X-Git-Url: https://git.librecmc.org/?p=oweals%2Ftinc.git;a=blobdiff_plain;f=m4%2Ftuntap.m4;h=8c14a9bcb179f8339bfd1de42461c9966015fedb;hp=dcf3a15273c6fbfee3ea6e44446a9160b07ab65f;hb=fcd836c609568fab323f4af6dd525de957a6f4cc;hpb=f2aa7466e6db9777090583ef26d923fc0a4fcea8

diff --git a/m4/tuntap.m4 b/m4/tuntap.m4
index dcf3a15..8c14a9b 100644
--- a/m4/tuntap.m4
+++ b/m4/tuntap.m4
@@ -1,22 +1,28 @@
 dnl Check to find out whether the running kernel has support for TUN/TAP
 
-AC_DEFUN(tinc_TUNTAP,
+AC_DEFUN([tinc_TUNTAP],
 [
   AC_ARG_WITH(kernel,
-    AC_HELP_STRING([--with-kernel=DIR], [give the directory with kernel sources (default: /usr/src/linux)]),
+    AS_HELP_STRING([--with-kernel=DIR], [give the directory with kernel sources (default: /usr/src/linux)]),
     kerneldir="$withval",
     kerneldir="/usr/src/linux"
   )
   
   AC_CACHE_CHECK([for linux/if_tun.h], tinc_cv_linux_if_tun_h,
   [ 
-    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"
+    AC_COMPILE_IFELSE(
+      AC_LANG_PROGRAM([
+        #include "$kerneldir/include/linux/if_tun.h"
+	int a = IFF_TAP;
+      ]),
+      [if_tun_h="\"$kerneldir/include/linux/if_tun.h\""],
+      [AC_COMPILE_IFELSE(
+        AC_LANG_PROGRAM([
+	  #include <linux/if_tun.h>
+          int a = IFF_TAP;
+	]),
+        [if_tun_h="default"],
+        [if_tun_h="no"]
       )]
     )