__cplusplus        57 include/sys/cdefs.h #if defined(__cplusplus)
__cplusplus        68 include/sys/cdefs.h #if defined(__cplusplus) || defined(__PCC__)
__cplusplus        96 include/sys/param.h #if !defined(__cplusplus)
__cplusplus        46 usr/include/stddef.h #if !defined(__cplusplus)
__cplusplus        49 usr/include/stdio.h #if !defined(__cplusplus)