HelloWorld Examples

The OpenEmbedded (OE) manual introduces Bitbake recipes using a single 'helloworld' tutorial. While this is a useful introduction, there are many other common use cases.

Hello World

The tar file attached [file://user.collection.tar.gz here] contains a user.collections directory complete with a number of sample helloworld recipes elucidating different use cases. An explanation for each is given below:

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Usage

1. [file://file.tar.gz Download] and untar this folder in your top-level OE direvictory. For the sake of these instructions, we assume this is '~/overo-oe'.

   $ tar xzf file.tar.gx -C ~/overo-oe/ 

2. Bitbake the desired recipe based on its recipe name e.g. bitbake myhello-cpp
3. Copy the newly created package file from your build machine to your Gumstix. You might do this by transfering the files on microSD card, using a serial connection, or, most simply, copying them over an internet connection. E.g.

   $ scp ~/overo-oe/tmp/deploy/glibc/ipk/armv5te/myhelloworld_0.0.1-r0.5_armv5te.ipk root@mygumstixcom:~ 

4. Install your package and test it out:

   > opkg install myhelloworld_0.0.1-r0.5_armv5te.ipk 

   > myhelloworld 

   Hello, World! 

There are lots of use cases not covered here, feel free to add new or request new ones.

Helpful Links

• http://docs.openembedded.org/usermanual/usermanual.html#recipes_helloworld_example
• http://www.gumstix.net/User-How-To-s/view/Build-system-overview/Hello-world-tutorial/110.html

Recipe:	Description:	Command:
myhelloworld	vanilla OE helloworld tutorial	myhelloworld
myhello-cpp	a simple C++ recipe	myhello-cpp
myhello-make	a recipe that uses a Makefile	myhello-make
myhello-cmake	a recipe that uses cmake and creates a library	myhello-cmake
myhello-python	a rather trivial python recipe	myhello-python
myhello-git	shows git fetcher and patching	myhello-git