Hi,all I checkout mplayer source code via subversion,./configure --enable-live,then make but error shows: djstava at Gateway:~/test/mplayer_live$ make cc -MD -MP -Wstrict-prototypes -Wmissing-prototypes -Wundef -Wdisabled-optimization -Wno-pointer-sign -Wdeclaration-after-statement -std=gnu99 -Wall -Wno-switch -Wpointer-arith -Wredundant-decls -O4 -march=native -mtune=native -pipe -ffast-math -fomit-frame-pointer -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -Ilibdvdread4 -I. -D_REENTRANT -I/usr/include/directfb -I/usr/include/ -D_REENTRANT -I/usr/include/freetype2 -I/usr/include/schroedinger-1.0 -I/usr/include/liboil-0.3 -c -o libmpdemux/demux_rtp.o libmpdemux/demux_rtp.cpp cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++ cc1plus: warning: command line option "-Wmissing-prototypes" is valid for Ada/C/ObjC but not for C++ cc1plus: warning: command line option "-Wno-pointer-sign" is valid for C/ObjC but not for C++ cc1plus: warning: command line option "-Wdeclaration-after-statement" is valid for C/ObjC but not for C++ cc1plus: warning: command line option "-std=gnu99" is valid for C/ObjC but not for C++ In file included from libmpdemux/demux_rtp.cpp:30: libmpdemux/demux_rtp_internal.h:33:24: error: liveMedia.hh: No such file or directory libmpdemux/demux_rtp.cpp:32:36: error: BasicUsageEnvironment.hh: No such file or directory libmpdemux/demux_rtp.cpp:35:30: error: GroupsockHelper.hh: No such file or directory In file included from libmpdemux/demux_rtp.cpp:30: libmpdemux/demux_rtp_internal.h:38: error: 'MediaSubsession' has not been declared libmpdemux/demux_rtp_internal.h:40: error: 'MediaSubsession' has not been declared libmpdemux/demux_rtp_internal.h:49: error: 'Boolean' does not name a type libmpdemux/demux_rtp.cpp:41: error: expected ')' before '*' token libmpdemux/demux_rtp.cpp:45: error: ISO C++ forbids declaration of 'FramedSource' with no type libmpdemux/demux_rtp.cpp:45: error: expected ';' before '*' token libmpdemux/demux_rtp.cpp:46: error: expected ';' before 'RTPSource' libmpdemux/demux_rtp.cpp:46: error: ISO C++ forbids declaration of 'RTPSource' with no type libmpdemux/demux_rtp.cpp:46: error: expected ';' before '*' token libmpdemux/demux_rtp.cpp:47: error: expected ';' before 'demuxer_t' libmpdemux/demux_rtp.cpp:53: error: 'Boolean' does not name a type libmpdemux/demux_rtp.cpp:73: error: ISO C++ forbids declaration of 'FramedSource' with no type libmpdemux/demux_rtp.cpp:73: error: expected ';' before '*' token libmpdemux/demux_rtp.cpp:74: error: ISO C++ forbids declaration of 'RTPSource' with no type libmpdemux/demux_rtp.cpp:74: error: expected ';' before '*' token libmpdemux/demux_rtp.cpp:83: error: ISO C++ forbids declaration of 'RTSPClient' with no type libmpdemux/demux_rtp.cpp:83: error: expected ';' before '*' token libmpdemux/demux_rtp.cpp:84: error: ISO C++ forbids declaration of 'SIPClient' with no type libmpdemux/demux_rtp.cpp:84: error: expected ';' before '*' token libmpdemux/demux_rtp.cpp:85: error: ISO C++ forbids declaration of 'MediaSession' with no type libmpdemux/demux_rtp.cpp:85: error: expected ';' before '*' token libmpdemux/demux_rtp.cpp:90: warning: 'typedef' was ignored in this declaration libmpdemux/demux_rtp.cpp:94: error: 'RTSPClient' was not declared in this scope libmpdemux/demux_rtp.cpp:94: error: 'client' was not declared in this scope libmpdemux/demux_rtp.cpp:94: error: expected primary-expression before 'char' libmpdemux/demux_rtp.cpp:94: error: initializer expression list treated as compound expression libmpdemux/demux_rtp.cpp:94: error: expected ',' or ';' before '{' token libmpdemux/demux_rtp.cpp:94: warning: 'openURL_rtsp' defined but not used make: *** [libmpdemux/demux_rtp.o] Error 1 And live555 is installed in /usr/local/lib/ Needs your help! Thanks.