"OS.c", line 59.24: 1506-194 (S) Incomplete type is not allowed.
"OS.c", line 60.10: 1506-007 (S) "struct userinfo" is undefined.
"OS.c", line 71.41: 1506-043 (S) The operand of the sizeof operator is not valid.
"OS.c", line 112.34: 1506-043 (S) The operand of the sizeof operator is not valid.
"OS.c", line 113.34: 1506-043 (S) The operand of the sizeof operator is not valid.
"OS.c", line 161.32: 1506-043 (S) The operand of the sizeof operator is not valid.
gmake[2]: *** [OS.o] Error 1