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docs/manual: document new behaviour of 'make printvars'

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Add a 'VARS=...' setting to the example. To make it clear that several
variables can be specified, use two variables in the first example.
Only 2 variables are printed, so the ... is removed.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Arnout Vandecappelle (Essensium/Mind) 2019-03-12 18:55:35 +01:00 committed by Thomas Petazzoni
parent fd5bd12379
commit 71d0cddeac
1 changed files with 5 additions and 5 deletions
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10
docs/manual/make-tips.txt
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@ -80,18 +80,18 @@ to xref:ccache[].
.Dumping the internal make variables:
One can dump all the variables known to make, along with their values:
One can dump the variables known to make, along with their values:
----
$ make -s printvars
VARIABLE=value_of_variable
...
$ make -s printvars VARS='VARIABLE1 VARIABLE2'
VARIABLE1=value_of_variable
VARIABLE2=value_of_variable
----
It is possible to tweak the output using some variables:
- +VARS+ will limit the listing to variables which names match the
specified make-pattern
specified make-patterns - this must be set else nothing is printed
- +QUOTED_VARS+, if set to +YES+, will single-quote the value
- +RAW_VARS+, if set to +YES+, will print the unexpanded value