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authorVictor Stinner <vstinner@redhat.com>2019-04-12 22:51:07 (GMT)
committerGitHub <noreply@github.com>2019-04-12 22:51:07 (GMT)
commita304b136adda3575898d8b5debedcd48d5072272 (patch)
treefb17a42257bf48130afc2388685396f4952c2aec /configure
parent1e8295402bf5e81d327ed2b5eb88a6b6de449d63 (diff)
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bpo-36618: Don't add -fmax-type-align flag to old clang (GH-12811)
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure9
1 files changed, 7 insertions, 2 deletions
diff --git a/configure b/configure
index ac1e66a..9c7eded 100755
--- a/configure
+++ b/configure
@@ -6889,9 +6889,14 @@ then
# instead: slower but don't trigger a SIGSEGV if the memory is not aligned
# on 16 bytes.
#
- # Sadly, the flag must be expected to CFLAGS and not just CFLAGS_NODIST,
+ # Sadly, the flag must be added to CFLAGS and not just CFLAGS_NODIST,
# since third party C extensions can have the same issue.
- CFLAGS="$CFLAGS -fmax-type-align=8"
+ #
+ # Check if -fmax-type-align flag is supported (it's not supported by old
+ # clang versions):
+ if "$CC" -v --help 2>/dev/null |grep -- -fmax-type-align > /dev/null; then
+ CFLAGS="$CFLAGS -fmax-type-align=8"
+ fi
fi