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cpython: disable no-semantic-interposition with older clang versions

> clang-7: error: unknown argument: '-fno-semantic-interposition'

This primarily affects current darwin builds, but as soon as they
migrate to a newer clang version they will immediately start benefitting
from this change.
This commit is contained in:
Martin Weinelt 2021-07-08 18:33:05 +02:00
parent c786eaf612
commit fac5757eec
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@ -40,7 +40,8 @@
, static ? stdenv.hostPlatform.isStatic
, enableOptimizations ? false
# enableNoSemanticInterposition is a subset of the enableOptimizations flag that doesn't harm reproducibility.
, enableNoSemanticInterposition ? true
# clang starts supporting `-fno-sematic-interposition` with version 10
, enableNoSemanticInterposition ? (!stdenv.cc.isClang || (stdenv.cc.isClang && lib.versionAtLeast stdenv.cc.version "10"))
# enableLTO is a subset of the enableOptimizations flag that doesn't harm reproducibility.
# enabling LTO on 32bit arch causes downstream packages to fail when linking
, enableLTO ? stdenv.is64bit