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dev-manual: Added reasoning blurb to "Viewing Variables" section.

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I put a new introductory paragraph in the "Viewing Variables"
section that alludes to why you might want to see variables.
Also, I linked to the section "Modifying Variable Values" in
the BB manual.

(From yocto-docs rev: 6e18524ba62d2ff1231184467b0dd24dab33cfe6)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark
2019-04-19 09:51:59 -07:00
committed by Richard Purdie
parent 237b225552
commit f60698d54b
1 changed files with 10 additions and 0 deletions
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documentation/dev-manual/dev-manual-common-tasks.xml
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@@ -12525,6 +12525,16 @@
<section id='dev-debugging-viewing-variable-values'> <section id='dev-debugging-viewing-variable-values'>
<title>Viewing Variable Values</title> <title>Viewing Variable Values</title>
<para>
Sometimes you need to know the value of a variable as a
result of BitBake's parsing step.
This could be because some unexpected behavior occurred
in your project.
Perhaps an attempt to
<ulink url='&YOCTO_DOCS_BB_URL;#modifying-existing-variables'>modify a variable</ulink>
did not work out as expected.
</para>
<para> <para>
BitBake's <filename>-e</filename> option is used to display BitBake's <filename>-e</filename> option is used to display
variable values after parsing. variable values after parsing.