--- a/config.sub
+++ b/config.sub
@@ -1768,7 +1768,7 @@
 	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
 	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
 	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
-	     | fiwix* | mlibc* | cos* | mbr* | ironclad* )
+	     | fiwix* | mlibc* | cos* | mbr* | ironclad* | montauk* )
 		;;
 	# This one is extra strict with allowed versions
 	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
--- a/bfd/config.bfd
+++ b/bfd/config.bfd
@@ -681,6 +681,11 @@
     targ_selvecs="i386_elf32_vec iamcu_elf32_vec"
     want64=true
     ;;
+  x86_64-*-montauk*)
+    targ_defvec=x86_64_elf64_vec
+    targ_selvecs=i386_elf32_vec
+    want64=true
+    ;;
   x86_64-*-elf* | x86_64-*-rtems* | x86_64-*-fuchsia | x86_64-*-genode*)
     targ_defvec=x86_64_elf64_vec
     targ_selvecs="i386_elf32_vec iamcu_elf32_vec x86_64_elf32_vec"
--- a/gas/configure.tgt
+++ b/gas/configure.tgt
@@ -229,6 +229,7 @@
   i386-*-beos*)				fmt=elf ;;
   i386-*-elfiamcu)			fmt=elf arch=iamcu ;;
   i386-*-elf*)				fmt=elf ;;
+  i386-*-montauk*)			fmt=elf ;;
   i386-*-fuchsia*)			fmt=elf ;;
   i386-*-haiku*)			fmt=elf em=haiku ;;
   i386-*-genode*)			fmt=elf ;;
--- a/ld/configure.tgt
+++ b/ld/configure.tgt
@@ -1036,6 +1036,9 @@
 			tdir_elf_i386=`echo ${targ_alias} | \
 			    sed -e 's/x86_64/i386/' -e 's/aout//'`
 			;;
+x86_64-*-montauk*)	targ_emul=elf_x86_64
+			targ_extra_emuls=elf_i386
+			;;
 x86_64-*-elf* | x86_64-*-rtems* | x86_64-*-fuchsia* | x86_64-*-genode*)
 			targ_emul=elf_x86_64
 			targ_extra_emuls="elf_i386 elf_iamcu elf32_x86_64"
--- a/bfd/sysdep.h
+++ b/bfd/sysdep.h
@@ -27,6 +27,15 @@
 #endif
 
 #include "config.h"
+
+/* MontaukOS provides no runtime TLS yet (no FS-base setup, no PT_TLS
+   handling in the ELF loader), so a _Thread_local access traps at
+   %fs:0. Degrade BFD's thread-local error state to plain globals;
+   the native tools are single-threaded. */
+#ifdef __montauk__
+#undef TLS
+#define TLS
+#endif
 #include <stdio.h>
 
 #ifdef HAVE_SYS_TYPES_H