Posted By
bubis
on 2017-09-28
11:24:24
|  Re: Android emulator
Guys!
I dream has come true today!
I have managed to compile the latest version of Plus4Emu on Android, and run it with X11 and VNC! It runs at 100% speed without any problem! (I will still need to work on the sound, as plus4emu can't find any sound devices.)
I used the "GNURoot Debian" app that installs a Debian file system and runs it without root privileges.
It turned out the I can "apt-get install ..." everything what plus4emu requires, I only had to make a slight modification to the SConstruct file and it compiled.
Also, I had to make some changes to the GNURoot Debian setup to change the default location of $HOME, so that I can set any permissions on my files.
Nothing can stop me now! 
I am trying to create a walk-through, maybe I will move it somewhere else later, this is the beginning:
0. Install "GNURoot Debian" from Play Store.
URL: https://play.google.com/store/apps/details?id=com.gnuroot.debian&hl=en
1. Here is what you have to install inside "GNURoot Debian" in order to compile plus4emu:
apt-get update
apt-get install gcc
apt-get install scons
apt-get install libfltk1.3-dev
apt-get install libsndfile-dev
apt-get install libsdl-dev
apt-get install portaudio19-dev
apt-get install git
apt-get install sed
2. This is what you do to change the mapping of $HOME:
cd /support
sed -i.bak -e "s/-b /storage/emulated/0/GNURoot/home:/home //g" execInProot
3. Restart GNURoot Debian.
4. Go into your home and download the plus4emu source code like this
cd ~
git clone http://github.com/istvan-v/plus4emu
5. Try to compile, you may have to modify the -mtune option in SConstuct and try again, that depents on your hardware, I did set "arm7" there instead of "generic":
cd plus4emu
cp SConstuct SConstuct.bak # just a backup
scons -j 4
If you have an error, try to find the cpu type of you device in the error message (like arm7) and do this:
sed -i -e "s/generic/arm7/g" SConstuct
scons -j 4
If still doesn't compile:
sed -i -e "s/+ ' -mtune/#/g" SConstuct
scons -j 4
6. Copy the roms
mkdir -p ~/.plus4emu/roms
cp roms/* ~/.plus4emu/roms
7. Click the XTerm icon in GNURoot Debian. That will (install and) start up an X Window client and a VNC Session that connects to it.
8. Click on the XTerm window in VNC and type:
cd ~/plus4emu
./plus4emu &
9. DONE o/
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