Define PRIVATE and add it to all global symbols so we don't export assembly functions.

libvpx/source/libvpx/vp8/encoder/x86/sad_sse2.asm

 ;
 ;  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 ;
 ;  Use of this source code is governed by a BSD-style license
 ;  that can be found in the LICENSE file in the root of the source
 ;  tree. An additional intellectual property rights grant can be found
 ;  in the file PATENTS.  All contributing project authors may
 ;  be found in the AUTHORS file in the root of the source tree.
 ;
 
 
 %include "vpx_ports/x86_abi_support.asm"
 
 ;unsigned int vp8_sad16x16_wmt(
 ;    unsigned char *src_ptr,
 ;    int  src_stride,
 ;    unsigned char *ref_ptr,
 ;    int  ref_stride)
-global sym(vp8_sad16x16_wmt)
+global sym(vp8_sad16x16_wmt) PRIVATE
 sym(vp8_sad16x16_wmt):
     push        rbp
     mov         rbp, rsp
     SHADOW_ARGS_TO_STACK 4
     push        rsi
     push        rdi
     ; end prolog
 
         mov             rsi,        arg(0) ;src_ptr
         mov             rdi,        arg(2) ;ref_ptr
@@ skipping 51 matching lines @@
     UNSHADOW_ARGS
     pop         rbp
     ret
 
 ;unsigned int vp8_sad8x16_wmt(
 ;    unsigned char *src_ptr,
 ;    int  src_stride,
 ;    unsigned char *ref_ptr,
 ;    int  ref_stride,
 ;    int  max_err)
-global sym(vp8_sad8x16_wmt)
+global sym(vp8_sad8x16_wmt) PRIVATE
 sym(vp8_sad8x16_wmt):
     push        rbp
     mov         rbp, rsp
     SHADOW_ARGS_TO_STACK 5
     push        rbx
     push        rsi
     push        rdi
     ; end prolog
 
         mov             rsi,        arg(0) ;src_ptr
@@ skipping 42 matching lines @@
     UNSHADOW_ARGS
     pop         rbp
     ret
 
 
 ;unsigned int vp8_sad8x8_wmt(
 ;    unsigned char *src_ptr,
 ;    int  src_stride,
 ;    unsigned char *ref_ptr,
 ;    int  ref_stride)
-global sym(vp8_sad8x8_wmt)
+global sym(vp8_sad8x8_wmt) PRIVATE
 sym(vp8_sad8x8_wmt):
     push        rbp
     mov         rbp, rsp
     SHADOW_ARGS_TO_STACK 5
     push        rbx
     push        rsi
     push        rdi
     ; end prolog
 
         mov             rsi,        arg(0) ;src_ptr
@@ skipping 32 matching lines @@
     pop         rbx
     UNSHADOW_ARGS
     pop         rbp
     ret
 
 ;unsigned int vp8_sad4x4_wmt(
 ;    unsigned char *src_ptr,
 ;    int  src_stride,
 ;    unsigned char *ref_ptr,
 ;    int  ref_stride)
-global sym(vp8_sad4x4_wmt)
+global sym(vp8_sad4x4_wmt) PRIVATE
 sym(vp8_sad4x4_wmt):
     push        rbp
     mov         rbp, rsp
     SHADOW_ARGS_TO_STACK 4
     push        rsi
     push        rdi
     ; end prolog
 
         mov             rsi,        arg(0) ;src_ptr
         mov             rdi,        arg(2) ;ref_ptr
@@ skipping 34 matching lines @@
     UNSHADOW_ARGS
     pop         rbp
     ret
 
 
 ;unsigned int vp8_sad16x8_wmt(
 ;    unsigned char *src_ptr,
 ;    int  src_stride,
 ;    unsigned char *ref_ptr,
 ;    int  ref_stride)
-global sym(vp8_sad16x8_wmt)
+global sym(vp8_sad16x8_wmt) PRIVATE
 sym(vp8_sad16x8_wmt):
     push        rbp
     mov         rbp, rsp
     SHADOW_ARGS_TO_STACK 5
     push        rbx
     push        rsi
     push        rdi
     ; end prolog
 
 
@@ skipping 46 matching lines @@
 
 x16x8sad_wmt_early_exit:
 
     ; begin epilog
     pop         rdi
     pop         rsi
     pop         rbx
     UNSHADOW_ARGS
     pop         rbp
     ret