ffmpeg应用程序编译出错

[小听风]

写了一个例子，调用ffmpeg的函数。编译出现以下错误，gcc版本gcc (Ubuntu/Linaro 4.6.4-1ubuntu1~10.04) 4.6.4：


sample.c: In function ‘main’:
sample.c:130:7: warning: passing argument 2 of ‘sws_scale’ from incompatible pointer type [enabled by default]
/usr/local/include/libswscale/swscale.h:224:5: note: expected ‘const uint8_t * const*’ but argument is of type ‘uint8_t **’
/usr/bin/ld: cannot find -ld
collect2: ld returned 1 exit status