File optflags.patch of Package argon2

diff --git a/Makefile b/Makefile
index 1e1129f..33fe491 100644
--- a/Makefile
+++ b/Makefile
@@ -30,7 +30,7 @@ SRC_BENCH = src/bench.c
 SRC_GENKAT = src/genkat.c
 OBJ = $(SRC:.c=.o)
 
-CFLAGS += -std=c89 -O3 -Wall -g -Iinclude -Isrc
+CFLAGS += $(OPTFLAGS) -Iinclude -Isrc
 
 ifeq ($(NO_THREADS), 1)
 CFLAGS += -DARGON2_NO_THREADS
@@ -41,16 +41,12 @@ endif
 CI_CFLAGS := $(CFLAGS) -Werror=declaration-after-statement -D_FORTIFY_SOURCE=2 \
 				-Wextra -Wno-type-limits -Werror -coverage -DTEST_LARGE_RAM
 
-OPTTARGET ?= native
-OPTTEST := $(shell $(CC) -Iinclude -Isrc -march=$(OPTTARGET) src/opt.c -c \
-			-o /dev/null 2>/dev/null; echo $$?)
 # Detect compatible platform
 ifneq ($(OPTTEST), 0)
 $(info Building without optimizations)
 	SRC += src/ref.c
 else
-$(info Building with optimizations for $(OPTTARGET))
-	CFLAGS += -march=$(OPTTARGET)
+$(info Building with optimizations)
 	SRC += src/opt.c
 endif