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* dependencies: add function suitable-host-packageThomas De Schampheleire2012-02-091-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometimes, buildroot needs a certain host tool to do its job, e.g. tar. In many cases, we expect this tool to be present on the host system, but this is not always the case. Or maybe, the version on the host system is not suitable, and we need a more recent one. In some of these cases, instead of bailing out, buildroot could build the package first (but only if the existing system package is not suitable). To aid in detecting if a host package is suitable or not, this patch adds a function suitable-host-package. When called with parameter foo, it will execute check-host-foo.sh. This script should return either the path to the suitable host package, or the empty string if no suitable package can be found. The rules to determine whether something is suitable or not is left to check-host-foo.sh and depends on foo. An example usage of suitable-host-package is: DEPENDENCIES_HOST_PREREQ += $(if $(call suitable-host-package,foo),,host-foo) To avoid cluttering the existing dependencies.mk file, it includes any check-host-foo.mk file. These files can be used to hold appropriate dependency-related actions for foo. Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> v1 Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
* dependencies: move from toolchain/ to support/Thomas De Schampheleire2012-02-091-0/+35
As suggested by Arnout Vandecappelle, move toolchain/dependencies to support/dependencies, as it really is not toolchain-specific anymore. Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>