Append IPv6 option in CMake Project

CMakeLists.txt

@@ -133,14 +133,21 @@ check_include_file("sys/time.h"    LIBVNCSERVER_HAVE_SYS_TIME_H)
 check_include_file("sys/types.h"   LIBVNCSERVER_HAVE_SYS_TYPES_H)
 check_include_file("sys/wait.h"    LIBVNCSERVER_HAVE_SYS_WAIT_H)
 check_include_file("unistd.h"      LIBVNCSERVER_HAVE_UNISTD_H)
-
-# headers needed for check_type_size()
+check_include_file("vfork.h"       LIBVNCSERVER_HAVE_VFORK_H)
+check_include_file("ws2tcpip.h"    LIBVNCSERVER_HAVE_WS2TCPIP_H)
 check_include_file("arpa/inet.h"   HAVE_ARPA_INET_H)
 check_include_file("stdint.h"      HAVE_STDINT_H)
 check_include_file("stddef.h"      HAVE_STDDEF_H)
 check_include_file("sys/types.h"   HAVE_SYS_TYPES_H)
 
 check_function_exists(gettimeofday    LIBVNCSERVER_HAVE_GETTIMEOFDAY)
+check_function_exists(vfork           LIBVNCSERVER_HAVE_VFORK)
+check_function_exists(vprintf         LIBVNCSERVER_HAVE_VPRINTF)
+
+
+if(LIBVNCSERVER_HAVE_WS2TCPIP_H AND LIBVNCSERVER_HAVE_VPRINTF)
+	option(LIBVNCSERVER_IPv6 "Enable IPv6 Support" ON)
+endif()
 
 if(CMAKE_USE_PTHREADS_INIT)
   set(LIBVNCSERVER_HAVE_LIBPTHREAD 1)

rfb/rfbconfig.h.cmake

@@ -54,6 +54,27 @@
 /* Define to 1 if you have the <unistd.h> header file. */
 #cmakedefine LIBVNCSERVER_HAVE_UNISTD_H  1 
 
+/* Define to 1 if you have the `vfork' function. */
+#cmakedefine LIBVNCSERVER_HAVE_VFORK  1 
+
+/* Define to 1 if you have the <vfork.h> header file. */
+#cmakedefine LIBVNCSERVER_HAVE_VFORK_H  1 
+
+/* Define to 1 if you have the `vprintf' function. */
+#cmakedefine LIBVNCSERVER_HAVE_VPRINTF  1 
+
+/* Define to 1 if `fork' works. */
+#cmakedefine LIBVNCSERVER_HAVE_WORKING_FORK  1 
+
+/* Define to 1 if `vfork' works. */
+#cmakedefine LIBVNCSERVER_HAVE_WORKING_VFORK  1 
+
+/* Define to 1 if you have the <ws2tcpip.h> header file. */
+#cmakedefine LIBVNCSERVER_HAVE_WS2TCPIP_H  1 
+
+/* Enable IPv6 support */
+#cmakedefine LIBVNCSERVER_IPv6  1 
+
 /* Need a typedef for in_addr_t */
 #cmakedefine LIBVNCSERVER_NEED_INADDR_T 1