diff --git a/NEWS b/NEWS
index 0955abb..a7a7ca3 100644
--- a/NEWS
+++ b/NEWS
@@ -7,7 +7,7 @@
 Version 0.8
 ===========
 
- * Solaris support.
+ * Support for compilation under Solaris.
  * Iptables firewall script.
 
 Version 0.7
diff --git a/README b/README
index d85582e..3a254a5 100644
--- a/README
+++ b/README
@@ -9,11 +9,11 @@
 Requirements
 ------------
 
-*Linux*
-OpenGGSN was developed and tested using Redhat 8.0 and 9.0 and Solaris
-2.8. It should run also on other Linux distributions as well as
-FreeBSD, but this is untested. Please tell me of any
-testing results.
+*Linux* 
+OpenGGSN was developed and tested using Redhat 8.0 and 9.0. It should
+run also on other Linux distributions as well as FreeBSD, but this is
+untested. Compilation on Solaris 2.8 has also been verified. Please
+tell me of any testing results.
 
 *Tun*
 The tun driver is required for proper operation of openggsn. For linux
diff --git a/acinclude.m4 b/acinclude.m4
new file mode 100644
index 0000000..2aea10b
--- /dev/null
+++ b/acinclude.m4
@@ -0,0 +1,17 @@
+dnl Available from the GNU Autoconf Macro Archive at:
+dnl http://www.gnu.org/software/ac-archive/htmldoc/adl_func_getopt_long.html
+dnl
+AC_DEFUN([adl_FUNC_GETOPT_LONG],
+ [AC_PREREQ(2.49)dnl
+  # clean out junk possibly left behind by a previous configuration
+  rm -f lib/getopt.h
+  # Check for getopt_long support
+  AC_CHECK_HEADERS([getopt.h])
+  AC_CHECK_FUNCS([getopt_long],,
+   [# FreeBSD has a gnugetopt library for this
+    AC_CHECK_LIB([gnugetopt],[getopt_long],[AC_DEFINE([HAVE_GETOPT_LONG])],
+     [# use the GNU replacement
+      AC_LIBOBJ(getopt)
+      AC_LIBOBJ(getopt1)
+      AC_CONFIG_LINKS([ggsn/getopt.h:ggsn/gnugetopt.h])
+      AC_CONFIG_LINKS([sgsnemu/getopt.h:sgsnemu/gnugetopt.h])])])])
diff --git a/ggsn/ggsn.c b/ggsn/ggsn.c
index 0728261..b75b01d 100644
--- a/ggsn/ggsn.c
+++ b/ggsn/ggsn.c
@@ -47,6 +47,8 @@
 
 #include <time.h>
 
+#include "config.h"
+
 #include "tun.h"
 #include "ippool.h"
 #include "syserr.h"
@@ -328,7 +330,7 @@
   }
 
   /* DNS1 and DNS2 */
-#ifndef HAVE_INET_ATON
+#ifdef HAVE_INET_ATON
   dns1.s_addr = 0;
   if (args_info.pcodns1_arg) {
     if (0 == inet_aton(args_info.pcodns1_arg, &dns1)) {
@@ -346,11 +348,10 @@
     }
   }
 #else
-#ifndef HAVE_INET_ADDR
   dns1.s_addr = 0;
   if (args_info.pcodns1_arg) {
-    dns1 = inet_addr(args_info.pcodns1_arg);
-    if (dns1.s_addr == INADDR_NONE)  {
+    dns1.s_addr = inet_addr(args_info.pcodns1_arg);
+    if (dns1.s_addr == -1)  {
       sys_err(LOG_ERR, __FILE__, __LINE__, 0,
 	      "Failed to convert pcodns1!");
       exit(1);
@@ -358,16 +359,13 @@
   }
   dns2.s_addr = 0;
   if (args_info.pcodns2_arg) {
-    dns2 = inet_addr(args_info.pcodns2_arg);
-    if (dns2.s_addr == INADDR_NONE) {
+    dns2.s_addr = inet_addr(args_info.pcodns2_arg);
+    if (dns2.s_addr == -1) {
       sys_err(LOG_ERR, __FILE__, __LINE__, 0,
 	      "Failed to convert pcodns2!");
       exit(1);
     }
   }
-#else
-#error Function missing!
-#endif
 #endif
 
 
diff --git a/sgsnemu/sgsnemu.c b/sgsnemu/sgsnemu.c
index c655ef1..fbed846 100644
--- a/sgsnemu/sgsnemu.c
+++ b/sgsnemu/sgsnemu.c
@@ -48,6 +48,7 @@
 #include <resolv.h>
 #include <time.h>
 
+#include "config.h"
 #include "tun.h"
 #include "ippool.h"
 #include "syserr.h"
@@ -932,7 +933,7 @@
 
   if ((options.createif) && (!options.net.s_addr)) {
     struct in_addr m;
-#ifndef HAVE_INET_ATON
+#ifdef HAVE_INET_ATON
     inet_aton("255.255.255.255", &m);
 #else
     m.s_addr = INADDR_NONE;