doxygen: fix time64 support and cross build (wizard)

srcpkgs/doxygen/patches/fix-time64.patch

@@ -0,0 +1,19 @@
+--- qtools/qdatetime.cpp	2020-01-03 23:51:18.000000000 +0100
++++ qtools/qdatetime.cpp	2020-12-02 10:48:03.245635836 +0100
+@@ -35,7 +35,6 @@
+ **
+ **********************************************************************/
+ 
+-#define gettimeofday	__hide_gettimeofday
+ #include "qdatetime.h"
+ #include "qdatastream.h"
+ #include <stdio.h>
+@@ -55,8 +54,6 @@
+ #elif defined(_OS_UNIX_) || defined(_OS_MAC_)
+ #include <sys/time.h>
+ #include <unistd.h>
+-#undef	gettimeofday
+-extern "C" int gettimeofday( struct timeval *, struct timezone * );
+ #endif
+ 
+ static const uint FIRST_DAY	= 2361222;	// Julian day for 1752/09/14

srcpkgs/doxygen/template

@@ -18,6 +18,7 @@ desc_option_wizard="build Qt5 GUI configuration tool, doxywizard"
 
 if [ "$build_option_wizard" ]; then
 	configure_args+=" -Dbuild_wizard=1"
+	hostmakedepends+=" qt5-host-tools qt5-qmake"
 	makedepends+=" qt5-devel"
 fi