c:31:
/usr/include/sys/select.h:31: error: parse error before "fd_set"
/usr/include/sys/select.h:33: error: parse error before "fd_set"
In file included from /home/Dmitry.Veremchuk/.rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby/ruby.h:1382,
from /home/Dmitry.Veremchuk/.rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby.h:32,
from Thread.h:25,
from Thread.c:32:
/home/Dmitry.Veremchuk/.rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby/intern.h:285: error: parse error before "rb_fdset_t"
/home/Dmitry.Veremchuk/.rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby/intern.h:285: warning: type defaults to `int' in declaration of `rb_fdset_t'
/home/Dmitry.Veremchuk/.rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby/intern.h:285: warning: data definition has no type or storage class
/home/Dmitry.Veremchuk/.rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby/intern.h:379: error: parse error before "fd_set"
/home/Dmitry.Veremchuk/.rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby/intern.h:380: error: parse error before "rb_fdset_t"
Makefile:199: recipe for target `Thread.o' failed
make: *** [Thread.o] Error 1
Gem files will remain installed in /home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11 for inspection.
Results logged to /home/Dmitry.Veremchuk/.rvm/gems/ruby-1.9.3-p194/gems/ffi-1.0.11/ext/ffi_c/gem_make.out
An error occured while installing ffi (1.0.11), and Bundler cannot continue.
Make sure that `gem install ffi -v '1.0.11'` succeeds before bundling.
我的Gemfile中不需要FFI gem。虽然我认为Capybara需要它。
我有以下配置：
使用Windows XP和Cygwin的PC（安装了devtools）;
Ruby版本1.9.3p194（在RVM中）;
Rails版本3.2.8。
我试图单独安装ffi-1.0.11，但遗憾的是结果相同。
非常感谢任何帮助。