Monthly Archives: January 2023

VoCore2 + Screen: Wireless Display SimHub

Some people asked about if it is possible to make VoCore Screen wirelessly, so no need USB or any connection. I think there is such possible, because in Linux we have USBIP which can remotely connect USB by ethernet or wireless. In windows, it also has one named VirtualHere but not open source.

Then we tried the solution, the result…emm, it works but FPS is not high, for simple page like system information or not frequently changed dashboard, it is stable and good(but we did not have game for real test)

Here is a tutorial about how to try it:

Install VirtualHere on Windows PC

Download link here:


Install VirtualHere on VoCore2

VoCore2 is MIPSEL, so we need to use

And here is a compiled firmware for VoCore2, after upgrade you can directly use.

Connect VoCore2 and Your PC

VoCore2 and Your Computer must in same network. About network setting, please search VoCore2 tutorial in this site.

Open VirtualHere application on your PC, wait a moment, normally it will be detected and show in the menu, VoCore2 automaticlly when they are in same network. Once it shows in the menu, right click and select use the device, then you can use the screen just like it is connected to your computer. Later we will upload a video about how it performance.

OpenWrt: Build dependency problem

Recently compile openwrt 18.06.9, get this error:

Build dependency: Please install the GNU C Compiler (gcc) 4.8 or later
Build dependency: Please install the GNU C++ Compiler (g++) 4.8 or later

I can not do any further process. But my GCC is pretty new 11.3.0

gcc --version
gcc (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO

So its report is absolutely something not right.

PS: I already can image some lazy coder just compare the first byte of gcc version, so it must think my gcc version is ‘1.x’ but not ’11.x’, so report such stupid error.

Easy to fix, just delete the check it will back to work, I have checked by my eye it is 11.x but not 1.x. Sorry about this dirty fix, I am also one of the lazy coder and even worse I am not good at script. :p

--- a/include/
+++ b/include/
@@ -26,31 +26,12 @@ $(eval $(call TestHostCommand,proper-umask, \
        Please build with umask 022 - other values produce broken packages, \
        umask | grep -xE 0?0[012][012]))
-$(eval $(call SetupHostCommand,gcc, \
-       Please install the GNU C Compiler (gcc) 4.8 or later, \
-       $(CC) -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?|10\.?)', \
-       gcc -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?|10\.?)', \
-       gcc --version | grep -E 'Apple.(LLVM|clang)' ))
 $(eval $(call TestHostCommand,working-gcc, \
        \nPlease reinstall the GNU C Compiler (4.8 or later) - \
        it appears to be broken, \
        echo 'int main(int argc, char **argv) { return 0; }' | \
                gcc -x c -o $(TMP_DIR)/a.out -))
-$(eval $(call SetupHostCommand,g++, \
-       Please install the GNU C++ Compiler (g++) 4.8 or later, \
-       $(CXX) -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?|10\.?)', \
-       g++ -dumpversion | grep -E '^(4\.[8-9]|[5-9]\.?|10\.?)', \
-       g++ --version | grep -E 'Apple.(LLVM|clang)' ))
-$(eval $(call TestHostCommand,working-g++, \
-       \nPlease reinstall the GNU C++ Compiler (4.8 or later) - \
-       it appears to be broken, \
-       echo 'int main(int argc, char **argv) { return 0; }' | \
-               g++ -x c++ -o $(TMP_DIR)/a.out - -lstdc++ && \
-               $(TMP_DIR)/a.out))
 $(eval $(call TestHostCommand,ncurses, \
        Please install ncurses. (Missing or ncurses.h), \
        echo 'int main(int argc, char **argv) { initscr(); return 0; }' | \

PS: I meet tons of problem after this, like m4 compatible error, and gdb8 need python2, so for simple, just download latest openwrt and copy the tools Makefile to replace the old bones, it will back to work.