Bug 1221456 - Avoid C4819 warning spam. r=glandium

js/src/configure.in

@@ -350,7 +350,10 @@ case "$target" in
         # that behavior) that it's better to turn it off.
         # _CRT_SECURE_NO_WARNINGS disables warnings about using MSVC-specific
         # secure CRT functions.
-        CXXFLAGS="$CXXFLAGS -wd4345 -wd4351 -wd4800 -D_CRT_SECURE_NO_WARNINGS"
+        # MSVC warning C4819 warns some UTF-8 characters (e.g. copyright sign)
+        # on non-Western system locales even if it is in a comment.
+        CFLAGS="$CFLAGS -wd4819"
+        CXXFLAGS="$CXXFLAGS -wd4345 -wd4351 -wd4800 -wd4819 -D_CRT_SECURE_NO_WARNINGS"
         AC_LANG_SAVE
         AC_LANG_C
         AC_TRY_COMPILE([#include <stdio.h>],