Add missing includes and link dependencies for GCC 16

GCC 16 on Arch Linux no longer implicitly includes certain standard
headers. This causes 'not declared' errors for POSIX functions.

- PiPedalCommon/src/CMakeLists.txt: Link asound library for ALSA sequencer
- DBusDispatcher.cpp: Add <unistd.h> for read()/write()/close()
- AuxInTest.cpp: Add <unistd.h> for sleep()
- kconfigMain.cpp: Add <unistd.h> for getuid()
- ModFileTypes.cpp: Add <mutex> for std::mutex/std::lock_guard

PiPedalCommon/src/CMakeLists.txt

@@ -97,7 +97,7 @@ add_library(PiPedalCommon STATIC
   ss.hpp
 )
 target_include_directories(PiPedalCommon PUBLIC "include" ${LIBNL3_INCLUDE_DIRS})
-target_link_libraries(PiPedalCommon PUBLIC ${LIBNL3_LIBRARIES} sdbus-c++-objlib
+target_link_libraries(PiPedalCommon PUBLIC ${LIBNL3_LIBRARIES} sdbus-c++-objlib asound
  )
 
 

PiPedalCommon/src/DBusDispatcher.cpp

@@ -3,6 +3,7 @@
 #include <sdbus-c++/IConnection.h>
 #include <poll.h>
 #include <sys/eventfd.h>
+#include <unistd.h>
 #include "ss.hpp"
 #include <chrono>
 #include <cassert>

src/AuxInTest.cpp

@@ -19,6 +19,7 @@
 
 
 #include "AuxIn.hpp"
+#include <unistd.h>
 using namespace pipedal;
 
 int main(int argc, char**argv) {

src/ModFileTypes.cpp

@@ -21,6 +21,7 @@
 #include "util.hpp"
 #include <stdexcept>
 #include <iostream>
+#include <mutex>
 #include "ss.hpp"
 #include "MimeTypes.hpp"
 

src/kconfigMain.cpp

@@ -55,6 +55,7 @@
 #include <atomic>
 #include "BootConfig.hpp"
 #include <array>
+#include <unistd.h>
 #include "CommandLineParser.hpp"
 #include "PrettyPrinter.hpp"
 #include "SysExec.hpp"