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-rw-r--r--tests/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/Makefile b/tests/Makefile
index d11b7fe..25f00b8 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -39,7 +39,7 @@ CFLAGS += -Wall -Wextra -Wundef -Wcast-qual -Wcast-align -Wshadow \
-Wswitch-enum -Wdeclaration-after-statement -Wstrict-prototypes \
-Wpointer-arith -Wstrict-aliasing=1
CFLAGS += $(DEBUGFLAGS) $(MOREFLAGS)
-CPPFLAGS:= -I$(LZ4DIR) -I$(PRGDIR) -DXXH_NAMESPACE=LZ4_
+CPPFLAGS+= -I$(LZ4DIR) -I$(PRGDIR) -DXXH_NAMESPACE=LZ4_
FLAGS = $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)