* Added -fno-strict-aliasing detection to configure.in (-fstrict-aliasing is added through -O2), since the code is not aliasing safe and causes warnings with gcc.

- This also fixes a missing line in the pre-built configure script (since r14870).

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@14935 54d463be-8e91-2dee-dedb-b68131a5f0ec

3 files changed, 68 insertions, 0 deletions

diff --git a/Changelog-Trunk.txt b/Changelog-Trunk.txt
index a8960b164..193e28b0c 100644
--- a/Changelog-Trunk.txt
+++ b/Changelog-Trunk.txt
@@ -1,5 +1,8 @@
 Date	Added
 
+2011/08/16
+	* Added -fno-strict-aliasing detection to configure.in (-fstrict-aliasing is added through -O2), since the code is not aliasing safe and causes warnings with gcc. [Ai4rei]
+	- This also fixes a missing line in the pre-built configure script (since r14870).
 2011/08/11
 	* Fixed bonuses bAddMonsterDropItem and bAddMonsterDropItemGroup (which broke after bAddClassDropItem	was added). [Skotlex]
 2011/08/10
diff --git a/configure b/configure
index fbc5e3a11..e26d187e8 100755
--- a/configure
+++ b/configure
@@ -3476,6 +3476,54 @@ rm -f conftest.err conftest.$ac_objext \
 
 
 #
+# -O2 implies -fstrict-aliasing, but the code is not safe for that
+#
+echo "$as_me:$LINENO: checking whether $CC supports -fno-strict-aliasing" >&5
+echo $ECHO_N "checking whether $CC supports -fno-strict-aliasing... $ECHO_C" >&6
+OLD_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -fno-strict-aliasing"
+cat >conftest.$ac_ext <<_ACEOF
+int foo;
+_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
+
+
+		echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+		CFLAGS="$OLD_CFLAGS"
+
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+#
 # DB_MANUAL_CAST_TO_UNION
 #
 echo "$as_me:$LINENO: checking whether $CC is able to typecast to union" >&5
@@ -6178,6 +6226,7 @@ do
   # Handling of arguments.
   "Makefile" ) CONFIG_FILES="$CONFIG_FILES Makefile" ;;
   "src/common/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/common/Makefile" ;;
+  "3rdparty/mt19937ar/Makefile" ) CONFIG_FILES="$CONFIG_FILES 3rdparty/mt19937ar/Makefile" ;;
   "src/char/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/char/Makefile" ;;
   "src/login/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/login/Makefile" ;;
   "src/char_sql/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/char_sql/Makefile" ;;
diff --git a/configure.in b/configure.in
index 197a4a4ed..a9e4c289a 100644
--- a/configure.in
+++ b/configure.in
@@ -425,6 +425,22 @@ AC_SUBST([WITH_PLUGINS])
 
 
 #
+# -O2 implies -fstrict-aliasing, but the code is not safe for that
+#
+AC_MSG_CHECKING([whether $CC supports -fno-strict-aliasing])
+OLD_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -fno-strict-aliasing"
+AC_COMPILE_IFELSE(
+	[int foo;],
+	[AC_MSG_RESULT([yes])],
+	[
+		AC_MSG_RESULT([no])
+		CFLAGS="$OLD_CFLAGS"
+	]
+)
+
+
+#
 # DB_MANUAL_CAST_TO_UNION
 #
 AC_MSG_CHECKING([whether $CC is able to typecast to union])