AC_DEFUN(tinc_TUNTAP,
[
-dnl Check for directory with kernel source... (from ALSA)
-AC_CACHE_CHECK([for directory with kernel source], tinc_cv_kerneldir,
-[ AC_ARG_WITH(kernel,
- [ --with-kernel=dir give the directory with kernel sources]
- [ (default: /usr/src/linux)],
- kerneldir="$withval", kerneldir="/usr/src/linux")
- AC_DEFINE_UNQUOTED(CONFIG_TINC_KERNELDIR, "$kerneldir")
- CONFIG_TINC_KERNELDIR="$kerneldir"
- AC_SUBST(CONFIG_TINC_KERNELDIR)
- AC_MSG_RESULT($kerneldir)
-])
AC_CACHE_CHECK([for linux/if_tun.h], tinc_cv_linux_if_tun_h,
-[ AC_TRY_COMPILE([linux/if_tun.h],
+[ AC_TRY_COMPILE([#include <linux/if_tun.h>],
[int a = IFF_TAP],
if_tun_h="linux/if_tun.h",
- [ AC_TRY_COMPILE([$kerneldir/include/linux/if_tun.h],
- [int a = IFF_TAP],
- if_tun_h="$kerneldir/include/linux/if_tun.h",
- if_tun_h="no")
- ])
- if test $if_tun_h = no; then
- AC_MSG_RESULT(none)
+ if_tun_h="no")
+ if test $if_tun_h = no; then
+ tinc_cv_linux_if_tun_h=none
else
AC_DEFINE(HAVE_TUNTAP)
AC_DEFINE_UNQUOTED(LINUX_IF_TUN_H, "$if_tun_h")
AC_SUBST(LINUX_IF_TUN_H)
- AC_MSG_RESULT($if_tun_h)
+ tinc_cv_linux_if_tun_h=$if_tun_h
fi
AC_SUBST(HAVE_TUNTAP)
])