How to create a new project with addons on the raspberrypi

maw · December 2, 2013, 12:16am

Hi guys,

I’m trying to create a new project based on http://learn.adafruit.com/creepy-face-tracking-portrait/future-work
But I’d like to add a new addon to it (box2d). But I’m not sure how to do that and can’t find help as every site tells me to use the project generator (which I can’t find or can’t get working for the raspi?!)

I tried it by copying the creepyface project and add the box2d addon inside of it (myProject/addons/ofBox2d) but when I try to compile (make) I get at some point errors (here are the last couple of lines before it stops compiling)

obj/linuxarmv6l/Release/addons/ofxBox2d/src/ofxBox2dBaseShape.o: In function ofxBox2dBaseShape::setRotation(float)': ofxBox2dBaseShape.cpp:(.text+0x798): undefined reference tob2Body::SetTransform(b2Vec2 const&, float)’
collect2: ld returned 1 exit status
make[1]: *** [bin/shapeFinder] Error 1
make: *** [Release] Error 2

I hope someone can help! Thank you in advance!
Kind regards
Marcel

jvcleave · December 2, 2013, 5:58am

try this:
take ofxBox2d out of myProject/addons/ofBox2d and put it into openframeworks/addons/ofBox2d

in the file called addons.make add this single line

ofxBox2d

addons.make is somewhat of a magic file to the OF Make system (also used in the examples/addons) that allows you to use many ofxAddons just by adding the name (one per line)

maw · December 3, 2013, 1:04pm

it worked perfectly fine, thank you very much

maw · December 3, 2013, 1:10pm

maybe I’ll add a follow-up question here: Can anyone recommend a way to speed up compiling on the raspi e.g. with a mac?

jvcleave · December 3, 2013, 4:40pm

here are some instructions on getting distcc to work on the mac

gist.github.com

https://gist.github.com/jvcleave/7149545

distccd-rpi.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
	<dict>
		<key>Label</key>
		<string>distccd-rpi</string>
		<key>Program</key>
		<string>/Users/YOUR_USER_NAME/Scripts/launchd-distccd.sh</string>
		<key>RunAtLoad</key>
		<true/>

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install instructions.sh

#ON THE RASPBERRY PI

$ sudo apt-get install distcc

$ nano ~/.profile 

#insert as last line, CTRL+O to save, CTRL+X to exit
export MAKEFLAGS="-j 64 CC=distcc arm-linux-gcc CXX=distcc arm-linux-g++"

$ source ~/.profile

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install.sh

#!/bin/bash

PKG=~/Desktop/arm-linux-gnueabihf.pkg
 
if [ -f $PKG ];
then
   echo "$PKG exists"
else
   echo "$PKG does not exist"
   cd ~/Desktop

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they should be considered “beta” but I have been able to use them on a few machines

maw · December 17, 2013, 2:13pm

Thanks for your answer!!
is it important to first do the steps on the raspberry and then on the mac?
I tried to follow the steps on the mac first, as I don’t have the raspi with me right now
but when I try to install arm-linux-gnueabihf.pkg I get the following error:

/Desktop/arm-linux-gnueabihf.pkg exists
Warning: Your Xcode (4.6.2) is outdated
Please update to Xcode 5.0.1.
Xcode can be updated from the App Store.
Warning: distcc-3.2rc1 already installed
installer: Package name is arm-linux-gnueabihf Toolchain
installer: Installing at base path /
installer: The install failed

jvcleave · December 18, 2013, 4:57am

I’m not sure - did it ask you for your password and maybe you mistyped it?