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| author |   Jérémy Rosen <jeremy.rosen@smile.fr> | 2016-08-16 14:04:47 +0200 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2016-08-17 10:23:01 +0100 |
| commit | bedbd46ece8d1285b5cd2ea07dc64b4875b479aa (patch) | |
| tree | ec8dbaf16a07d932f1dcd484e889823af62a6cee /doc | |
| parent | fef18b445c0cb6b266cd939b9c78d7cbce38663f (diff) | |
| download | bitbake-contrib-bedbd46ece8d1285b5cd2ea07dc64b4875b479aa.tar.gz | |
ast/ConfHandler: Add a syntax to clear variable
unset VAR
will clear variable VAR
unset VAR[flag]
will clear flag "flag" from var VAR
Signed-off-by: Jérémy Rosen <jeremy.rosen@openwide.fr>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/bitbake-user-manual/bitbake-user-manual-metadata.xml | 17 |
1 files changed, 17 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 5df00050c..64f08157f 100644 --- a/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml +++ b/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml @@ -435,6 +435,23 @@ </para> </section> + <section id='unsetting-variables'> + <title>Unseting variables</title> + + <para> + It is possible to completely remove a variable or a variable flag + from BitBake's internal data dictionary by using the "unset" keyword. + Here is an example: + <literallayout class='monospaced'> + unset DATE + unset do_fetch[noexec] + </literallayout> + These two statements remove the <filename>DATE</filename> and the + <filename>do_fetch[noexec]</filename> flag. + </para> + + </section> + <section id='providing-pathnames'> <title>Providing Pathnames</title> |