-[ AC_TRY_COMPILE([#include <linux/if_tun.h>],
- [int a = IFF_TAP],
- if_tun_h="linux/if_tun.h",
- if_tun_h="no")
- if test $if_tun_h = no; then
- AC_MSG_RESULT(none)
+[
+ AC_TRY_COMPILE([#include "$kerneldir/include/linux/if_tun.h"],
+ [int a = IFF_TAP;],
+ if_tun_h="\"$kerneldir/include/linux/if_tun.h\"",
+ [AC_TRY_COMPILE([#include <linux/if_tun.h>],
+ [int a = IFF_TAP;],
+ if_tun_h="default",
+ if_tun_h="no"
+ )]
+ )
+
+ if test $if_tun_h = no; then
+ tinc_cv_linux_if_tun_h=none