diff -Naur libffi-3.1.orig/Makefile.am libffi-3.1/Makefile.am
--- libffi-3.1.orig/Makefile.am	2014-07-11 11:39:48.902401983 -0600
+++ libffi-3.1/Makefile.am	2014-07-11 11:47:55.798678458 -0600
@@ -138,9 +138,9 @@
 endif
 if X86_DARWIN
 nodist_libffi_la_SOURCES += src/x86/ffi.c src/x86/darwin.S src/x86/ffi64.c src/x86/darwin64.S
-if X86_DARWIN32
-nodist_libffi_la_SOURCES += src/x86/win32.S
-endif
+#if X86_DARWIN32
+#nodist_libffi_la_SOURCES += src/x86/win32.S
+#endif
 endif
 if SPARC
 nodist_libffi_la_SOURCES += src/sparc/ffi.c src/sparc/v8.S src/sparc/v9.S
diff -Naur libffi-3.1.orig/Makefile.in libffi-3.1/Makefile.in
--- libffi-3.1.orig/Makefile.in	2014-07-11 11:49:38.360000568 -0600
+++ libffi-3.1/Makefile.in	2014-07-11 11:56:13.915099572 -0600
@@ -88,7 +88,7 @@
 @X86_WIN32_TRUE@am__append_6 = src/x86/ffi.c src/x86/win32.S
 @X86_WIN64_TRUE@am__append_7 = src/x86/ffi.c src/x86/win64.S
 @X86_DARWIN_TRUE@am__append_8 = src/x86/ffi.c src/x86/darwin.S src/x86/ffi64.c src/x86/darwin64.S
-@X86_DARWIN32_TRUE@@X86_DARWIN_TRUE@am__append_9 = src/x86/win32.S
+#@X86_DARWIN32_TRUE@@X86_DARWIN_TRUE@am__append_9 = src/x86/win32.S
 @SPARC_TRUE@am__append_10 = src/sparc/ffi.c src/sparc/v8.S src/sparc/v9.S
 @ALPHA_TRUE@am__append_11 = src/alpha/ffi.c src/alpha/osf.S
 @IA64_TRUE@am__append_12 = src/ia64/ffi.c src/ia64/unix.S
@@ -198,7 +198,7 @@
 @X86_WIN64_TRUE@am__objects_7 = src/x86/ffi.lo src/x86/win64.lo
 @X86_DARWIN_TRUE@am__objects_8 = src/x86/ffi.lo src/x86/darwin.lo \
 @X86_DARWIN_TRUE@	src/x86/ffi64.lo src/x86/darwin64.lo
-@X86_DARWIN32_TRUE@@X86_DARWIN_TRUE@am__objects_9 = src/x86/win32.lo
+#@X86_DARWIN32_TRUE@@X86_DARWIN_TRUE@am__objects_9 = src/x86/win32.lo
 @SPARC_TRUE@am__objects_10 = src/sparc/ffi.lo src/sparc/v8.lo \
 @SPARC_TRUE@	src/sparc/v9.lo
 @ALPHA_TRUE@am__objects_11 = src/alpha/ffi.lo src/alpha/osf.lo
diff -Naur libffi-3.1.orig/src/x86/ffi.c libffi-3.1/src/x86/ffi.c
--- libffi-3.1.orig/src/x86/ffi.c	2014-07-11 11:39:48.902401983 -0600
+++ libffi-3.1/src/x86/ffi.c	2014-07-11 14:02:24.743088317 -0600
@@ -331,10 +331,11 @@
 extern int
 ffi_call_win64(void (*)(char *, extended_cif *), extended_cif *,
                unsigned, unsigned, unsigned *, void (*fn)(void));
-#else
+#elif defined(X86_WIN32)
 extern void
 ffi_call_win32(void (*)(char *, extended_cif *), extended_cif *,
                unsigned, unsigned, unsigned, unsigned *, void (*fn)(void));
+#else
 extern void ffi_call_SYSV(void (*)(char *, extended_cif *), extended_cif *,
                           unsigned, unsigned, unsigned *, void (*fn)(void));
 #endif
@@ -386,6 +387,7 @@
     case FFI_SYSV:
     case FFI_MS_CDECL:
 #endif
+#ifdef X86_WIN32
     case FFI_STDCALL:
       ffi_call_win32(ffi_prep_args, &ecif, cif->abi, cif->bytes, cif->flags,
 		     ecif.rvalue, fn);
@@ -420,6 +422,7 @@
       }
       break;
 #endif
+#endif
     default:
       FFI_ASSERT(0);
       break;
@@ -674,6 +677,7 @@
                            &ffi_closure_SYSV,
                            (void*)codeloc);
     }
+#ifdef X86_WIN32
   else if (cif->abi == FFI_FASTCALL)
     {
       FFI_INIT_TRAMPOLINE_STDCALL (&closure->tramp[0],
@@ -692,6 +696,7 @@
                                    &ffi_closure_STDCALL,
                                    (void*)codeloc);
     }
+#endif
 #ifdef X86_WIN32
   else if (cif->abi == FFI_MS_CDECL)
     {
@@ -808,6 +813,7 @@
     case FFI_SYSV:
     case FFI_MS_CDECL:
 #endif
+#ifdef X86_WIN32
 #ifndef X86_WIN64
     case FFI_STDCALL:
       ffi_call_win32(ffi_prep_args_raw, &ecif, cif->abi, cif->bytes, cif->flags,
@@ -843,6 +849,7 @@
       }
       break;
 #endif
+#endif
     default:
       FFI_ASSERT(0);
       break;