17 lines
561 B
Diff
17 lines
561 B
Diff
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diff --git a/config/makefiles/rust.mk b/config/makefiles/rust.mk
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--- a/config/makefiles/rust.mk
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+++ b/config/makefiles/rust.mk
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@@ -61,7 +61,11 @@
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# Enable link-time optimization for release builds, but not when linking
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# gkrust_gtest.
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ifeq (,$(findstring gkrust_gtest,$(RUST_LIBRARY_FILE)))
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+# Pass -Clto for older versions of rust, and CARGO_PROFILE_RELEASE_LTO=true
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+# for newer ones that support it. Combining the latter with -Clto works, so
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+# set both everywhere.
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cargo_rustc_flags += -Clto
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+export CARGO_PROFILE_RELEASE_LTO=true
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endif
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endif
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endif
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