From 83fb1bcef49b1c12ef349f62d90bfcc83f0f7398 Mon Sep 17 00:00:00 2001
From: Jonas Nick <jonasd.nick@gmail.com>
Date: Tue, 17 Dec 2019 12:41:44 +0000
Subject: [PATCH] Remove -O2 from default CFLAGS because this would override
 the -O3 flag (see AC_PROG_CC in the Autoconf manual)

---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index 424f6efb20f6b..a68ef9586951b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,6 +7,10 @@ AH_TOP([#ifndef LIBSECP256K1_CONFIG_H])
 AH_TOP([#define LIBSECP256K1_CONFIG_H])
 AH_BOTTOM([#endif /*LIBSECP256K1_CONFIG_H*/])
 AM_INIT_AUTOMAKE([foreign subdir-objects])
+
+# Set -g (but not -O2 because this would override -O3 which we're adding later)
+# if CFLAGS are not already set (see PROG_CC in the Autoconf manual)
+: ${CFLAGS="-g"}
 LT_INIT
 
 dnl make the compilation flags quiet unless V=1 is used