M17: fixed clang undefined reference

modemm17/CMakeLists.txt

@@ -4,6 +4,7 @@ set(modemm17_SOURCES
     Correlator.cpp
     FreqDevEstimator.cpp
     Golay24.cpp
+    LinkSetupFrame.cpp
     M17Demodulator.cpp
     M17Modulator.cpp
 )

modemm17/LinkSetupFrame.cpp

@@ -0,0 +1,9 @@
+#include "LinkSetupFrame.h"
+
+namespace modemm17
+{
+
+const LinkSetupFrame::encoded_call_t LinkSetupFrame::BROADCAST_ADDRESS = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+const LinkSetupFrame::call_t LinkSetupFrame::BROADCAST_CALL = {'B', 'R', 'O', 'A', 'D', 'C', 'A', 'S', 'T', 0};
+
+}

modemm17/LinkSetupFrame.h

@@ -18,8 +18,8 @@ struct LinkSetupFrame
     using gnss_t = std::array<uint8_t, 14>;
     using frame_t = std::array<uint8_t, 30>;
 
-    static constexpr encoded_call_t BROADCAST_ADDRESS = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
-    static constexpr call_t BROADCAST_CALL = {'B', 'R', 'O', 'A', 'D', 'C', 'A', 'S', 'T', 0};
+    static const encoded_call_t BROADCAST_ADDRESS;
+    static const call_t BROADCAST_CALL;
 
     enum TxType { PACKET, STREAM };
     enum DataType { DT_RESERVED, DATA, VOICE, MIXED };