pkg-infra: allow dumping reverse dependencies of a package
Finding the packages that select another one in a specific configuration
is not very trivial:
- when optional, the dependency is not expressed in Kconfig
- looking at the .mk files is not very nice.
Introduce a way to dump reverse dependencies of packages, i.e. the list
of packages that directly depend on that package. Like for direct
dependencies, we limit the list to the first-order reverse dependencies.
Document it in the main help; use the opportunity to also document
foo-show-depends.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/Makefile b/Makefile
index 3ba1490..5c65f90 100644
--- a/Makefile
+++ b/Makefile
@@ -974,6 +974,8 @@
@echo ' <pkg>-depends - Build <pkg>'\''s dependencies'
@echo ' <pkg>-configure - Build <pkg> up to the configure step'
@echo ' <pkg>-build - Build <pkg> up to the build step'
+ @echo ' <pkg>-show-depends - List packages on which <pkg> depends'
+ @echo ' <pkg>-show-rdepends - List packages which have <pkg> as a dependency'
@echo ' <pkg>-graph-depends - Generate a graph of <pkg>'\''s dependencies'
@echo ' <pkg>-dirclean - Remove <pkg> build directory'
@echo ' <pkg>-reconfigure - Restart the build from the configure step'
