diff -ru a/src/DES_bs.c b/src/DES_bs.c

--- a/src/DES_bs.c	2012-07-14 09:36:44.000000000 -0400

+++ b/src/DES_bs.c	2016-08-07 15:08:48.011369100 -0400

@@ -52,7 +52,7 @@

 };

 #if DES_BS_ASM

-extern void DES_bs_init_asm(void);

+extern void DES_INTERNAL DES_bs_init_asm(void);

 #endif

 void DES_bs_init(int LM, int cpt)

--- a/src/DES_bs.h	2013-05-06 02:19:49.000000000 -0400

+++ b/src/DES_bs.h	2019-02-23 12:06:05.913582953 -0500

@@ -35,6 +35,16 @@

 #define DES_bs_vector			ARCH_WORD

 #endif

+#ifndef HAVE_INTERNAL_ATTR

+#define HAVE_INTERNAL_ATTR 0

+#endif

+

+#if     HAVE_INTERNAL_ATTR

+#define DES_INTERNAL  __attribute__((visibility("internal")))

+#else

+#define DES_INTERNAL

+#endif

+

 /*

  * All bitslice DES parameters combined into one struct for more efficient

  * cache usage. Don't re-order unless you know what you're doing, as there

@@ -112,7 +122,7 @@

 #else

 #define DES_bs_mt			0

 #define DES_bs_cpt			1

-extern DES_bs_combined DES_bs_all;

+extern  DES_INTERNAL DES_bs_combined DES_bs_all;

 #define for_each_t(n)

 #define init_t()

 #endif

@@ -120,7 +130,7 @@

 /*

  * Initializes the internal structures.

  */

-extern void DES_bs_init(int LM, int cpt);

+extern void DES_INTERNAL DES_bs_init(int LM, int cpt);

 /*

  * Sets a salt for DES_bs_crypt().

@@ -139,17 +149,17 @@

 /*

  * Almost generic implementation: 24-bit salts, variable iteration count.

  */

-extern void DES_bs_crypt(int count, int keys_count);

+extern void DES_INTERNAL DES_bs_crypt(int count, int keys_count);

 /*

  * A simplified special-case implementation: 12-bit salts, 25 iterations.

  */

-extern void DES_bs_crypt_25(int keys_count);

+extern void DES_INTERNAL DES_bs_crypt_25(int keys_count);

 /*

  * Another special-case version: a non-zero IV, no salts, no iterations.

  */

-extern int DES_bs_crypt_LM(int *keys_count, struct db_salt *salt);

+extern int DES_INTERNAL DES_bs_crypt_LM(int *keys_count, struct db_salt *salt);

 /*

  * Converts an ASCII ciphertext to binary to be used with one of the

--- john-1.8.0/src/Makefile.orig	2013-05-29 23:21:25.000000000 +0000

+++ john-1.8.0/src/Makefile	2016-09-11 21:19:18.930129331 +0000

@@ -32,7 +32,7 @@

 # CFLAGS for use on the main john.c file only

 CFLAGS_MAIN = $(CFLAGS)

 ASFLAGS = -c $(OMPFLAGS)

-LDFLAGS = -s $(OMPFLAGS)

+LDFLAGS = $(LDFLAGS_DEBUG) $(OMPFLAGS)

 OPT_NORMAL = -funroll-loops

 # Remove the "-Os" if you're using an ancient version of gcc

 OPT_INLINE = -Os -funroll-loops -finline-functions

@@ -104,6 +104,13 @@

 #	@echo "linux-ppc64-altivec      Linux, PowerPC 64-bit w/AltiVec"

 	@echo "linux-ppc64              Linux, PowerPC 64-bit"

 	@echo "linux-ia64               Linux, IA-64"

+	@echo "midipix-x86-64-avx       Midipix, x86-64 with AVX (2011+ Intel CPUs)"

+	@echo "midipix-x86-64           Midipix, x86-64 with SSE2 (most common)"

+	@echo "midipix-x86-avx          Midipix, x86 32-bit with AVX (2011+ Intel CPUs)"

+	@echo "midipix-x86-xop          Midipix, x86 32-bit with AVX and XOP (2011+ AMD CPUs)"

+	@echo "midipix-x86-sse2         Midipix, x86 32-bit with SSE2 (most common, if 32-bit)"

+	@echo "midipix-x86-mmx          Midipix, x86 32-bit with MMX (for old computers)"

+	@echo "midipix-x86-any          Midipix, x86 32-bit (for truly ancient computers)"

 	@echo "freebsd-x86-64           FreeBSD, x86-64 with SSE2 (best)"

 	@echo "freebsd-x86-sse2         FreeBSD, x86 with SSE2 (best if 32-bit)"

 	@echo "freebsd-x86-mmx          FreeBSD, x86 with MMX"

