CM9 Build Errors/VS920

target thumb C++: liboverlay <= hardware/qcom/display/liboverlay/overlayLibUI.cpp
hardware/qcom/display/liboverlay/overlayLibUI.cpp:20:1: warning: "LOG_TAG" redefined
In file included from hardware/qcom/display/liboverlay/overlayLib.h:21,
                 from hardware/qcom/display/liboverlay/overlayLibUI.h:23,
                 from hardware/qcom/display/liboverlay/overlayLibUI.cpp:18:
system/core/include/cutils/log.h:68:1: warning: this is the location of the previous definition
hardware/qcom/display/liboverlay/overlayLibUI.h: In constructor 'overlay::OverlayUI::OverlayUI()':
hardware/qcom/display/liboverlay/overlayLibUI.h:101: warning: 'overlay::OverlayUI::mFBNum' will be initialized after
hardware/qcom/display/liboverlay/overlayLibUI.h:99: warning:   'int overlay::OverlayUI::mZorder'
hardware/qcom/display/liboverlay/overlayLibUI.cpp:217: warning:   when initialized here
hardware/qcom/display/liboverlay/overlayLibUI.cpp: In member function 'void overlay::OverlayUI::setDisplayParams(int, bool, bool, int, bool)':
hardware/qcom/display/liboverlay/overlayLibUI.cpp:269: error: 'MDP_BACKEND_COMPOSITION' was not declared in this scope
hardware/qcom/display/liboverlay/overlayLibUI.cpp: In member function 'overlay::status_t overlay::OverlayUI::closeOVSession()':
hardware/qcom/display/liboverlay/overlayLibUI.cpp:430: warning: suggest parentheses around assignment used as truth value
make: *** [out/target/product/vs920/obj/SHARED_LIBRARIES/liboverlay_intermediates/overlayLibUI.o] Error 1
make: *** Waiting for unfinished jobs....
hardware/qcom/display/liboverlay/overlayLib.cpp:129:1: warning: "LOG_TAG" redefined
In file included from hardware/qcom/display/liboverlay/overlayLib.h:21,
                 from hardware/qcom/display/liboverlay/overlayLib.cpp:18:
system/core/include/cutils/log.h:68:1: warning: this is the location of the previous definition
hardware/qcom/display/liboverlay/overlayLib.cpp: In member function 'bool overlay::OverlayControlChannel::closeControlChannel()':
hardware/qcom/display/liboverlay/overlayLib.cpp:1497: warning: comparison between signed and unsigned integer expressions
hardware/qcom/display/liboverlay/overlayLib.cpp: In member function 'bool overlay::OverlayControlChannel::setPosition(int, int, uint32_t, uint32_t)':
hardware/qcom/display/liboverlay/overlayLib.cpp:1542: warning: comparison between signed and unsigned integer expressions
hardware/qcom/display/liboverlay/overlayLib.cpp:1543: warning: comparison between signed and unsigned integer expressions
hardware/qcom/display/liboverlay/overlayLib.cpp:1549: warning: comparison between signed and unsigned integer expressions
hardware/qcom/display/liboverlay/overlayLib.cpp:1549: warning: comparison between signed and unsigned integer expressions
hardware/qcom/display/liboverlay/overlayLib.cpp: In member function 'bool overlay::OverlayControlChannel::setTransform(int, bool)':
hardware/qcom/display/liboverlay/overlayLib.cpp:1621: warning: comparison between signed and unsigned integer expressions
hardware/qcom/display/liboverlay/overlayLib.cpp: In member function 'bool overlay::OverlayControlChannel::setVisualParam(int8_t, float)':
hardware/qcom/display/liboverlay/overlayLib.cpp:2302: warning: 'value' may be used uninitialized in this function
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