WhyCan Forum(哇酷开发者社区)

不是buildroot生成的程序，是网上找的一段测试程序

#include "SDL2/SDL.h"
#include <stdio.h>

const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;

int init();
int loadMedia();
void close();

SDL_Window* gWindow = NULL;
SDL_Surface* gScreenSurface = NULL;
SDL_Surface* gHelloWorld = NULL;

int init()
{
    int success = 1;

    if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
    {
        printf( "SDL could not initialize! SDL_Error: %s\n", SDL_GetError() );
        success = 0;
    }
    else
    {
        gWindow = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
        if( gWindow == NULL )
        {
            printf( "Window could not be created! SDL_Error: %s\n", SDL_GetError() );
            success = 0;
        }
        else
        {
            gScreenSurface = SDL_GetWindowSurface( gWindow );
        }
    }

    return success;
}

int loadMedia()
{
    int success = 1;

    gHelloWorld = SDL_LoadBMP( "/usr/hello_world.bmp" );
    if( gHelloWorld == NULL )
    {
        printf( "Unable to load image %s! SDL Error: %s\n", "hello_world.bmp", SDL_GetError() );
        success = 0;
    }

    return success;
}

void close()
{
    SDL_FreeSurface( gHelloWorld );
    gHelloWorld = NULL;

    SDL_DestroyWindow( gWindow );
    gWindow = NULL;

    SDL_Quit();
}

int main( int argc, char* args[] )
{
    if( !init() )
    {
        printf( "Failed to initialize!\n" );
    }
    else
    {
        if( !loadMedia() )
        {
            printf( "Failed to load media!\n" );
        }
        else
        {
            SDL_BlitSurface( gHelloWorld, NULL, gScreenSurface, NULL );
           
            SDL_UpdateWindowSurface( gWindow );

            SDL_Delay( 2000 );
        }
    }

    close();

    return 0;
}

初始化SDL阶段就报错退出了。我就将交叉编译的SDL2库的lib文件拷到了板子的/usr/lib下，然后测试程序和bmp图片放在了/usr下