@@ -306,6 +313,64 @@

 		CFLAGS="$(CFLAGS) -DHAVE_CRYPT" \

 		LDFLAGS="$(LDFLAGS) -lcrypt"

+midipix-x86-64-avx:

+	$(LN) x86-64.h arch.h

+	$(MAKE) $(PROJ) \

+		JOHN_OBJS="$(JOHN_OBJS) c3_fmt.o x86-64.o" \

+		CFLAGS_MAIN="$(CFLAGS) -DJOHN_AVX -DHAVE_CRYPT -fvisibility=hidden -DHAVE_INTERNAL_ATTR" \

+		CFLAGS="$(CFLAGS) -mavx -DHAVE_CRYPT -fvisibility=hidden -DHAVE_INTERNAL_ATTR" \

+		ASFLAGS="$(ASFLAGS) -mavx" \

+		LDFLAGS="$(LDFLAGS) -lcrypt"

+

+midipix-x86-64:

+	$(LN) x86-64.h arch.h

+	$(MAKE) $(PROJ) \

+		JOHN_OBJS="$(JOHN_OBJS) c3_fmt.o x86-64.o" \

+		CFLAGS="$(CFLAGS) -DHAVE_CRYPT -fvisibility=hidden -DHAVE_INTERNAL_ATTR" \

+		LDFLAGS="$(LDFLAGS) -lcrypt"

+

+midipix-x86-avx:

+	$(LN) x86-sse.h arch.h

+	$(MAKE) $(PROJ) \

+		JOHN_OBJS="$(JOHN_OBJS) c3_fmt.o x86.o" \

+		CFLAGS_MAIN="$(CFLAGS) -m32 -DJOHN_AVX -DHAVE_CRYPT -fvisibility=hidden -DUNDERSCORES" \

+		CFLAGS="$(CFLAGS) -m32 -mavx -DHAVE_CRYPT -fvisibility=hidden -DHAVE_INTERNAL_ATTR -DUNDERSCORES" \

+		ASFLAGS="$(ASFLAGS) -m32 -mavx -DUNDERSCORES" \

+		LDFLAGS="$(LDFLAGS) -m32 -lcrypt"

+

+midipix-x86-xop:

+	$(LN) x86-sse.h arch.h

+	$(MAKE) $(PROJ) \

+		JOHN_OBJS="$(JOHN_OBJS) c3_fmt.o x86.o" \

+		CFLAGS_MAIN="$(CFLAGS) -m32 -DJOHN_XOP -DHAVE_CRYPT -fvisibility=hidden -DUNDERSCORES" \

+		CFLAGS="$(CFLAGS) -m32 -mxop -DHAVE_CRYPT -fvisibility=hidden -DHAVE_INTERNAL_ATTR -DUNDERSCORES" \

+		ASFLAGS="$(ASFLAGS) -m32 -mxop -DUNDERSCORES" \

+		LDFLAGS="$(LDFLAGS) -m32 -lcrypt"

+

+midipix-x86-sse2:

+	$(LN) x86-sse.h arch.h

+	$(MAKE) $(PROJ) \

+		JOHN_OBJS="$(JOHN_OBJS) c3_fmt.o x86.o x86-sse.o" \

+		CFLAGS="$(CFLAGS) -DHAVE_CRYPT -fvisibility=hidden -DHAVE_INTERNAL_ATTR -DUNDERSCORES" \

+		ASFLAGS="$(ASFLAGS) -m32 -DUNDERSCORES" \

+		LDFLAGS="$(LDFLAGS) -lcrypt"

+

+midipix-x86-mmx:

+	$(LN) x86-mmx.h arch.h

+	$(MAKE) $(PROJ) \

+		JOHN_OBJS="$(JOHN_OBJS) c3_fmt.o x86.o x86-mmx.o" \

+		CFLAGS="$(CFLAGS) -DHAVE_CRYPT -fvisibility=hidden -DHAVE_INTERNAL_ATTR -DUNDERSCORES" \

+		ASFLAGS="$(ASFLAGS) -m32 -DUNDERSCORES" \

+		LDFLAGS="$(LDFLAGS) -lcrypt"

+

+midipix-x86-any:

+	$(LN) x86-any.h arch.h

+	$(MAKE) $(PROJ) \

+		JOHN_OBJS="$(JOHN_OBJS) c3_fmt.o x86.o" \

+		CFLAGS="$(CFLAGS) -DHAVE_CRYPT -fvisibility=hidden -DHAVE_INTERNAL_ATTR -DUNDERSCORES" \

+		ASFLAGS="$(ASFLAGS) -m32 -DUNDERSCORES" \

+		LDFLAGS="$(LDFLAGS) -lcrypt"

+

 freebsd-x86-64:

 	$(LN) x86-64.h arch.h

 	$(MAKE) $(PROJ) \