DIfference between Python headers, 32-bit vs. 64-bit

pyconfig.h-i686-x86_64.patch

--- a/pyconfig.h	2015-03-13 13:11:55.000000000 +0100
+++ b/pyconfig.h	2015-03-13 13:00:15.000000000 +0100
@@ -309,14 +309,14 @@
 #define HAVE_GAMMA 1
 
 /* Define if we can use x64 gcc inline assembler */
-/* #undef HAVE_GCC_ASM_FOR_X64 */
+#define HAVE_GCC_ASM_FOR_X64 1
 
 /* Define if we can use gcc inline assembler to get and set x87 control word
    */
 #define HAVE_GCC_ASM_FOR_X87 1
 
 /* Define if your compiler provides __uint128_t */
-/* #undef HAVE_GCC_UINT128_T */
+#define HAVE_GCC_UINT128_T 1
 
 /* Define if you have the getaddrinfo function. */
 #define HAVE_GETADDRINFO 1
@@ -461,7 +461,7 @@
    and long long is available and at least as big as an off_t. You may need to
    add some flags for configuration and compilation to enable this mode. (For
    Solaris and Linux, the necessary defines are already defined.) */
-#define HAVE_LARGEFILE_SUPPORT 1
+/* #undef HAVE_LARGEFILE_SUPPORT */
 
 /* Define to 1 if you have the 'lchflags' function. */
 /* #undef HAVE_LCHFLAGS */
@@ -1210,10 +1210,10 @@
 #define SIZEOF_INT 4
 
 /* The size of `long', as computed by sizeof. */
-#define SIZEOF_LONG 4
+#define SIZEOF_LONG 8
 
 /* The size of `long double', as computed by sizeof. */
-#define SIZEOF_LONG_DOUBLE 12
+#define SIZEOF_LONG_DOUBLE 16
 
 /* The size of `long long', as computed by sizeof. */
 #define SIZEOF_LONG_LONG 8
@@ -1225,22 +1225,22 @@
 #define SIZEOF_PID_T 4
 
 /* The size of `pthread_t', as computed by sizeof. */
-#define SIZEOF_PTHREAD_T 4
+#define SIZEOF_PTHREAD_T 8
 
 /* The size of `short', as computed by sizeof. */
 #define SIZEOF_SHORT 2
 
 /* The size of `size_t', as computed by sizeof. */
-#define SIZEOF_SIZE_T 4
+#define SIZEOF_SIZE_T 8
 
 /* The size of `time_t', as computed by sizeof. */
-#define SIZEOF_TIME_T 4
+#define SIZEOF_TIME_T 8
 
 /* The size of `uintptr_t', as computed by sizeof. */
-#define SIZEOF_UINTPTR_T 4
+#define SIZEOF_UINTPTR_T 8
 
 /* The size of `void *', as computed by sizeof. */
-#define SIZEOF_VOID_P 4
+#define SIZEOF_VOID_P 8
 
 /* The size of `wchar_t', as computed by sizeof. */
 #define SIZEOF_WCHAR_T 2
@@ -1344,7 +1344,7 @@
 #endif
 
 /* Define if arithmetic is subject to x87-style double rounding issue */
-#define X87_DOUBLE_ROUNDING 1
+/* #undef X87_DOUBLE_ROUNDING */
 
 /* Define on OpenBSD to activate all library features */
 /* #undef _BSD_SOURCE */