fi

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

#ICC prefers to spell the no-strict-aliasingswitch likethis

echo "$as_me:$LINENO: checking if $CC supports -fno-alias" >&5

echo $ECHO_N "checking if $CC supports -fno-alias... $ECHO_C" >&6

#Make surestrictaliasingis off (thoughthis is said to be the default)

echo "$as_me:$LINENO: checking if $CC supports -fno-strict-aliasing" >&5

echo $ECHO_N "checking if $CC supports -fno-strict-aliasing... $ECHO_C" >&6

pgac_save_CFLAGS=$CFLAGS

CFLAGS="$pgac_save_CFLAGS -fno-alias"

CFLAGS="$pgac_save_CFLAGS -fno-strict-aliasing"

cat >conftest.$ac_ext <<_ACEOF

/* confdefs.h. */

_ACEOF

dnl Process this file with autoconf to produce a configure script.

dnl $PostgreSQL: pgsql/configure.in,v 1.525 2007/09/11 19:50:25 tgl Exp $

dnl $PostgreSQL: pgsql/configure.in,v 1.526 2007/09/12 14:28:55 tgl Exp $

dnl

dnl Developers, please strive to achieve this order:

dnl

# Intel's compiler has a bug/misoptimization in checking for

# division by NAN (NaN == 0), -mp1 fixes it, so add it to the CFLAGS.

PGAC_PROG_CC_CFLAGS_OPT([-mp1])

#ICC prefers to spell the no-strict-aliasingswitch likethis

PGAC_PROG_CC_CFLAGS_OPT([-fno-alias])

#Make surestrictaliasingis off (thoughthis is said to be the default)

PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])

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

# AIX xlc has to have strict aliasing turned off too

PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias])