> sorry dint change the subject line..... :-) I was reading the list from bottom up. Please ignore my previous mail. Hi guys, > >I have downloaded libmad-0.15.1b.tar.gz from ftp://ftp.mars.org/pub/mpeg/ >>then I execute ./configure --prefix=/usr >It says>>>>> configure: error: C++ preprocessor "/lib/cpp" fails sanity check > >then i downloaded libmad-0.15.0b.tar.gz >In this configure step was fine but after that when i did make it gives following error: >cc1: error: unrecognized command line option "-fforce-mem" > >how can i get rid of this and install libmad on my ubuntu pc. >> > >thanks >