mi2c.h

来自「linux下编程用 编译软件」· C头文件 代码 · 共 16 行

/* Test for overly eager multiple include optimization.
   Problem distilled from glibc 2.0.7's time.h, sys/time.h, timebits.h. 
   Problem noted by Tom Tromey <[e-mail]>.  */
#ifdef need_x
#undef need_x
#ifndef have_x
#define have_x
extern int x;
#endif
#endif

#ifndef t_h
#define t_h
extern int y;
#endif