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authorVictor Stinner <victor.stinner@gmail.com>2017-04-28 13:07:10 (GMT)
committerGitHub <noreply@github.com>2017-04-28 13:07:10 (GMT)
commit826f83f1d562a7b878499bc3af2267cfdfe5f2f9 (patch)
treed35096a04bd036d1e807309764002f40d4274f9e /configure
parent5a4e3d8f9c37e700402b23fafbfc413e5ca3113d (diff)
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bpo-30104: Only use -fno-strict-aliasing on dtoa.c (#1340)
On clang, only compile dtoa.c with -fno-strict-aliasing, use strict aliasing to compile all other C files.
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure11
1 files changed, 3 insertions, 8 deletions
diff --git a/configure b/configure
index 1c90d31..3e89bfa 100755
--- a/configure
+++ b/configure
@@ -668,6 +668,7 @@ OTHER_LIBTOOL_OPT
UNIVERSAL_ARCH_FLAGS
CFLAGS_NODIST
BASECFLAGS
+CFLAGS_ALIASING
OPT
LLVM_PROF_FOUND
target_os
@@ -6829,13 +6830,7 @@ then
then
# Clang also needs -fwrapv
WRAP="-fwrapv"
-
- # bpo-30104: Python/dtoa.c requires to be build with
- # -fno-strict-aliasing to fix compiler issue on the
- # double/ULong[2] union using clang 4.0 and optimization level
- # -O2 or higher
- # https://bugs.llvm.org//show_bug.cgi?id=31928
- ALIASING="-fno-strict-aliasing"
+ CFLAGS_ALIASING="-fno-strict-aliasing"
fi
case $ac_cv_prog_cc_g in
@@ -6857,7 +6852,7 @@ then
;;
esac
- OPT="$OPT $STRICT_PROTO $ALIASING"
+ OPT="$OPT $STRICT_PROTO"
case $ac_sys_system in
SCO_SV*) OPT="$OPT -m486 -DSCO5"