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-rw-r--r--Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index e4235cb5..e9dbdf7f 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,7 @@ OBJS = $(SRCS:.c=.o)
 LOBJS = $(OBJS:.o=.lo)
 GENH = include/bits/alltypes.h
 
-CFLAGS  = -Os -nostdinc -ffreestanding -pipe
+CFLAGS  = -Os -nostdinc -ffreestanding -std=c99 -D_XOPEN_SOURCE=700 -pipe
 LDFLAGS = -nostdlib -shared -Wl,-Bsymbolic
 INC     = -I./include -I./src/internal
 PIC     = -fPIC