位于Snow Leopard上的FFMpeg的libavformat在哪里？

Question

在获取makefile以查找.c程序的正确库和头文件时出现问题我正在尝试编译。我试图为Apple的HTTP Live Streaming编译一个开源的分段器，它需要libavformat和其他FFMpeg库进行编译。我使用Mac Ports来安装FFMpeg，当我在命令行运行“which ffmpeg”时，它显示的目录是opt/local/bin/ffmpeg，但是在四处搜索之后，这似乎不是该库的目录。

看来，库位于opt/local/include，因为那是我看到头文件的地方。这是我的makefile与疑似目录：

所有： 的gcc -Wall -g live_segmenter.c -o live_segmenter -I /选择/本地/包括-I /选择/ local/bin目录-I /选择/ local/include/libavutil -L/opt/local/include/libavformat -libavformat -L/opt/local/include -libavcodec -L/opt/local/include -libavutil -L/opt/local/include -libavcore -lbz2 - LM -lz -lfaac -lmp3lame -lx264 -lfaad -lpthread

clean: 
rm -f live_segmenter 

这里是输出试图编译后：

gcc -Wall -g live_segmenter.c -o live_segmenter -I/opt/local/include -I/opt/local/bin - I/opt/local/include/libavutil -L/opt/local/include/libavformat -libavformat -L/opt/local/include -libavcodec -L/opt/local/include -libavutil -L/opt/local/include -libavcore -lbz2 -lm -lz -lfaac -lmp3lame -lx264 -lfaad -lpthread

ld: library not found for -libavformat 
collect2: ld returned 1 exit status 
make: *** [all] Error 1 

我也试图运行“的ffmpeg -version”，看看ffmpeg的正确建立，它似乎是这样我已经用完了就做什么的想法。任何帮助或指向正确的方向都会很棒。谢谢！

Answer 1

我认为你有太多 - 我和不够-L。从GCC（1）狮子：

-I dir 
    Add the directory dir to the list of directories to be searched for 
    header files. Directories named by -I are searched before the standard 
    system include directories. If the directory dir is a standard system 
    include directory, the option is ignored to ensure that the default 
    search order for system directories and the special treatment of system 
    headers are not defeated. 

-L dir 
    Add directory dir to the list of directories to be searched for -l. 

-l<libname>是一个连接指令，它告诉LD包括从lib<libname>无论在-L目录列表。

试试这个，而是：

gcc -Wall -g live_segmenter.c -o live_segmenter -I/opt/local/include -L/opt/local/lib -lavcodec -lavutil -lavcore -lbz2 -lm -lz -lfaac -lmp3lame -lx264 -lfaad -lpthread