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| author |   Scott Rifenbark <srifenbark@gmail.com> | 2016-02-23 09:18:08 -0800 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2016-03-03 17:33:59 +0000 |
| commit | 4ebe55cb8c8db1c5cf5d127e213487c5a453a68a (patch) | |
| tree | 1979a37b264a1f77c8748d46affe873a3626ef9a /doc | |
| parent | 91cb52b1e77bba9d046239933b5c0513d01e6824 (diff) | |
| download | bitbake-contrib-4ebe55cb8c8db1c5cf5d127e213487c5a453a68a.tar.gz | |
bitbake-user-manual: Added note for Python variable ref expansion.
Fixes [YOCTO #9148]
Added a note about Variable expressions (e.g. ${X}) are no longer
expanded within Python functions.
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/bitbake-user-manual/bitbake-user-manual-metadata.xml | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml b/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml index cfa85b379..359df8f75 100644 --- a/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml +++ b/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml @@ -840,6 +840,18 @@ is a global variable and is always automatically available. </para> + + <note> + Variable expressions (e.g. <filename>${X}</filename>) are no + longer expanded within Python functions. + This behavior is intentional in order to allow you to freely + set variable values to expandable expressions without having + them expanded prematurely. + If you do wish to expand a variable within a Python function, + use <filename>d.getVar("X", True)</filename>. + Or, for more complicated expressions, use + <filename>d.expand()</filename>. + </note> </section> <section id='python-functions'> |