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-rw-r--r--gr-vocoder/include/gnuradio/vocoder/freedv_api.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/gr-vocoder/include/gnuradio/vocoder/freedv_api.h b/gr-vocoder/include/gnuradio/vocoder/freedv_api.h
index b00cbbd425..04c768bcb7 100644
--- a/gr-vocoder/include/gnuradio/vocoder/freedv_api.h
+++ b/gr-vocoder/include/gnuradio/vocoder/freedv_api.h
@@ -25,11 +25,18 @@
#include <gnuradio/vocoder/api.h>
+// version >=0.9.1 contains fixes that doesn't require "extern C"
+// between 0.8.1 and 0.9.1 the build fail
+#include <codec2/version.h>
+#if CODEC2_VERSION_MAJOR == 0 && CODEC2_VERSION_MINOR < 9
extern "C" {
+#endif
#include <codec2/codec2.h>
#include <codec2/freedv_api.h>
#include <codec2/modem_stats.h>
+#if CODEC2_VERSION_MAJOR == 0 && CODEC2_VERSION_MINOR < 9
}
+#endif
namespace gr {
namespace vocoder {