echo "$as_me: failed program was:" >&5

sed 's/^/| /' conftest.$ac_ext >&5

CFLAGS="$pgac_save_CFLAGS"

echo "$as_me:$LINENO: result: no" >&5

echo "${ECHO_T}no" >&6

fi

rm -f conftest.err conftest.$ac_objext conftest.$ac_ext

# Disable FP optimizations that cause various errors on gcc 4.5+ or maybe 4.6+

echo "$as_me:$LINENO: checking if $CC supports -fexcess-precision=standard" >&5

echo $ECHO_N "checking if $CC supports -fexcess-precision=standard... $ECHO_C" >&6

pgac_save_CFLAGS=$CFLAGS

CFLAGS="$pgac_save_CFLAGS -fexcess-precision=standard"

cat >conftest.$ac_ext <<_ACEOF

/* confdefs.h. */

_ACEOF

cat confdefs.h >>conftest.$ac_ext

cat >>conftest.$ac_ext <<_ACEOF

/* end confdefs.h. */

int

main ()

{

;

return 0;

}

_ACEOF

rm -f conftest.$ac_objext

if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5

(eval $ac_compile) 2>conftest.er1

ac_status=$?

grep -v '^ *+' conftest.er1 >conftest.err

rm -f conftest.er1

cat conftest.err >&5

echo "$as_me:$LINENO: \$? = $ac_status" >&5

(exit $ac_status); } &&

{ ac_try='test -z "$ac_c_werror_flag"

|| test ! -s conftest.err'

{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5

(eval $ac_try) 2>&5

ac_status=$?

echo "$as_me:$LINENO: \$? = $ac_status" >&5

(exit $ac_status); }; } &&

{ ac_try='test -s conftest.$ac_objext'

{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5

(eval $ac_try) 2>&5

ac_status=$?

echo "$as_me:$LINENO: \$? = $ac_status" >&5

(exit $ac_status); }; }; then

echo "$as_me:$LINENO: result: yes" >&5

echo "${ECHO_T}yes" >&6

else

echo "$as_me: failed program was:" >&5

sed 's/^/| /' conftest.$ac_ext >&5

CFLAGS="$pgac_save_CFLAGS"

echo "$as_me:$LINENO: result: no" >&5

echo "${ECHO_T}no" >&6

PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])

# Disable optimizations that assume no overflow; needed for gcc 4.3+

PGAC_PROG_CC_CFLAGS_OPT([-fwrapv])

# Disable FP optimizations that cause various errors on gcc 4.5+ or maybe 4.6+

PGAC_PROG_CC_CFLAGS_OPT([-fexcess-precision=standard])

elif test x"${CC}" = x"xlc"; then

# AIX xlc has to have strict aliasing turned off too

PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias])