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enable -fstrict-aliasing by default for gcc 3

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This commit is contained in:
Bill Currie 2002-01-23 03:13:31 +00:00
parent 4416121007
commit f882e8400e
1 changed files with 13 additions and 2 deletions
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15
configure.ac
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@ -1140,9 +1140,20 @@ if test "x$optimize" = xyes; then
if test "x$GCC" = xyes; then
CFLAGS="$CFLAGS -O3 -ffast-math -funroll-loops -fomit-frame-pointer -fexpensive-optimizations"
AC_ARG_ENABLE(strict-aliasing,
[ --enable-strict-aliasing enable the -fstrict-aliasing ooption of gcc],
[ --enable-strict-aliasing enable the -fstrict-aliasing ooption of gcc])
if test "x$enable_strict_aliasing" = "xyes"; then
CFLAGS="$CFLAGS -fstrict-aliasing"
)
else
if test "x$enable_strict_aliasing" != "xno"; then
set $CCVER
IFS="."
set $2
if test $1 -ge 3; then
CFLAGS="$CFLAGS -fstrict-aliasing"
fi
IFS=" "
fi
fi
AC_MSG_CHECKING(for special compiler settings)
case "${host_cpu}" in
i?86)