mrsmiley@artemis:~/sfbg/osskmix/src$ make clean
rm -f *.o *.moc osskmix
mrsmiley@artemis:~/sfbg/osskmix/src$ make
c++ -O2 -fno-strict-aliasing -pipe  -I/usr/X11R6/include -I/usr/local/include -c -o main.o main.cpp
In file included from oklabelbox.h:9,
                 from osskmix.h:32,
                 from main.cpp:5:
okmixmeta.h:8: error: ISO C++ forbids declaration of `oss_mixext' with no type
okmixmeta.h:8: error: expected `;' before '*' token
In file included from main.cpp:5:
osskmix.h:71: error: expected `,' or `...' before '*' token
osskmix.h:71: error: ISO C++ forbids declaration of `oss_mixext' with no type
osskmix.h:72: error: expected `,' or `...' before '*' token
osskmix.h:72: error: ISO C++ forbids declaration of `oss_mixext' with no type
osskmix.h:84: error: ISO C++ forbids declaration of `oss_mixext' with no type
osskmix.h:84: error: expected `;' before '*' token
osskmix.h:85: error: ISO C++ forbids declaration of `oss_mixext_root' with no type
osskmix.h:85: error: expected `;' before '*' token
*** Error code 1

Stop in /home/mrsmiley/sfbg/osskmix/src.
mrsmiley@artemis:~/sfbg/osskmix/src$