linux media sdk about libva problem

Hi,

i use stream decode（HW）for linux，but it‘s must root user.

i test found,the proble maybe library for libva，it‘s must root user.if use  official website latest，normal user its ok，but libmfxhw64.so: undefined reference to `vaCreateSurfaces@VA_API_0.34.0' why？can you help me

test example：

test code：

#include <stdio.h>
#include <va/va.h>
#include <va/va_drm.h>
#include <fcntl.h>
void main()
{
        int fd;
        VADisplay _va_dpy;
        fd = open("/dev/dri/card0", O_RDWR);
        printf(" open fd:%d", fd);
        _va_dpy = vaGetDisplayDRM(fd);
        int maj_ver, min_ver;
        vaInitialize(_va_dpy, &maj_ver, &min_ver);
}

gcc test.c -L /usr/local/lib -lva-drm

1.result：(normal user) use http://www.freedesktop.org/software/vaapi/releases/libva/libva-1.2.1.tar.bz2 libva livdrm

[zhaoya@localhost decode]$ ./a.out
libva info: VA-API version 0.34.0
libva info: va_getDriverName() returns 0
 

2.result：(normal user) use  libva libdrm in linux media sdk

[zhaoya@localhost bin]$ ./a.out
libva info: VA-API version 0.34.0
open lib: Invalid argument
libva info: va_getDriverName() returns 1

i try use  libva of official website latest replace it， but have error：libmfxhw64.so: undefined reference to `vaCreateSurfaces@VA_API_0.34.0'