/tmp/ioctl_scan.c:32: warning: "IOC_VOID" redefined
 #define IOC_VOID 0x20000000UL
 
In file included from /usr/include/sys/filio.h:42,
                 from /usr/include/sys/ioctl.h:45,
                 from /tmp/ioctl_scan.c:22:
/usr/include/sys/ioccom.h:48: note: this is the location of the previous definition
 #define IOC_VOID 0x20000000 /* no parameters */
 
/tmp/ioctl_scan.c:33: warning: "IOC_OUT" redefined
 #define IOC_OUT  0x40000000UL
 
In file included from /usr/include/sys/filio.h:42,
                 from /usr/include/sys/ioctl.h:45,
                 from /tmp/ioctl_scan.c:22:
/usr/include/sys/ioccom.h:49: note: this is the location of the previous definition
 #define IOC_OUT  0x40000000 /* copy out parameters */
 
/tmp/ioctl_scan.c:34: warning: "IOC_IN" redefined
 #define IOC_IN   0x80000000UL
 
In file included from /usr/include/sys/filio.h:42,
                 from /usr/include/sys/ioctl.h:45,
                 from /tmp/ioctl_scan.c:22:
/usr/include/sys/ioccom.h:50: note: this is the location of the previous definition
 #define IOC_IN  0x80000000 /* copy in parameters */
 
CC1=0
CC2=0
CC3=0
DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64
cc 8.3 [DragonFly] Release/2019-02-22