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author | Sam Thursfield <sam@afuera.me.uk> | 2017-04-01 20:04:53 +0100 |
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committer | Sam Thursfield <sam@afuera.me.uk> | 2017-04-03 17:02:41 +0100 |
commit | f5b7cfdbf0888fb99956cf2dc661c519aa08a9a4 (patch) | |
tree | 4f8f1e7c8d0a2798dd3c8c6e1360e2fb25d73328 /mesonbuild/backend/backends.py | |
parent | c7f66c3a9e4f69e0bcde8819f15c9d8b972a2f75 (diff) | |
download | meson-f5b7cfdbf0888fb99956cf2dc661c519aa08a9a4.zip meson-f5b7cfdbf0888fb99956cf2dc661c519aa08a9a4.tar.gz meson-f5b7cfdbf0888fb99956cf2dc661c519aa08a9a4.tar.bz2 |
Ensure rules in the generated build.ninja file are in a stable order
Previously, two functionally identical builds could produce different
build.ninja files. The ordering of the rules themselves doesn't affect
behaviour, but unnecessary changes in commandline arguments can cause
spurious rebuilds and if the ordering of the overall file is stable
than it's easy to use `diff` to compare different build.ninja files
and spot the differences in ordering that are triggering the unnecessary
rebuilds.
Diffstat (limited to 'mesonbuild/backend/backends.py')
-rw-r--r-- | mesonbuild/backend/backends.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mesonbuild/backend/backends.py b/mesonbuild/backend/backends.py index 99be172..e37b0df 100644 --- a/mesonbuild/backend/backends.py +++ b/mesonbuild/backend/backends.py @@ -22,6 +22,7 @@ import json import subprocess from ..mesonlib import MesonException, get_compiler_for_source, classify_unity_sources from ..compilers import CompilerArgs +from collections import OrderedDict class CleanTrees: ''' @@ -542,7 +543,7 @@ class Backend: return newargs def get_build_by_default_targets(self): - result = {} + result = OrderedDict() # Get all build and custom targets that must be built by default for name, t in self.build.get_targets().items(): if t.build_by_default or t.install or t.build_always: |