Toolchain feed syntax

General

This is used by the qitoolchain create command.

The root of the feed.xml should be toolchain

The global xml file should look like this:

 <toolchain>

  <package
    name="foo"
    url="http://example.com/packages/foo-1.0.tar.gz"
    version="1.0"
  />

</toolchain>

toolchain type

The toolchain node accepts three types of children:

  • package type
  • feed type
  • select type (more on this later)

feed type

The feed type can have a url attribute, pointing to an other feed.

This lets you include feeds inside other feeds.

<!-- in feeds/full.xml  -->
<toolchain>
  <feed url = "feeds/included.xml" />
</toolchain>

<!-- feeds/included.xml -->

<toolchain>
  <!-- some other packages -->
</toolchain>

package type

The package type must have at least a name attribute.

Optionally, it can have a version and a arch attributes.

This lets you store several configuration and several versions of the same package in the same feed

<toolchain>
  <package name="world" arch="linux32" version="0.1" url="world-0.1-linux32.tar.gz" />
  <package name="world" arch="linux32" version="0.2" url="world-0.2-linux32.tar.gz" />
  <package name="world" arch="linux64" version="0.1" url="world-0.1-linux64.tar.gz" />
  <package name="world" arch="linux64" version="0.2" url="world-0.2-linux64.tar.gz" />
</toolchain>

If it does not have an url attribute, it should have a directory attribute, and then the package path will be relative to the feed path.

This lets you put several packages in a big archive (for instance my-sdk.tar.gz), and give it to other developers.

Simply create a toolchain.xml at the root of the SDK, looking like

<toolchain>
  <package name="my-sdk" directory="." />
</toolchain>

If you need a toolchain file, (for instance because your are generating a cross-toolchain), simply use the toolchain_file attribute

<toolchain>
  <package name="my-ctc" directory="." toolchain_file="my-toolchain.cmake" />
</toolchain>

The toolchain_file is relative to the path of the package.

Of course, nothing prevents you to create a feed letting developers getting your cross-toolchain remotely.

<toolchain>
  <package
  name="my-ctc"
  url="http://example.com/myctc.tar.gz"
  toolchain_file="my-toolchain.cmake"
  />
</toolchain>

select type

Right now we have no need for this, but several things might be implemented later:

<!-- Force a given arch -->
<select>
  <arch>linux32</arch>
</select>

<!-- or: -->
<select arch="linux32" />

<!-- blacklist a specific package:
  foo-1.12 will never be added
-->
<select>
  <blacklist name="foo" version="1.12" />
</select>


<!-- assert that a specific package
  is here
  If no bar-1.14 package is found, an
  error will be raised
-->
  <select>
    <force name="bar" version="1.14" />
  </select>

We do not need this because when several packages are found, we simply take the latest version.

So for instance, if you need foobar-0.1 in your maintenance branch, but foobar-2.0 in your devel branch, you can simply have two feeds, like this

<!-- in maint.xml -->
<toolchain>
  <package name="foobar" version="0.1" url="http://example.com/packages/foobar-0.1.tar.gz" />
  <package name="spam"   version="1.0" url="http://example.com/packages/spam-1.0.tar.gz" />
</toolchain>

<!-- in devel.xml -->
<toolchain>
  <feed url="http://example.com/feeds/maint.xml" />
  <package name="foobar" version="2.0" url="http://example.com/packages/foobar-2.0.tar.gz" />
</toolchain>
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