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package/pkg-utils.mk: add extractor-pkg-dependency macro

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To extract some archive types, if the extracting tool is not available
on the system where Buildroot runs on, we build it using a Buildroot
host package.

Such dependencies are currently explicitly handled by the
inner-generic-package macro, but in fact we also need to handle them
in all places where the "suitable-extractor" macro is invoked, and
some packages invoke it directly. Otherwise, such packages may be
missing a dependency to the appropriate host Buildroot package
building the extracting tool they need. An example is gettext-tiny,
whose source code is a gzip-compressed tarball, but in addition
manually extracts a xz-compressed tarball.

This extractor-pkg-dependency macro will be used in follow-up commits
to ensure all the packages that use suitable-extractor properly add
the correct dependencies.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
Thomas Petazzoni 2019-12-16 16:31:14 +01:00 committed by Yann E. MORIN
parent 5ef1679635
commit 6d162dd44e
1 changed files with 8 additions and 0 deletions
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8
package/pkg-utils.mk
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@ -46,6 +46,14 @@ INFLATE.tar = cat
# suitable-extractor(filename): returns extractor based on suffix
suitable-extractor = $(INFLATE$(suffix $(1)))
EXTRACTOR_PKG_DEPENDENCY.lzma = $(BR2_XZCAT_HOST_DEPENDENCY)
EXTRACTOR_PKG_DEPENDENCY.xz = $(BR2_XZCAT_HOST_DEPENDENCY)
EXTRACTOR_PKG_DEPENDENCY.lz = $(BR2_LZIP_HOST_DEPENDENCY)
# extractor-pkg-dependency(filename): returns a Buildroot package
# dependency needed to extract file based on suffix
extractor-pkg-dependency = $(EXTRACTOR_PKG_DEPENDENCY$(suffix $(1)))
# extractor-system-dependency(filename): returns the name of the tool
# needed to extract 'filename', and is meant to be used with
# DL_TOOLS_DEPENDENCIES, in order to check that the necesary tool is