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-rw-r--r--examples/06-all/Makefile7
1 files changed, 5 insertions, 2 deletions
diff --git a/examples/06-all/Makefile b/examples/06-all/Makefile
index f29c034..5685060 100644
--- a/examples/06-all/Makefile
+++ b/examples/06-all/Makefile
@@ -1,8 +1,11 @@
-CFLAGS=-W -Wall -Wextra -Werror -pedantic -std=c11 -O3 -march=native -mtune=native
+# backend (0 to auto-detect)
+BACKEND ?= 0
+
+CFLAGS=-W -Wall -Wextra -Werror -pedantic -std=c11 -O3 -march=native -mtune=native -DBACKEND=$(BACKEND)
APP=./all-fns
OBJS=sha3.o all-fns.o
-.PHONY=all
+.PHONY=all clean
all: $(APP)