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-rw-r--r--src/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Makefile b/src/Makefile
index b793300b..0577adcd 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -56,7 +56,7 @@ getkey: getkey.o
$(CC) $(LDFLAGS) -o $@ $< -lpopt
ipcalc: ipcalc.o
- $(CC) $(LDFLAGS) -o $@ $< -lpopt
+ $(CC) -D_GNU_SOURCE $(LDFLAGS) -o $@ $< -lpopt
initlog: $(INITLOG_OBJS)
$(CC) $(LDFLAGS) -o $@ $(INITLOG_OBJS) -lpopt