path: root/mk/
diff options
authorOlivier Matz <>2017-03-24 14:21:31 +0100
committerThomas Monjalon <>2017-03-27 23:28:43 +0200
commitfeb9f680cd2c1df3d47bf4c05dc872467176e1e3 (patch)
treecaef9798533f2249ad24668b4e6d21d247c792a1 /mk/
parent5b2976c718e0717f5e1b39b50ac71fb2ce80e47c (diff)
mk: optimize directory dependencies
Before this patch, the management of dependencies between directories had several issues: - the generation of .depdirs, done at configuration is slow: it can take more than one minute on some slow targets (usually ~10s on a standard PC without -j). - for instance, it is possible to express a dependency like: - app/foo depends on lib/librte_foo - and lib/librte_foo depends on app/bar But this won't work because the directories are traversed with a depth-first algorithm, so we have to choose between doing 'app' before or after 'lib'. - the script is too complex. - we cannot use "make -d" for debug, because the output of make is used for the generation of .depdirs. This patch moves the DEPDIRS-* variables in the upper Makefile, making the dependencies much easier to calculate. A DEPDIRS variable is still used to process library dependencies in LDLIBS. After this commit, "make config" is almost immediate. Signed-off-by: Olivier Matz <> Tested-by: Robin Jarry <> Tested-by: Jerin Jacob <>
Diffstat (limited to 'mk/')
1 files changed, 0 insertions, 2 deletions
diff --git a/mk/ b/mk/
index e7ac4d5..96144fb 100644
--- a/mk/
+++ b/mk/
@@ -33,7 +33,6 @@
include $(RTE_SDK)/mk/internal/
include $(RTE_SDK)/mk/internal/
-include $(RTE_SDK)/mk/internal/
# VPATH contains at least SRCDIR
@@ -55,4 +54,3 @@ doclean:
include $(RTE_SDK)/mk/internal/
include $(RTE_SDK)/mk/internal/
-include $(RTE_SDK)/mk/internal/