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configure: Increase x86 stack alignment on clang

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This commit is contained in:
Henrik Gramner
2017-08-04 23:09:00 +02:00
committed by Anton Mitrofanov
parent e9a5903edf
commit 1e27313c12
1 changed files with 11 additions and 6 deletions
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configure
Vendored
+11 -6
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@@ -866,12 +866,17 @@ if [ $compiler = GNU -a \( $ARCH = X86 -o $ARCH = X86_64 \) ] ; then
if cc_check '' -mpreferred-stack-boundary=6 ; then
CFLAGS="$CFLAGS -mpreferred-stack-boundary=6"
stack_alignment=64
elif cc_check '' -mpreferred-stack-boundary=5 ; then
CFLAGS="$CFLAGS -mpreferred-stack-boundary=5"
stack_alignment=32
elif [ $stack_alignment -lt 16 ] && cc_check '' -mpreferred-stack-boundary=4 ; then
CFLAGS="$CFLAGS -mpreferred-stack-boundary=4"
stack_alignment=16
elif cc_check '' -mstack-alignment=64 ; then
CFLAGS="$CFLAGS -mstack-alignment=64"
stack_alignment=64
elif [ $stack_alignment -lt 16 ] ; then
if cc_check '' -mpreferred-stack-boundary=4 ; then
CFLAGS="$CFLAGS -mpreferred-stack-boundary=4"
stack_alignment=16
elif cc_check '' -mstack-alignment=16 ; then
CFLAGS="$CFLAGS -mstack-alignment=16"
stack_alignment=16
fi
fi
elif [ $compiler = ICC -a $ARCH = X86 ]; then
# icc on linux has various degrees of mod16 stack support