Why Not Build From Android-ndk-r7 Use Cygwin

when libcocos2d.so compile…

StaticLibrary : libcrystax.a
Prebuilt : libcrystax_static.a <= <NDK>/sources/crystax/libs/armeabi/4.6.3/
Prebuilt : libstlport_static.a <= <NDK>/sources/cxx-stl/stlport/libs/armeabi/4.6.3/
SharedLibrary : libcocos2d.so
c:/android-ndk-r7/toolchains/arm-linux-androideabi-4.6.3/prebuilt/windows/bin/…/lib/gcc/arm-linux-androideabi/4.6.3/…/…/…/…/arm-linux-androideabi/bin/ld.exe: error: cannot open ./obj/local/armeabi/libcrystax_static.a: Permission denied
c:/android-ndk-r7/toolchains/arm-linux-androideabi-4.6.3/prebuilt/windows/bin/…/lib/gcc/arm-linux-androideabi/4.6.3/…/…/…/…/arm-linux-androideabi/bin/ld.exe: error: cannot open ./obj/local/armeabi/libstlport_static.a: Permission denied
c:/android-ndk-r7/toolchains/arm-linux-androideabi-4.6.3/prebuilt/windows/bin/…/lib/gcc/arm-linux-androideabi/4.6.3/…/…/…/…/arm-linux-androideabi/bin/ld.exe: error: cannot open ./obj/local/armeabi/libcrystax_static.a: Permission denied
C:/android-ndk-r7/sources/cxx-stl/stlport/stlport/stl/_alloc.h:158: error: undefined reference to ‘std::__node_alloc::_M_allocate(unsigned int&)’
C:/android-ndk-r7/sources/cxx-stl/stlport/stlport/stl/_alloc.h:161: error: undefined reference to ‘std::__node_alloc::_M_deallocate(void*, unsigned int)’
C:/android-ndk-r7/sources/cxx-stl/stlport/stlport/stl/_string.c:600: error: undefined reference to ‘std::__stl_throw_length_error(char const*)’
./obj/local/armeabi/objs-debug/cocos2d/CCConfiguration.o:CCConfiguration.cpp:function typeinfo for cocos2d::CCConfiguration: error: undefined reference to ‘vtable for _cxxabiv1::_si_class_type_info’
jni/…/…/…/cocos2dx/CCScheduler.cpp:238: error: undefined reference to ‘__dynamic_cast’
jni/…/…/…/cocos2dx/CCScheduler.cpp:258: error: undefined reference to ‘__dynamic_cast’
jni/…/…/…/cocos2dx/CCScheduler.cpp:445: error: undefined reference to ‘__dynamic_cast’
jni/…/…/…/cocos2dx/CCScheduler.cpp:464: error: undefined reference to ‘__dynamic_cast’
./obj/local/armeabi/objs-debug/cocos2d/CCScheduler.o:CCScheduler.cpp:function typeinfo for cocos2d::CCScheduler: error: undefined reference to ‘vtable for _cxxabiv1::_si_class_type_info’
./obj/local/armeabi/objs-debug/cocos2d/CCScheduler.o:CCScheduler.cpp:function typeinfo for cocos2d::CCTimer: error: undefined reference to ‘vtable for _cxxabiv1::_si_class_type_info’
./obj/local/armeabi/objs-debug/cocos2d/CCScheduler.o:CCScheduler.cpp:function typeinfo for cocos2d::SelectorProtocol: error: undefined reference to ‘vtable for _cxxabiv1::_class_type_info’
./obj/local/armeabi/objs-debug/cocos2d/CCCamera.o:CCCamera.cpp:function typeinfo for cocos2d::CCCamera: error: undefined reference to ‘vtable for _cxxabiv1::_si_class_type_info’
C:/android-ndk-r7/sources/cxx-stl/stlport/stlport/stl/_vector.c:41: error: undefined reference to ‘std::__stl_throw_length_error(char const*)’
./obj/local/armeabi/objs-debug/cocos2d/actions/CCActionInterval.o:CCActionInterval.cpp:function typeinfo for cocos2d::CCRGBAProtocol: error: undefined reference to ‘vtable for _cxxabiv1::_class_type_info’
./obj/local/armeabi/objs-debug/cocos2d/actions/CCActionManager.o:CCActionManager.cpp:function typeinfo for cocos2d::CCActionManager: error: undefined reference to ‘vtable for _cxxabiv1::_vmi_class_type_info’
./obj/local/armeabi/objs-debug/cocos2d/base_nodes/CCAtlasNode.o:CCAtlasNode.cpp:function typeinfo for cocos2d::CCAtlasNode: error: undefined reference to ‘vtable for _cxxabiv1::_vmi_class_type_info’
./obj/local/armeabi/objs-debug/cocos2d/base_nodes/CCAtlasNode.o:CCAtlasNode.cpp:function typeinfo for cocos2d::CCBlendProtocol: error: undefined reference to ‘vtable for _cxxabiv1::_class_type_info’
./obj/local/armeabi/objs-debug/cocos2d/base_nodes/CCNode.o:CCNode.cpp:function typeinfo for cocos2d::CCNode: error: undefined reference to ‘vtable for _cxxabiv1::_vmi_class_type_info’
C:/android-ndk-r7/sources/cxx-stl/stlport/stlport/stl/_vector.c:41: error: undefined reference to ‘std::__stl_throw_length_error(char const*)’
C:/android-ndk-r7/sources/cxx-stl/stlport/stlport/stl/_vector.c:41: error: undefined reference to ‘std::__stl_throw_length_error(char const*)’
C:/android-ndk-r7/sources/cxx-stl/stlport/stlport/stl/_vector.c:45: error: undefined reference to ‘std::__stl_throw_out_of_range(char const*)’
./obj/local/armeabi/objs-debug/cocos2d/cocoa/CCData.o:CCData.cpp:function typeinfo for cocos2d::CCFileData: error: undefined reference to ‘vtable for _cxxabiv1::_class_type_info’
C:/android-ndk-r7/sources/cxx-stl/stlport/stlport/stl/_string.c:604: error: undefined reference to ‘std::__stl_throw_out_of_range(char const*)’
./obj/local/armeabi/objs-debug/cocos2d/label_nodes/CCLabelAtlas.o:CCLabelAtlas.cpp:function typeinfo for cocos2d::CCLabelAtlas: error: undefined reference to ‘vtable for _cxxabiv1::_vmi_class_type_info’
collect2: ld returned 1 exit status
/cygdrive/c/android-ndk-r7/build/core/build-binary.mk:324: recipe for target `obj/local/armeabi/libcocos2d.so’ failed
make: *** [obj/local/armeabi/libcocos2d.so] Error 1

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These errors will appear…
plz Help me