Zeugswetter Andreas DCP SD wrote: > > > > 4. Find the option for disabling strict alias and get configure to > add > > > that. > > > > You'll still lose performance, but the option is "-qalias=noansi". > > My old xlc does not show that option, it is unfortunately version > specific. > The currently compatible option to turn it off would be -qnoansialias > > So we can use: > xlc -qnoansialias > > The default cc options are: -qlanglvl=extended -qnoro -qnoroconst > So I guess we could also use (but above is imho clearer/better): > cc -qro -qroconst -qlanglvl=extc89
OK, patch attached and applied to use -qnoansialias in xlc. We can consider backpatching this to 8.1.X. -- Bruce Momjian http://candle.pha.pa.us EnterpriseDB http://www.enterprisedb.com + If your life is a hard drive, Christ can be your backup. +
Index: configure.in =================================================================== RCS file: /cvsroot/pgsql/configure.in,v retrieving revision 1.460 diff -c -c -r1.460 configure.in *** configure.in 22 Apr 2006 00:29:41 -0000 1.460 --- configure.in 27 Apr 2006 14:26:06 -0000 *************** *** 267,272 **** --- 267,275 ---- # Disable strict-aliasing rules; needed for gcc 3.3+ PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing]) + elif test ${CC} = "xlc"; then + # AIX xlc has to have strict aliasing turned off too + PGAC_PROG_CC_CFLAGS_OPT([-qnoansialias]) fi # supply -g if --enable-debug
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