Add compatibility with the new GNU Radio 3.9 API that uses C++11 standard smart pointers instead of Boost smart pointers

src/algorithms/PVT/gnuradio_blocks/CMakeLists.txt

@@ -43,6 +43,12 @@ target_link_libraries(pvt_gr_blocks
         Boost::serialization
 )
 
+if(GNURADIO_USES_STD_POINTERS)
+    target_compile_definitions(pvt_gr_blocks
+        PUBLIC -DGNURADIO_USES_STD_POINTERS=1
+    )
+endif()
+
 if(ENABLE_CLANG_TIDY)
     if(CLANG_TIDY_EXE)
         set_target_properties(pvt_gr_blocks

src/algorithms/PVT/gnuradio_blocks/rtklib_pvt_gs.h

@@ -37,6 +37,10 @@
 #include <sys/types.h>            // for key_t
 #include <utility>                // for pair
 #include <vector>                 // for vector
+#if GNURADIO_USES_STD_POINTERS
+#else
+#include <boost/shared_ptr.hpp>
+#endif
 
 class Beidou_Dnav_Almanac;
 class Beidou_Dnav_Ephemeris;
@@ -55,7 +59,11 @@ class Rtcm_Printer;
 class Rtklib_Solver;
 class rtklib_pvt_gs;
 
+#if GNURADIO_USES_STD_POINTERS
 using rtklib_pvt_gs_sptr = std::shared_ptr<rtklib_pvt_gs>;
+#else
+using rtklib_pvt_gs_sptr = boost::shared_ptr<rtklib_pvt_gs>;
+#endif
 
 rtklib_pvt_gs_sptr rtklib_make_pvt_gs(uint32_t nchannels,
     const Pvt_Conf& conf_,