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author | Bruce Richardson <bruce.richardson@intel.com> | 2018-04-12 21:20:20 +0100 |
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committer | Nirbheek Chauhan <nirbheek.chauhan@gmail.com> | 2018-04-13 01:03:59 +0000 |
commit | c213d715ebb594c52425d361409aa28d13b77d9a (patch) | |
tree | d29857cf213cbc1d8bf1a63568662019bb20f173 /mesonbuild | |
parent | c04862e24c94000a4e8a7b9c1012178b3b6195d8 (diff) | |
download | meson-c213d715ebb594c52425d361409aa28d13b77d9a.zip meson-c213d715ebb594c52425d361409aa28d13b77d9a.tar.gz meson-c213d715ebb594c52425d361409aa28d13b77d9a.tar.bz2 |
Prune unneeded transitive dependencies
When getting dependencies, we don't need to get the same dependencies and
dependency chains multiple times. If library a depends on x, y and z, and
library b depends on a, then we should not have to iterate through x, y and
z multiple times. Pruning at the stage of scanning the dependencies leads
to significant time savings when running meson
Diffstat (limited to 'mesonbuild')
-rw-r--r-- | mesonbuild/build.py | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/mesonbuild/build.py b/mesonbuild/build.py index 08e0c9d..87ce8a5 100644 --- a/mesonbuild/build.py +++ b/mesonbuild/build.py @@ -803,12 +803,16 @@ This will become a hard error in a future Meson release.''') def get_extra_args(self, language): return self.extra_args.get(language, []) - def get_dependencies(self): + def get_dependencies(self, exclude=None): transitive_deps = [] + if exclude is None: + exclude = [] for t in itertools.chain(self.link_targets, self.link_whole_targets): + if t in transitive_deps or t in exclude: + continue transitive_deps.append(t) if isinstance(t, StaticLibrary): - transitive_deps += t.get_dependencies() + transitive_deps += t.get_dependencies(transitive_deps + exclude) return transitive_deps def get_source_subdir(self): |