[vorbis] error when compiling oggplay

[RKTMB M A]

Hi every body , i try to compile oggplayer but :
"./autogen.sh --prefix=/usr " is OK and 
"make" :
oggplay.c: At top level:
oggplay.c:377: parse error before "mymngsettimer"
oggplay.c:377: parse error before "mng"
oggplay.c: In function `mymngsettimer':
oggplay.c:379: `stuff' undeclared (first use in this function)
oggplay.c:384: parse error before ')' token
oggplay.c:387: `msecs' undeclared (first use in this function)
oggplay.c:389: `MNG_TRUE' undeclared (first use in this function)
oggplay.c: At top level:
oggplay.c:393: parse error before "mymngerror"
oggplay.c:393: parse error before "mng"
oggplay.c: In function `mymngerror':
oggplay.c:397: `stuff' undeclared (first use in this function)
oggplay.c:401: parse error before ')' token
oggplay.c:405: `chunktype' undeclared (first use in this function)
oggplay.c:413: `chunkseq' undeclared (first use in this function)
oggplay.c:414: `text' undeclared (first use in this function)
oggplay.c: At top level:
oggplay.c:419: parse error before "mng"
oggplay.c: In function `mymngquit':
oggplay.c:421: `stuff' undeclared (first use in this function)
oggplay.c:424: parse error before ')' token
oggplay.c:427: `mng' undeclared (first use in this function)
oggplay.c: At top level:
oggplay.c:436: parse error before "mng"
oggplay.c: In function `checkevents':
oggplay.c:448: `mng' undeclared (first use in this function)
oggplay.c: In function `main':
oggplay.c:464: `stuff' undeclared (first use in this function)
oggplay.c:465: `mng_handle' undeclared (first use in this function)
oggplay.c:465: parse error before "mng"
oggplay.c:474: parse error before ')' token
oggplay.c:484: `mng' undeclared (first use in this function)
oggplay.c:484: `MNG_NULL' undeclared (first use in this function)
make: *** [oggplay.o] Error 1

Ogg and vorbis are already installed ....
What should i do ?

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