Ошибки импорта openCV в Eclipse не исчезнут?

Я использую это руководство:

http://opencv.itseez.com/doc/tutorials/introduction/android_binary_package/android_binary_package.html

После того, как я импортировал openCV, eclipse перечисляет кучу ошибок, которые ожидаются в руководстве.

Но руководство говорит, что ошибки шланга должны исчезнуть после нажатия клавиши F5 или выбора «исправить свойства проекта» в меню. Я попробовал оба. Мои ошибки не исчезнут. Что я делаю неправильно?

Из Затмения:

Description Resource    Path    Location    Type
The project cannot be built until build path errors are resolved    es2_globe       Unknown Java Problem
The project cannot be built until build path errors are resolved    es2_water       Unknown Java Problem
The project cannot be built until build path errors are resolved    event_accelerometer     Unknown Java Problem
The project cannot be built until build path errors are resolved    event_lorenz        Unknown Java Problem
The project cannot be built until build path errors are resolved    jniperftest     Unknown Java Problem
The project cannot be built until build path errors are resolved    multitouch      Unknown Java Problem
The project cannot be built until build path errors are resolved    native_globe        Unknown Java Problem
The project cannot be built until build path errors are resolved    native_lorenz       Unknown Java Problem
The project cannot be built until build path errors are resolved    surface_texture_java        Unknown Java Problem
Cannot run program "gcc": Launching failed  libs-sdk9       [Discovery Options] page in project properties  C/C++ Problem
Cannot run program "gcc": Launching failed  native_globe        [Discovery Options] page in project properties  C/C++ Problem
Cannot run program "gcc": Launching failed  native_lorenz       [Discovery Options] page in project properties  C/C++ Problem
Error launching external scanner info generator (gcc -E -P -v -dD C:/NVPACK/nvsample_workspace/.metadata/.plugins/org.eclipse.cdt.make.core/specs.cpp)  libs-sdk9       [Discovery Options] page in project properties  C/C++ Problem
Error launching external scanner info generator (gcc -E -P -v -dD C:/NVPACK/nvsample_workspace/.metadata/.plugins/org.eclipse.cdt.make.core/specs.cpp)  native_globe        [Discovery Options] page in project properties  C/C++ Problem
Error launching external scanner info generator (gcc -E -P -v -dD C:/NVPACK/nvsample_workspace/.metadata/.plugins/org.eclipse.cdt.make.core/specs.cpp)  native_lorenz       [Discovery Options] page in project properties  C/C++ Problem
Program 'gcc' is not found in $PATH native_globe        [Discovery Options] page in project properties  C/C++ Problem
Program 'gcc' is not found in $PATH native_lorenz       [Discovery Options] page in project properties  C/C++ Problem
The import android.util.Log is never used   NvEventQueueActivity.java   /libs/src/com/nvidia/devtech    line 54 Java Problem
The import android.util.Log is never used   NvGLESActivity.java /libs/src/com/nvidia/devtech    line 39 Java Problem

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