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-rw-r--r--libc/stdio/Makefile4
1 files changed, 4 insertions, 0 deletions
diff --git a/libc/stdio/Makefile b/libc/stdio/Makefile
index e17d9faa5..684380ef0 100644
--- a/libc/stdio/Makefile
+++ b/libc/stdio/Makefile
@@ -121,6 +121,10 @@ ifeq ($(strip $(UCLIBC_HAS_LFS)),y)
OBJS += $(CLOBJS)
endif
+ifeq ($(UCLIBC_HAS_STDIO_FUTEXES),y)
+CFLAGS += -D__USE_STDIO_FUTEXES__
+endif
+
OBJ_LIST=../obj.stdio
all: $(OBJ_LIST)