Changed drastically because it didn't work correctly:

[tinc] / m4 / tuntap.m4

diff --git a/m4/tuntap.m4 b/m4/tuntap.m4
index 975567c..2c1ee35 100644 (file)
--- a/m4/tuntap.m4
+++ b/m4/tuntap.m4
@@ -8,13 +8,16 @@ AC_CACHE_CHECK([for linux/if_tun.h], tinc_cv_linux_if_tun_h,
   if_tun_h="linux/if_tun.h",
   if_tun_h="no")
    if test $if_tun_h = no; then
-    AC_MSG_RESULT(none)
+    tinc_cv_linux_if_tun_h=none
   else
-    AC_DEFINE(HAVE_TUNTAP)
-    AC_DEFINE_UNQUOTED(LINUX_IF_TUN_H, "$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)
 ])
+
+if test $tinc_cv_linux_if_tun_h != none; then
+  AC_DEFINE(HAVE_TUNTAP)
+  AC_DEFINE_UNQUOTED(LINUX_IF_TUN_H, "$tinc_cv_linux_if_tun_h")
+  AC_SUBST(LINUX_IF_TUN_H)
+fi
+AC_SUBST(HAVE_TUNTAP)
 ])