c++ - ffmpeg 错误 - 未定义整体

Question

我在清晰的 lubuntu 上编译了 ffmpeg，并在 eclipse 中将库附加到我的项目时出现了一堆错误:

/usr/local/lib//libavformat.a(mov.o): In function `mov_read_sbgp':
/root/ffmpeg/libavformat/mov.c:2039: undefined reference to `av_malloc'
/usr/local/lib//libavformat.a(mov.o): In function `mov_read_dac3':
/root/ffmpeg/libavformat/mov.c:647: undefined reference to `avpriv_ac3_channel_layout_tab'
/usr/local/lib//libavformat.a(mov.o): In function `mov_read_tfhd':
/root/ffmpeg/libavformat/mov.c:2559: undefined reference to `av_log'
/usr/local/lib//libavformat.a(mov.o): In function `mov_read_stts':
/root/ffmpeg/libavformat/mov.c:1908: undefined reference to `av_malloc'
/root/ffmpeg/libavformat/mov.c:1921: undefined reference to `av_log'
/root/ffmpeg/libavformat/mov.c:1925: undefined reference to `av_log'
/usr/local/lib//libavformat.a(mov.o): In function `mov_read_stss':
/root/ffmpeg/libavformat/mov.c:1790: undefined reference to `av_malloc'
/usr/local/lib//libavformat.a(mov.o): In function `mov_read_stsc':
/root/ffmpeg/libavformat/mov.c:1712: undefined reference to `av_malloc'

这只是输出的一部分..somoone 可以帮我处理那个工作人员吗？我被困在这里了，谢谢。

我还给你一些关于 ld --verbose -l avformat 的信息:

attempt to open /usr/i686-linux-gnu/lib32/libavformat.so failed
attempt to open /usr/i686-linux-gnu/lib32/libavformat.a failed
attempt to open /usr/local/lib32/libavformat.so failed
attempt to open /usr/local/lib32/libavformat.a failed
attempt to open /lib32/libavformat.so failed
attempt to open /lib32/libavformat.a failed
attempt to open /usr/lib32/libavformat.so failed
attempt to open /usr/lib32/libavformat.a failed
attempt to open /usr/local/lib/i386-linux-gnu/libavformat.so failed
attempt to open /usr/local/lib/i386-linux-gnu/libavformat.a failed
attempt to open /usr/local/lib/libavformat.so failed
attempt to open /usr/local/lib/libavformat.a succeeded
ld: warning: cannot find entry symbol _start; not setting start address

avutil 的一切都会出现问题……所有 undefined reference 都来自 libavutil 的文件。但我不知道为什么以及该怎么做。

Answer 1

通过给予的帮助，我设法解决了问题，所以让我与您分享。用于编译指南

How to set up ffmpeg for dev

使用此链接顺序:

avdevice
avfilter
postproc
avformat
avcodec
rt
dl
Xfixes
Xext
X11
asound
SDL
vorbisenc
vorbis
theoraenc
theoradec
ogg
opencore-amrwb
opencore-amrnb
z
rt
swresample
swscale
avutil
m
z
swresample
faac
mp3lame
vpx
x264
xvidcore
pthread