您好，我是新手，我不明白，这是怎么回事。我的 iPhone 需要mtree，但出现错误。这就是我得到的：
In file included from compare.c:62:
vis.h:43: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘size_t’
In file included from compare.c:65:
extern.h:52: warning: redundant redeclaration of ‘compare’
extern.h:40: warning: previous declaration of ‘compare’ was here
extern.h:59: warning: redundant redeclaration of ‘getmode’
/usr/include/unistd.h:700: warning: previous declaration of ‘getmode’ was here
extern.h:60: warning: redundant redeclaration of ‘setmode’
/usr/include/unistd.h:736: warning: previous declaration of ‘setmode’ was here
compare.c: In function ‘compare’:
compare.c:186: error: ‘struct stat’ has no member named ‘st_mtim’
compare.c:187: error: ‘struct stat’ has no member named ‘st_mtim’
compare.c:192: error: ‘struct stat’ has no member named ‘st_mtim’
make[1]: *** [compare.o] Error 1
make: *** [all] Error 2