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android编译surface c++程序时，报错缺少.o文件

IT知识Android编译C++程序

人生处万类,知识最为贤。这篇文章主要讲述android编译surface c++程序时，报错缺少.o文件相关的知识，希望能为你提供帮助。
近期在研究android的surface系统，写了个小demo，编译的时候。一直报错，说是缺少.o文件，可是看代码一直没问题。后来发现原来是在window下编写的，然后在linux编译的时候，后缀多了^M。所以导致编译只是。
事实上提示类似的错误。肯定是代码那块地方出现了类似的错误。不知道的，查起来能累死，知道的非常快的就能知道怎么查。
顺便把源代码贴写。
testsurface.cpp

#include < unistd.h>
#include < string.h>
#include < stdlib.h>
#include < getopt.h>


#include < cutils/memory.h>
#include< native_window.h>


#include < utils/Log.h>


#include < binder/IPCThreadState.h>
#include < binder/ProcessState.h>
#include < binder/IServiceManager.h>


#include < ui/GraphicBuffer.h>
#include < gui/Surface.h>
#include < gui/ISurfaceComposer.h>
#include < gui/SurfaceComposerClient.h>
#include < cutils/properties.h>


#include < ui/DisplayInfo.h>
using namespace android;
int main(int argv,char *argc[])
{
    sp< ProcessState> proc(ProcessState::self());
    ProcessState::self()-> startThreadPool();


    sp< SurfaceComposerClient> client = new SurfaceComposerClient();
    sp< SurfaceControl> surfaceControl = client-> createSurface(String8("testsurface"),240, 160, PIXEL_FORMAT_RGBX_8888, 0);
    DisplayInfo dinfo;
    sp< IBinder> display = SurfaceComposerClient::getBuiltInDisplay(
            ISurfaceComposer::eDisplayIdMain);
    SurfaceComposerClient::getDisplayInfo(display, & dinfo);
    uint32_t dispw = dinfo.w;
    uint32_t disph = dinfo.h;


    /* create backgound surface */
    sp< SurfaceControl> bg_surfaceControl = client-> createSurface(
            String8("test-bg-surface"), dispw, disph, PIXEL_FORMAT_RGBX_8888);


    sp< Surface> bg_surface = bg_surfaceControl-> getSurface();

  /* set background layer z-order */
    SurfaceComposerClient::openGlobalTransaction();
    bg_surfaceControl-> setLayer(200000);
    SurfaceComposerClient::closeGlobalTransaction();


    /* clear background layer black */
    ANativeWindow_Buffer outBuffer;


    bg_surface-> lock(& outBuffer, NULL);
    ssize_t bpr = outBuffer.stride * bytesPerPixel(outBuffer.format);
    android_memset32((uint32_t*)outBuffer.bits, 0xFF000000, bpr * outBuffer.height);
    bg_surface-> unlockAndPost();
    sleep(5);


    bg_surface-> lock(& outBuffer, NULL);
      bpr = outBuffer.stride * bytesPerPixel(outBuffer.format);
    android_memset32((uint32_t*)outBuffer.bits, 0xF800, bpr * outBuffer.height);
    bg_surface-> unlockAndPost();
    sleep(5);


    bg_surface-> lock(& outBuffer, NULL);
    bpr = outBuffer.stride * bytesPerPixel(outBuffer.format);
    android_memset32((uint32_t*)outBuffer.bits, 0x7e56, bpr * outBuffer.height);
    bg_surface-> unlockAndPost();
    sleep(5);
    return 0;
}

Android.mk

【android编译surface c++程序时，报错缺少.o文件】LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)


LOCAL_SRC_FILES:= testsurface.cpp


LOCAL_C_INCLUDES := external/skia/include/core \
                    frameworks/native/include/android


LOCAL_SHARED_LIBRARIES := libcutils \
    libutils \
    libbinder \
    libui \
    libgui \


LOCAL_MODULE:= testsurface


LOCAL_MODULE_TAGS := tests


include $(BUILD_EXECUTABLE)













































































































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