- Add -fno-strict-aliasing to CFLAGS if possible

git-svn-id: svn://svn.ircd-hybrid.org/svnroot/ircd-hybrid/branches/8.1.x@2593 82007160-df01-0410-b94d-b575c5fd34c7

1 files changed, 122 insertions, 58 deletions

diff --git a/configure b/configure
index 107ba42..0193a76 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Id: configure.ac 2488 2013-10-23 18:33:26Z michael .
+# From configure.ac Id: configure.ac 2531 2013-11-08 17:56:07Z michael .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69 for ircd-hybrid 8.1.9.
 #
@@ -13217,6 +13217,127 @@ $as_echo "#define ENABLE_SSP_CC 1" >>confdefs.h
   fi
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts " >&5
+$as_echo_n "checking whether C compiler accepts ... " >&6; }
+if ${ax_cv_check_cflags__+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  "
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__=yes
+else
+  ax_cv_check_cflags__=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__" >&5
+$as_echo "$ax_cv_check_cflags__" >&6; }
+if test x"$ax_cv_check_cflags__" = xyes; then :
+  :
+else
+  :
+fi
+
+if ${CFLAGS+:} false; then :
+  case " $CFLAGS " in
+    *"  "*)
+      { { $as_echo "$as_me:${as_lineno-$LINENO}: : CFLAGS already contains "; } >&5
+  (: CFLAGS already contains ) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+      ;;
+    *)
+      { { $as_echo "$as_me:${as_lineno-$LINENO}: : CFLAGS=\"\$CFLAGS \""; } >&5
+  (: CFLAGS="$CFLAGS ") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+      CFLAGS="$CFLAGS "
+      ;;
+   esac
+else
+  CFLAGS=""
+fi
+
+
+
+for flag in -fno-strict-aliasing; do
+  as_CACHEVAR=`$as_echo "ax_cv_check_cflags__$flag" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts $flag" >&5
+$as_echo_n "checking whether C compiler accepts $flag... " >&6; }
+if eval \${$as_CACHEVAR+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  $flag"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$as_CACHEVAR=yes"
+else
+  eval "$as_CACHEVAR=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+eval ac_res=\$$as_CACHEVAR
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if test x"`eval 'as_val=${'$as_CACHEVAR'};$as_echo "$as_val"'`" = xyes; then :
+  if ${CFLAGS+:} false; then :
+  case " $CFLAGS " in
+    *" $flag "*)
+      { { $as_echo "$as_me:${as_lineno-$LINENO}: : CFLAGS already contains \$flag"; } >&5
+  (: CFLAGS already contains $flag) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+      ;;
+    *)
+      { { $as_echo "$as_me:${as_lineno-$LINENO}: : CFLAGS=\"\$CFLAGS \$flag\""; } >&5
+  (: CFLAGS="$CFLAGS $flag") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+      CFLAGS="$CFLAGS $flag"
+      ;;
+   esac
+else
+  CFLAGS="$flag"
+fi
+
+else
+  :
+fi
+
+done
+
+
 
   ac_fn_c_check_func "$LINENO" "getaddrinfo" "ac_cv_func_getaddrinfo"
 if test "x$ac_cv_func_getaddrinfo" = xyes; then :
@@ -14504,63 +14625,6 @@ fi
     CFLAGS="-Wall -g -O0"
   fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts " >&5
-$as_echo_n "checking whether C compiler accepts ... " >&6; }
-if ${ax_cv_check_cflags__+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-  ax_check_save_flags=$CFLAGS
-  CFLAGS="$CFLAGS  "
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ax_cv_check_cflags__=yes
-else
-  ax_cv_check_cflags__=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-  CFLAGS=$ax_check_save_flags
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__" >&5
-$as_echo "$ax_cv_check_cflags__" >&6; }
-if test x"$ax_cv_check_cflags__" = xyes; then :
-  :
-else
-  :
-fi
-
-if ${CFLAGS+:} false; then :
-  case " $CFLAGS " in
-    *"  "*)
-      { { $as_echo "$as_me:${as_lineno-$LINENO}: : CFLAGS already contains "; } >&5
-  (: CFLAGS already contains ) 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }
-      ;;
-    *)
-      { { $as_echo "$as_me:${as_lineno-$LINENO}: : CFLAGS=\"\$CFLAGS \""; } >&5
-  (: CFLAGS="$CFLAGS ") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }
-      CFLAGS="$CFLAGS "
-      ;;
-   esac
-else
-  CFLAGS=""
-fi
-
 
   # Check whether --enable-warnings was given.
 if test "${enable_warnings+set}" = set; then :