--- config.gcc	2020-06-01 20:40:52.562801089 +0200
+++ configm.gcc	2020-06-01 20:41:49.970576321 +0200
@@ -180,7 +180,7 @@
 #			the --with-sysroot configure option or the
 #			--sysroot command line option is used this
 #			will be relative to the sysroot.
-# target_type_format_char 
+# target_type_format_char
 # 			The default character to be used for formatting
 #			the attribute in a
 #			.type symbol_name, ${t_t_f_c}<property>
@@ -1865,6 +1865,7 @@
 	tm_file="${tm_file} i386/unix.h i386/att.h dbxelf.h elfos.h newlib-stdint.h i386/i386elf.h"
 	;;
 x86_64-*-elf*)
+	tmake_file="${tmake_file} i386/t-x86_64-elf" # include the new multilib configuration to prevent red-zone
 	tm_file="${tm_file} i386/unix.h i386/att.h dbxelf.h elfos.h newlib-stdint.h i386/i386elf.h i386/x86-64.h"
 	;;
 x86_64-*-rtems*)