diff -up ./setup.py.orig ./setup.py

--- ./setup.py.orig	2018-02-04 21:03:07.000000000 +0100

+++ ./setup.py	2018-03-06 13:25:27.459746877 +0100

@@ -204,9 +204,6 @@ class PCTBuildExt (build_ext):

         return []

     def build_extensions(self):

-        # Disable any assembly in libtomcrypt files

-        self.compiler.define_macro("LTC_NO_ASM")

-

         # Detect which modules should be compiled

         self.detect_modules()

@@ -543,11 +540,13 @@ ext_modules = [

         include_dirs=['src/'],

         sources=["src/CAST.c"]),

     Extension("Crypto.Cipher._raw_des",

-        include_dirs=['src/', 'src/libtom/'],

+        include_dirs=['src/'],

+        extra_link_args=['-ltomcrypt'],

         sources=["src/DES.c"]),

     Extension("Crypto.Cipher._raw_des3",

-        include_dirs=['src/', 'src/libtom/'],

-        sources=["src/DES3.c"]),

+        include_dirs=['src/'],

+        sources=["src/DES3.c"],

+        extra_link_args=['-ltomcrypt']),

     Extension("Crypto.Util._galois",

         include_dirs=['src/'],

         sources=['src/galois.c']),

@@ -580,8 +579,9 @@ ext_modules = [

         include_dirs=['src/'],

         sources=["src/ARC4.c"]),

     Extension("Crypto.Cipher._Salsa20",

-        include_dirs=['src/', 'src/libtom/'],

-        sources=["src/Salsa20.c"]),

+        include_dirs=['src/'],

+        sources=["src/Salsa20.c"],

+        extra_link_args=['-ltomcrypt']),

     Extension("Crypto.Cipher._chacha20",

         include_dirs=['src/'],

         sources=["src/chacha20.c"]),

diff -up ./src/DES.c.orig ./src/DES.c

--- ./src/DES.c.orig	2018-02-04 21:03:07.000000000 +0100

+++ ./src/DES.c	2018-03-06 13:11:55.318990638 +0100

@@ -39,7 +39,7 @@ FAKE_INIT(raw_des3)

 /* Include the actial DES implementation */

 #define LTC_NO_PROTOTYPES

-#include "libtom/tomcrypt_des.c"

+#include <tomcrypt.h>

 typedef struct {

     symmetric_key sk;

diff -up ./src/Salsa20.c.orig ./src/Salsa20.c

--- ./src/Salsa20.c.orig	2018-02-04 21:03:07.000000000 +0100

+++ ./src/Salsa20.c	2018-03-06 13:03:37.616222145 +0100

@@ -29,9 +29,7 @@

 FAKE_INIT(Salsa20)

-#include "libtom/tomcrypt_cfg.h"

-#include "libtom/tomcrypt_custom.h"

-#include "libtom/tomcrypt_macros.h"

+#include <tomcrypt.h>

 #define ROUNDS 20

 #define MAX_KEY_SIZE 32