winebuild: Add -m32/-m64 options to allow 32/64-bit cross-compiles.
diff --git a/configure.ac b/configure.ac
index 63ac5aa..72f93b7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -113,6 +113,9 @@
       AS="${AS:-as} --32"
       host_cpu="i386"
       notice_platform="32-bit "
+      AC_SUBST(TARGETFLAGS,"-m32")
+    else
+      AC_SUBST(TARGETFLAGS,"-m64")
     fi
     ;;
 esac