Fix cmakedefine parts and increase cmake version

CMakeLists.txt

-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.16)
 
 # KDE Application Version, managed by release script
 set (RELEASE_SERVICE_VERSION_MAJOR "21")

framebuffers/pipewire/pw_framebuffer.cpp

@@ -39,7 +39,7 @@
 #include "xdp_dbus_remotedesktop_interface.h"
 #include "krfb_fb_pipewire_debug.h"
 
-#if HAVE_DMA_BUF
+#ifdef HAVE_DMA_BUF
 #include <fcntl.h>
 #include <unistd.h>
 

krfb/config-krfb.h.cmake

@@ -11,4 +11,4 @@
 #cmakedefine HAVE_XSHM 1
 
 /* Define if DMA-BUF support is available */
-#cmakedefine HAVE_DMA_BUF 1
+#cmakedefine01 HAVE_DMA_BUF