1 files changed, 4 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index d738559..f79b9da 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,10 @@ SFEED_CFLAGS = ${CFLAGS}
 SFEED_LDFLAGS = ${LDFLAGS}
 SFEED_CPPFLAGS = -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -D_BSD_SOURCE
 
+# uncomment for convervative locked I/O.
+#SFEED_CPPFLAGS = -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -D_BSD_SOURCE \
+#	-DGETNEXT=getchar
+
 BIN = \
 	sfeed\
 	sfeed_atom\