Upgrade: compile fixes for GCC-12

src/lib/split-splice.hpp

@@ -76,6 +76,7 @@
 #include "lib/time/timevalue.hpp"
 #include "lib/nocopy.hpp"
 
+#include <optional>
 #include <array>
 
 

src/steam/control/command-setup.hpp

@@ -133,7 +133,7 @@ namespace control {
    * and immediately be assigned by a lambda, whose body is what follows the macro invocation
    */
   #define COMMAND_DEFINITION(_NAME_) \
-    CommandSetup _NAME_ = CommandSetup{STRINGIFY(_NAME_)}  = [&](CommandDef& def)
+    CommandSetup _NAME_ = CommandSetup{STRINGIFY(_NAME_)}  = [](CommandDef& def)
   
   
   

tests/library/split-splice-test.cpp

@@ -38,6 +38,7 @@
 #include "lib/nocopy.hpp"
 #include "lib/util.hpp"
 
+#include <optional>
 #include <utility>
 #include <string>
 #include <list>