我正在从源代码在 Snow Leopard 上编译 ffmpeg。使用 Macport 不是一个选项,因为我在 ffmpeg 中有一些自定义修改。制作命令是:
$ ./configure --enable-gpl --enable-libmp3lame --enable-static \
--disable-shared --enable-libx264 --enable-pthreads \
--disable-doc --enable-avfilter
$ make
错误:
CC ffplay.o
ffplay.c: In function ‘SDL_main’:
ffplay.c:3157: warning: assignment discards qualifiers from pointer target type
LD ffplay_g
Undefined symbols for architecture x86_64:
"_x264_encoder_open_112", referenced from:
_X264_init in libavcodec.a(libx264.o)
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
make: *** [ffplay_g] Error 1
我已经从源代码编译了 libx264,效果很好。
$ cd x264-snapshot-20101228-2245; ./configure && make && sudo make install
...它包含符号“_x264_encoder_open_112”
$ nm ./libx264.a | grep _x264_encoder_open_112
0000000000003ef0 T _x264_encoder_open_112
000000000000d7b0 S _x264_encoder_open_112.eh
可能出了什么问题?