From cbe805d82a7355ee4b7506dc8510abe56c7eb4b5 Mon Sep 17 00:00:00 2001
From: Andrew Hlynskyi <ahlincq@gmail.com>
Date: Thu, 17 Aug 2023 15:00:58 +0300
Subject: [PATCH] Allow override Makefile CFLAGS by appending and not by
 overwriting

---
 Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 59554e1d..57f19da3 100644
--- a/Makefile
+++ b/Makefile
@@ -18,8 +18,8 @@ endif
 OBJ := $(SRC:.c=.o)
 
 # define default flags, and override to append mandatory flags
-CFLAGS ?= -O3 -Wall -Wextra -Werror -Wshadow
-override CFLAGS += -std=gnu99 -fPIC -Ilib/src -Ilib/include
+override CFLAGS := -O3 -std=gnu99 -fPIC -Wall -Wextra -Werror -Wshadow $(CFLAGS)
+override CFLAGS += -Ilib/src -Ilib/include
 
 # ABI versioning
 SONAME_MAJOR := 0