CMake: detect mmap() and write result to rfbconfig.h

CMakeLists.txt

@@ -151,6 +151,7 @@ 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)
+check_function_exists(mmap            LIBVNCSERVER_HAVE_MMAP)
 
 
 # On systems such as GNU/Linux with glibc, __b64_ntop is defined in a

rfb/rfbconfig.h.cmake

@@ -72,6 +72,9 @@
 /* Define to 1 if `vfork' works. */
 #cmakedefine LIBVNCSERVER_HAVE_WORKING_VFORK  1 
 
+/* Define to 1 if `mmap' exists. */
+#cmakedefine LIBVNCSERVER_HAVE_MMAP  1 
+
 /* Define to 1 if you have the <ws2tcpip.h> header file. */
 #cmakedefine LIBVNCSERVER_HAVE_WS2TCPIP_H  1