[root@videocheck ffmpeg]# ./configure --enable-libmp3lame --enable-gpl --enable-libfaac --enable-libfaad --enable-libfaadbin
ERROR: libfaad not found
If you think configure made a mistake, make sure you are using the latest
version from SVN.  If the latest version fails, report the problem to the
ffmpeg-devel@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.err" produced by configure as this will help
solving the problem.

check_cc
BEGIN /tmp/ffmpeg-conf-25217-31524-29303.c
     1  
     2  #include <faad.h>
     3  int main(){
     4      (void) faacDecOpen;
     5      return 0;
     6  }
END /tmp/ffmpeg-conf-25217-31524-29303.c
gcc -fomit-frame-pointer -c -o /tmp/ffmpeg-conf-17813-31524-32564.o /tmp/ffmpeg-conf-25217-31524-29303.c
/tmp/ffmpeg-conf-25217-31524-29303.c: In function `main':
/tmp/ffmpeg-conf-25217-31524-29303.c:4: `faacDecOpen' undeclared (first use in this function)
/tmp/ffmpeg-conf-25217-31524-29303.c:4: (Each undeclared identifier is reported only once
/tmp/ffmpeg-conf-25217-31524-29303.c:4: for each function it appears in.)
ERROR: libfaad not found

[root@videocheck ffmpeg]# rpm -qa|grep -i faad
faad2-2.5-7.el3.at
faad2-devel-2.5-2.el3.rf
faad2-debuginfo-2.5-1.el3.rf