/usr/include/features.h \ /usr/include/sys/cdefs.h /usr/include/gnu/stubs.h \ /usr/lib/gcc-lib/i486-suse-linux/2.95.3/include/stddef.h \ /usr/include/bits/types.h /usr/include/bits/pthreadtypes.h \ /u h /usr/include/wchar.h \ /usr/include/bits/wchar.h /usr/include/gconv.h \ /usr/lib/gcc-lib/i486-suse-linux/2.95.3/include/stdarg.h \ /usr/include/bits/stdio_lim.h gcc -MM main.c 的输出则是: main.o: main