GCC 12.2 portability issues

PiPedalCommon/src/AlsaSequencer.cpp

@@ -81,8 +81,11 @@ namespace pipedal
                 port.canReadSubscribe = capability & SND_SEQ_PORT_CAP_SUBS_READ;
                 port.canWriteSubscribe = capability & SND_SEQ_PORT_CAP_SUBS_WRITE;
                 auto typeBits = snd_seq_port_info_get_type(port_info);
-
+#ifdef SND_SEQ_PORT_TYPE_MIDI_UMP
                 port.isUmp = (typeBits & SND_SEQ_PORT_TYPE_MIDI_UMP) != 0;
+#else 
+                port.isUmp = false; // UMP support is not available in all versions of ALSA
+#endif
                 port.isSystemAnnounce = (typeBits & SND_SEQ_PORT_SYSTEM_ANNOUNCE) != 0;
                 port.isMidiSynth = (typeBits & SND_SEQ_PORT_TYPE_MIDI_GENERIC) != 0 ||
                                    (typeBits & SND_SEQ_PORT_TYPE_MIDI_GM) != 0 ||

PiPedalCommon/src/HtmlHelper.cpp

@@ -44,9 +44,9 @@ std::string HtmlHelper::timeToHttpDate(std::filesystem::file_time_type time)
 {
 
     // Convert to time_t.
-    std::chrono::system_clock::time_point system_time = std::chrono::clock_cast<std::chrono::system_clock>(time);
+    auto sctp = std::chrono::time_point_cast<std::chrono::system_clock::duration>(time - std::filesystem::file_time_type::clock::now() + std::chrono::system_clock::now());
 
-    auto time_t_value = std::chrono::system_clock::to_time_t(system_time);
+    auto time_t_value = std::chrono::system_clock::to_time_t(sctp);
     return timeToHttpDate(time_t_value);
 }
 

PiPedalCommon/src/include/json.hpp

@@ -35,6 +35,8 @@
 #include <string_view>
 #include <string.h>
 #include <stdexcept>
+#include <vector>
+#include <memory>
 
 #define DECLARE_JSON_MAP(CLASSNAME) \
     static pipedal::json_map::storage_type<CLASSNAME> jmap

PiPedalCommon/src/include/json_variant.hpp

@@ -30,6 +30,7 @@
 #include <string>
 #include <stdexcept>
 #include <utility>
+#include <memory>
 #include "json.hpp"
 
 namespace pipedal