环境Qt(ubuntu12.04) undefined reference to `av_frame_free'

599934418

环境Qt(ubuntu12.04) .pro文件中添加了库的路径: INCLUDEPATH +=  ./usr/local/include LIBS += -L./usr/local/lib/ -lavcodec  \         -L./usr/local/lib/  -lavformat \         -L./usr/local/lib/  -lavutil   \         -L./usr/local/lib/  -lavfilter \         -L./usr/local/lib/  -lavdevice \         -L./usr/local/lib/  -lpostproc \         -L./usr/local/lib/  -lswresample\         -L./usr/local/lib/  -lswscale main.c包含的头文件: #include <stdio.h> #include <stdlib.h> #include "libavcodec/avcodec.h" #include "libavformat/avformat.h" #include "libswscale/swscale.h" #include "libavutil/pixfmt.h" 编译的时候出现如下问题： /home/exbot/Desktop/Qt/jiankong-build-desktop-Qt_4_8_1_in_PATH__System__Debug/../jiankong/main.c:69: error: undefined reference to `av_frame_alloc' /home/exbot/Desktop/Qt/jiankong-build-desktop-Qt_4_8_1_in_PATH__System__Debug/../jiankong/main.c:115: error: undefined reference to `av_frame_free'

错误

nilyang

我是在windows 上开发，直接把ffmpeg（lib、include）放在qt工程目录下的

INCLUDEPATH += $$PWD/ffmpeg/include
DEPENDPATH += $$PWD/ffmpeg/include


LIBS += $$PWD/ffmpeg/lib/libavcodec.dll.a \
        $$PWD/ffmpeg/lib/libavdevice.dll.a \
        $$PWD/ffmpeg/lib/libavfilter.dll.a \
        $$PWD/ffmpeg/lib/libavformat.dll.a \
        $$PWD/ffmpeg/lib/libavutil.dll.a \
        $$PWD/ffmpeg/lib/libpostproc.dll.a \
        $$PWD/ffmpeg/lib/libswresample.dll.a \
        $$PWD/ffmpeg/lib/libswscale.dll.a