[Ffmpeg-devel] build fails: dlopen undefined in libavcodec

[sean]

Building today's cvs on amd64, gcc-4.0.1, Fedora 4:

gcc -Wl,--warn-common -rdynamic -g  -o ffmpeg_g ffmpeg.o 
cmdutils.o -L./libavformat -lavformat -L./libavcodec 
-lavcodec -lm -lz -lpthread -lvorbisenc -lvorbis -logg 
-lfaac -lxvidcore
./libavcodec/libavcodec.so: undefined reference to `dlerror'
./libavcodec/libavcodec.so: undefined reference to `dlclose'
./libavcodec/libavcodec.so: undefined reference to `dlopen'
./libavcodec/libavcodec.so: undefined reference to `dlsym'
collect2: ld returned 1 exit status

 From config.h:

#define CONFIG_HAVE_DLOPEN 1
#define CONFIG_HAVE_DLFCN 1

If --extra-ldflags='-ldl', it builds. I nosed around 
configure, but can't figure out what goes wrong.

sean