Strange error message when compiling svn package

[Rodolfo Medina <rodolfo.medina@gmail.com>]

Hi to all Debian users.

When compiling Mplayer svn with `make', I got the following:


[...]
file.c:23:5: warning: "HAVE_MMAP" is not defined
file.c: In function 'av_file_map':
file.c:47: error: 'HAVE_MMAP' undeclared (first use in this function)
file.c:47: error: (Each undeclared identifier is reported only once
file.c:47: error: for each function it appears in.)
file.c:74:5: warning: "HAVE_MMAP" is not defined
file.c:100:5: warning: "HAVE_MMAP" is not defined
make[1]: *** [file.o] Error 1
make[1]: Leaving directory `/home/rodolfo/tmp/mplayer/ffmpeg/libavutil'
make: *** [ffmpeg/libavutil/libavutil.a] Error 2


I have no idea of what this means, and googling around didn't help me.  Any
idea of how I can work this out?

Thanks for any help
Rodolfo