I'm trying to compile quakeforge it configures it self perfectly with no errors but when i run make i get this,

cd_file.c:87: error: static declaration of 'bgmvolume' follows non-static declaration
../../../include/QF/sound.h:126: error: previous declaration of 'bgmvolume' was here
make[3]: *** [cd_file.lo] Error 1
make[3]: Leaving directory `/root/quakeforge-0.5.5/libs/audio/cd'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/root/quakeforge-0.5.5/libs/audio'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/quakeforge-0.5.5/libs'
make: *** [all-recursive] Error 1
[root@localhost quakeforge-0.5.5]#

could anybody offer some suggestions thank you