From 9117b724c2b418c68a580f539ebc989cf25ae4f0 Mon Sep 17 00:00:00 2001
From: Eric Frias <efrias@syncad.com>
Date: Thu, 25 Jun 2015 14:28:01 -0400
Subject: [PATCH] Prevent secp256k1 from autodetecting gmp

If we do allow gmp, we will need to change our CMakeLists.txt files to
detect whether secp256k1's configure detected gmp, and if so, link
gmp into all programs that use fc.  For now I just disabled it entirely,
I don't know whether there's any noticable performance benefit to using
it.
---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cfc1512..0fe2951 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -71,7 +71,7 @@ else ( WIN32 )
     ExternalProject_Add( project_secp256k1
      PREFIX ${CMAKE_CURRENT_BINARY_DIR}/vendor/secp256k1-zkp
      SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/vendor/secp256k1-zkp
-     CONFIGURE_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/vendor/secp256k1-zkp/configure --prefix=${CMAKE_CURRENT_BINARY_DIR}/vendor/secp256k1-zkp
+     CONFIGURE_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/vendor/secp256k1-zkp/configure --prefix=${CMAKE_CURRENT_BINARY_DIR}/vendor/secp256k1-zkp --with-bignum=no
      BUILD_COMMAND make
      INSTALL_COMMAND make install
     )