Which Libraries do I need?

Sometimes when porting programs it is not clear which libraries you still need. The program build nicely, but does not run on the emulator or DR itself. The trick is to use the readelf-command.

arm-poky-linux-gnueabi-readelf -d your-app

shows a list of required libraries (among others).

Porting Libraries

When porting exsisting programs to the DR1000, the program itself is mostly not the problem, but the libraries it needs are. From the MobileRead forum I gathered the following receipt:
I assume you will be working in an environment in which you succeeded to build hello-world.
1) Configure

./configure --host=arm-poky-linux-gnueabi --prefix=/usr

With this line you indicate that you are going to build for arm and that the root of the resulting files should go in the /usr folder.
2) Building

make

Duh!...
3) Creating the installables

make install DESTDIR=/home/user/mylib
cd /home/user/mylib
tar -czf mylib.tar.gz usr

This creates the stuff that is normally needed to install a library (.so .a) and to use it during building (.h).
4) installing in build environment

sudo tar -xzvf mylib.tar.gz -C /usr/local/poky/eabi-glibc/arm/arm-poky-linux-gnueabi/

This copies the libraries and header files into the correct place of the development environment.

You should now be able to use the library for porting other apps.

This ofcourse only works for libabries that come with a configure script.