Cross Building Linux

Just a quick note since even if is quite easy to read the Makefile sometimes you’d rather have the solution now. This is what I use for the efika images. The layout is the following: /dev/sdc1 on /mnt/efika/boot type vfat (rw) /dev/sdc2 on /mnt/efika/ type ext4 (rw) CROSS_COMPILE and INSTALL_MOD_PATH are described quite well in the linux Makefile. The former tell the configure which toolchain should be used, the latter where to install the modules, pretty easy, isn’t it? You must be careful to not forget the trailing “-” from the CROSS_COMPILE and you can avoid the trailing “/” in the INSTALL_MOD_PATH make CROSS_COMPILE=armv7a-unknown-linux-gnueabi- ARCH=arm menuconfig make CROSS_COMPILE=armv7a-unknown-linux-gnueabi- ARCH=arm make CROSS_COMPILE=armv7a-unknown-linux-gnueabi- ARCH=arm uImage make CROSS_COMPILE=armv7a-unknown-linux-gnueabi- ARCH=arm INSTALL_MOD_PATH=/mnt/efika modules_install In this […]

Remote desktop, meet multimedia; school, meet remote desktop

Recently we got contacted about crafting some kind of solution for remote participation to school lesson. Hospitalized students may have hard time catching up and the current technologies, even the overpriced and underused “interactive blackboards” may help a bit in the picture. What’s an “interactive blackboard” ? It is more or less a projector and any kind of tracking pointer, usually the IR flavour you can see in wide use through the Nintendo Wii. Not exactly a breakthrough it’s something you could craft with about 50e of components and any price for a projector (like the relatively inexpensive and highly portable ones from 3m). You might have some “value added software” that give you an UI that is more “blackboardish” […]