From 8ef19c64e518a71ae0fae3eda0db9866c4a00e22 Mon Sep 17 00:00:00 2001
From: = <=>
Date: Mon, 27 Nov 2023 16:42:03 +0100
Subject: [PATCH] prepare BPF high level compiler

---
 Makefile           | 5 ++++-
 include/radiotap.h | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 7c28dca65..98b30ac81 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,10 @@ CFLAGS		?= -O3 -Wall -Wextra -Wpedantic
 CFLAGS		+= -std=gnu99
 #CFLAGS		+= -ggdb -fsanitize=address
 DEFS		= -DVERSION_TAG=\"$(VERSION_TAG)\" -DVERSION_YEAR=\"$(VERSION_YEAR)\"
-DEFS		+= -DSTATUSOUT -DNMEAOUT
+# comment to disable GPS support
+DEFS		+= -DNMEAOUT
+# comment to disable STATUS display (headless operation)
+DEFS		+= -DSTATUSOUT
 
 INSTALL		?= install
 INSTFLAGS	=
diff --git a/include/radiotap.h b/include/radiotap.h
index 7597b7462..eba5ec9fc 100644
--- a/include/radiotap.h
+++ b/include/radiotap.h
@@ -1,5 +1,7 @@
 /*===========================================================================*/
+#ifndef DLT_IEEE802_11_RADIO
 #define	DLT_IEEE802_11_RADIO	127
+#endif
 /*===========================================================================*/
 #define IEEE80211_RADIOTAP_TSFT			0x00000001
 #define IEEE80211_RADIOTAP_FLAGS		0x00000002