"Sergey E. Koposov" <[EMAIL PROTECTED]> writes: >> BTW, does ICC have any switch corresponding to gcc's -fno-strict-aliasing? >> I see that configure tries to feed that switch to it, but it might >> want some other spelling.
> Apparently in none of the ICC manuals -fno-strict-aliasing is described, > but ICC accepts such flag, and produce the same code as with > '-fno-alias' flag (described in ICC manuals). Well, since configure.in has a separate code path for ICC anyway, it seems like we might as well provide it the official spelling. Any objections to a patch like this? if test "$GCC" = yes -a "$ICC" = no; then CFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wpointer-arith -Winline" # These work in some but not all gcc versions PGAC_PROG_CC_CFLAGS_OPT([-Wdeclaration-after-statement]) PGAC_PROG_CC_CFLAGS_OPT([-Wendif-labels]) # Disable strict-aliasing rules; needed for gcc 3.3+ PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing]) elif test "$ICC" = yes; then # 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]) - # Not clear if this is needed, but seems like a good idea - PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing]) + # ICC prefers to spell the no-strict-aliasing switch like this + PGAC_PROG_CC_CFLAGS_OPT([-fno-alias]) elif test x"${CC}" = x"xlc"; then # AIX xlc has to have strict aliasing turned off too PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias]) fi regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org