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packages infra: add function to get a Kconfig option

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We so far have no mean to get the value from a Kconfig option from the
.config file of a package (eg. linux, busybox...).

Add a new function that returns the unmangled value of an option.
It expect two arguments:
  - the Kconfig option name (complete, with leading CONFIG if necessary)
  - the .config file to get it from

Note that, if the Kconfig option is a string, the returned value will
contain the leading and trailing double-quotes.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Peter Korsgaard <jacmet@uclibc.org>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN 2014-02-08 17:26:04 +01:00 committed by Thomas Petazzoni
parent ff673f9a22
commit c28a28eed1
1 changed files with 2 additions and 0 deletions
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2
package/pkg-utils.mk
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@ -52,6 +52,8 @@ define KCONFIG_DISABLE_OPT
echo "# $(1) is not set" >> $(2)
endef
KCONFIG_GET_OPT = $(shell sed -e 's/^$(1)=//p' $(2))
# Helper functions to determine the name of a package and its
# directory from its makefile directory, using the $(MAKEFILE_LIST)
# variable provided by make. This is used by the *TARGETS macros to