Use lambda instead of boost::build when genenic lambdas are available in the compiler

src/utils/front-end-cal/CMakeLists.txt

@@ -76,6 +76,14 @@ target_compile_definitions(front-end-cal
     PUBLIC -DGNSSSDR_INSTALL_DIR="${CMAKE_INSTALL_PREFIX}"
 )
 
+set(has_generic_lambdas HAS_GENERIC_LAMBDA=1)
+set(no_has_generic_lambdas HAS_GENERIC_LAMBDA=0)
+target_compile_definitions(front-end-cal
+    PRIVATE
+        "$<$<COMPILE_FEATURES:cxx_generic_lambdas>:${has_generic_lambdas}>"
+        "$<$<NOT:$<COMPILE_FEATURES:cxx_generic_lambdas>>:${no_has_generic_lambdas}>"
+)
+
 if(ENABLE_CLANG_TIDY)
     if(CLANG_TIDY_EXE)
         set_target_properties(front-end-cal

src/utils/front-end-cal/main.cc

@@ -38,7 +38,6 @@
 #include "gps_l1_ca_pcps_acquisition_fine_doppler.h"
 #include "gps_utc_model.h"
 #include <boost/any.hpp>  // for bad_any_cast
-#include <boost/bind.hpp>
 #include <boost/exception/exception.hpp>
 #include <boost/lexical_cast.hpp>
 #include <gflags/gflags.h>
@@ -70,6 +69,11 @@
 #include <utility>
 #include <vector>
 
+#if HAS_GENERIC_LAMBDA
+#else
+#include <boost/bind.hpp>
+#endif
+
 #if HAS_STD_FILESYSTEM
 #include <filesystem>
 namespace fs = std::filesystem;
@@ -142,7 +146,12 @@ void FrontEndCal_msg_rx::msg_handler_events(const pmt::pmt_t& msg)
 FrontEndCal_msg_rx::FrontEndCal_msg_rx() : gr::block("FrontEndCal_msg_rx", gr::io_signature::make(0, 0, 0), gr::io_signature::make(0, 0, 0))
 {
     this->message_port_register_in(pmt::mp("events"));
-    this->set_msg_handler(pmt::mp("events"), boost::bind(&FrontEndCal_msg_rx::msg_handler_events, this, _1));
+    this->set_msg_handler(pmt::mp("events"),
+#if HAS_GENERIC_LAMBDA
+        [this](auto&& PH1) { msg_handler_events(PH1); });
+#else
+        boost::bind(&FrontEndCal_msg_rx::msg_handler_events, this, _1));
+#endif
     rx_message = 0;
 }