必須要封裝osa適配層了，兩者有些API有差異，靠單純的換頭文件搞不定。
比如妳想同時在linux和windows上使用stat這個函數，同樣是包含#include<sys/stat.h>，但是stat的結構體根本就不壹樣。
linux版本：
typedef?struct?stat{
unsigned?long?st_dev;?/*?device?ID?number?*/ unsigned?long?st_ino;?/*?file?serial?number?*/ unsigned?short?st_mode;?/*?file?mode?(see?below)?*/ short?st_nlink;?/*?number?of?links?to?file?*/ short?st_uid;?/*?user?ID?of?file's?owner?*/ short?st_gid;?/*?group?ID?of?file's?group?*/ unsigned?long?st_rdev;?/*?device?ID,?only?if?special?file?*/ unsigned?long?st_size;?/*?size?of?file,?in?bytes?*/ unsigned?long?st_atime;?/*?time?of?last?access?*/ unsigned?long?st_mtime;?/*?time?of?last?modification?*/ unsigned?long?st_ctime;?/*?time?of?last?change?of?file?status?*/ long?st_blksize; long?st_blocks; unsigned?int?st_attrib;?/*?file?attribute?byte?(dosFs?only)?*/}stat_type;
windows版本：
struct?stat?{_dev_t?st_dev;
_ino_t?st_ino;
unsigned?short?st_mode;
short?st_nlink;
short?st_uid;
short?st_gid;
_dev_t?st_rdev;
_off_t?st_size;
time_t?st_atime;
time_t?st_mtime;
time_t?st_ctime;
};