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-rw-r--r--tests/bench/Makefile6
1 files changed, 4 insertions, 2 deletions
diff --git a/tests/bench/Makefile b/tests/bench/Makefile
index d1106bf..307cb23 100644
--- a/tests/bench/Makefile
+++ b/tests/bench/Makefile
@@ -1,5 +1,7 @@
-# CFLAGS=-std=c11 -W -Wall -Wextra -Wpedantic -Werror -g -O3 -march=native -mtune=native -DSHA3_BACKEND=0
-CFLAGS=-std=c11 -W -Wall -Wextra -Wpedantic -Werror -g -O3 -march=native -mtune=native
+# get backend from environment, or fall back to 0 if unspecified
+SHA3_BACKEND ?= 0
+
+CFLAGS=-std=c11 -W -Wall -Wextra -Wpedantic -Werror -g -O3 -march=native -mtune=native -DSHA3_BACKEND=$(SHA3_BACKEND)
APP=./bench
OBJS=sha3.o bench.o