From 525d69ef54238034519e43292348bea217962cbc Mon Sep 17 00:00:00 2001
From: subtly <subtly@users.noreply.github.com>
Date: Thu, 6 Aug 2015 12:56:43 +0200
Subject: [PATCH 1/2] defs for 32-bit secp256k1

---
 secp256k1/libsecp256k1-config.h | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/secp256k1/libsecp256k1-config.h b/secp256k1/libsecp256k1-config.h
index d23fee837..ac590cee7 100644
--- a/secp256k1/libsecp256k1-config.h
+++ b/secp256k1/libsecp256k1-config.h
@@ -51,7 +51,9 @@
 #define HAVE_UNISTD_H 1
 
 /* Define to 1 if the system has the type `__int128'. */
+#if defined(__x86_64__) || defined(_M_X64)
 #define HAVE___INT128 1
+#endif
 
 /* Define to the sub-directory where libtool stores uninstalled libraries. */
 #define LT_OBJDIR ".libs/"
@@ -81,16 +83,18 @@
 #define STDC_HEADERS 1
 
 /* Define this symbol to enable x86_64 assembly optimizations */
-/* #undef USE_ASM_X86_64 */
+// #if defined(__APPLE__) || defined(__GNUC__)
+// #defined USE_ASM_X86_64 1
+// #endif
 
 /* Define this symbol to use endomorphism optimization */
 /* #undef USE_ENDOMORPHISM */
 
-/* Define this symbol to use the FIELD_10X26 implementation */
-/* #undef USE_FIELD_10X26 */
-
-/* Define this symbol to use the FIELD_5X52 implementation */
+#if defined(__x86_64__) || defined(_M_X64)
 #define USE_FIELD_5X52 1
+#elif defined(__i386) || defined(_M_IX86)
+#define USE_FIELD_10X26 1
+#endif
 
 /* Define this symbol to use the native field inverse implementation */
 /* #undef USE_FIELD_INV_BUILTIN */
@@ -104,11 +108,11 @@
 /* Define this symbol to use no num implementation */
 /* #undef USE_NUM_NONE */
 
-/* Define this symbol to use the 4x64 scalar implementation */
+#if defined(__x86_64__) || defined(_M_X64)
 #define USE_SCALAR_4X64 1
-
-/* Define this symbol to use the 8x32 scalar implementation */
-/* #undef USE_SCALAR_8X32 */
+#elif defined(__i386) || defined(_M_IX86)
+#define USE_SCALAR_8X32 1
+#endif
 
 /* Define this symbol to use the native scalar inverse implementation */
 /* #undef USE_SCALAR_INV_BUILTIN */

From 09c8fa4fafe01647d9ef2bcea7829950ab6d79c3 Mon Sep 17 00:00:00 2001
From: subtly <subtly>
Date: Thu, 6 Aug 2015 19:39:25 +0100
Subject: [PATCH 2/2] fix build

---
 secp256k1/libsecp256k1-config.h | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/secp256k1/libsecp256k1-config.h b/secp256k1/libsecp256k1-config.h
index ac590cee7..0cbbc2434 100644
--- a/secp256k1/libsecp256k1-config.h
+++ b/secp256k1/libsecp256k1-config.h
@@ -83,9 +83,7 @@
 #define STDC_HEADERS 1
 
 /* Define this symbol to enable x86_64 assembly optimizations */
-// #if defined(__APPLE__) || defined(__GNUC__)
-// #defined USE_ASM_X86_64 1
-// #endif
+/* #undef USE_ASM_X86_64 */
 
 /* Define this symbol to use endomorphism optimization */
 /* #undef USE_ENDOMORPHISM */