From d94a9273f82aeb468f9c48f6da5ee9abc64c024a Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Mon, 1 Jul 2024 20:41:36 +0100
Subject: [PATCH] build: Adjust the default size of the precomputed table for
 signing

The new default value of the precomputed table for signing is aligned
with Bitcoin Core's default.
See: https://github.com/bitcoin/bitcoin/commit/a057869aa3c42457570765966cb66accb2375b13
---
 CMakeLists.txt | 2 +-
 configure.ac   | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8d1e8e40..7a876860 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -90,7 +90,7 @@ include(CheckStringOptionValue)
 check_string_option_value(SECP256K1_ECMULT_WINDOW_SIZE)
 add_compile_definitions(ECMULT_WINDOW_SIZE=${SECP256K1_ECMULT_WINDOW_SIZE})
 
-set(SECP256K1_ECMULT_GEN_KB 22 CACHE STRING "The size of the precomputed table for signing in multiples of 1024 bytes (on typical platforms). Larger values result in possibly better signing or key generation performance at the cost of a larger table. Valid choices are 2, 22, 86. The default value is a reasonable setting for desktop machines (currently 22). [default=22]")
+set(SECP256K1_ECMULT_GEN_KB 86 CACHE STRING "The size of the precomputed table for signing in multiples of 1024 bytes (on typical platforms). Larger values result in possibly better signing or key generation performance at the cost of a larger table. Valid choices are 2, 22, 86. The default value is a reasonable setting for desktop machines (currently 86). [default=86]")
 set_property(CACHE SECP256K1_ECMULT_GEN_KB PROPERTY STRINGS 2 22 86)
 check_string_option_value(SECP256K1_ECMULT_GEN_KB)
 if(SECP256K1_ECMULT_GEN_KB EQUAL 2)
diff --git a/configure.ac b/configure.ac
index adae1897..24918885 100644
--- a/configure.ac
+++ b/configure.ac
@@ -216,9 +216,9 @@ AC_ARG_WITH([ecmult-window], [AS_HELP_STRING([--with-ecmult-window=SIZE],
 AC_ARG_WITH([ecmult-gen-kb], [AS_HELP_STRING([--with-ecmult-gen-kb=2|22|86],
 [The size of the precomputed table for signing in multiples of 1024 bytes (on typical platforms).]
 [Larger values result in possibly better signing/keygeneration performance at the cost of a larger table.]
-[The default value is a reasonable setting for desktop machines (currently 22). [default=22]]
+[The default value is a reasonable setting for desktop machines (currently 86). [default=86]]
 )],
-[set_ecmult_gen_kb=$withval], [set_ecmult_gen_kb=22])
+[set_ecmult_gen_kb=$withval], [set_ecmult_gen_kb=86])
 
 AC_ARG_WITH([valgrind], [AS_HELP_STRING([--with-valgrind=yes|no|auto],
 [Build with extra checks for running inside Valgrind [default=auto]]