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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> | 2016-08-18 10:06:26 +0100 |
| commit | 0eb6d709b6c38aa27f33d8b0ef977a33350f0d75 (patch) | |
| tree | f4b503fb079669fdc021f9b7a78f6d814862d7f4 /bitbake/doc | |
| parent | b50b14e37249fb23b8e4f3a86f9b245cba85ca86 (diff) | |
| download | openembedded-core-contrib-0eb6d709b6c38aa27f33d8b0ef977a33350f0d75.tar.gz | |
bitbake: ast/ConfHandler: Add a syntax to clear variable
unset VAR
will clear variable VAR
unset VAR[flag]
will clear flag "flag" from var VAR
(Bitbake rev: bedbd46ece8d1285b5cd2ea07dc64b4875b479aa)
Signed-off-by: Jérémy Rosen <jeremy.rosen@openwide.fr>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'bitbake/doc')
| -rw-r--r-- | bitbake/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/bitbake/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml b/bitbake/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml index 5df00050ce..64f08157f6 100644 --- a/bitbake/doc/bitbake-user-manual/bitbake-user-manual-metadata.xml +++ b/bitbake/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> |