Installing qemu-arm-eabi patch into Scratchbox
Posted on Fri 16 November 2007 in HowTo, Linux, Maemo (EN), Programmazione • Tagged with maemo, qemu, scratchbox, SDK
Using Scratchbox and in particular the Maemo SDK with ARMEL target, very often when we try to execute some application we can get into this kind of errors (for example):
sem_post: Function not implemented
This happens because not all the functions have been implemented in the emulated environment.[ Lauro VenĂ¢ncio]{style="font-weight: bold;"} has created a patched version of qemu-arm called [qemu-arm-eabi].
Thanks to Marcelo Lira, we have a simple howto to install the patch into the Scratchbox environment.
Note: you have to execute these commands from outside the Scratchbox environment and you should not be logged into the environment at the same time.
You need gcc 3.4, SDL dev library andZlib dev:
sudo apt-get install gcc-3.4 libsdl1.2-dev zlib1g-dev
Get the patched qemu-arm. Notice that the patches are already applied, everything is here, and you don't need to get the qemu sources.
svn co https://qemu-arm-eabi.svn.sourceforge.net/svnroot/qemu-arm-eabi qemu-arm-eabi
cd qemu-arm-eabi
./configure --target-list=arm-linux-user --static make
Copy qemu to the cputransp dir on scratchbox:
sudo cp arm-linux-user/qemu-arm /scratchbox/devkits/cputransp/bin/qemu-arm-eabi-sb2
Add it to the list of cputransp methods. Open the file:
sudo vim /scratchbox/devkits/cputransp/etc/cputransp-methods
and add this line:
qemu-arm-eabi-sb2
Configure the target to use the patched qemu as transparency method. Edit the file:
vim /scratchbox/users/USERNAME/targets/CHINOOK_ARMEL.config
and change this line:
SBOX_CPUTRANSPARENCY_METHOD=/scratchbox/devkits/cputransp/bin/qemu-arm-eabi-sb2
That's all! You're now ready to log again into your Scratchbox environment.