Upgrade: allow for build on »Trixie« with GCC-14

* need to upgrade our custom packages to current standards
 * switch those packages from CDBS to dh
 * re-build on Trixie and upgrade the Lumiera DEB-Depot

After these (in detail quite expensive) preparations,
build with Scons and GCC-14 can be started.

Fix some further (basically trivial) compile problems,
uncovered by the improved type checking of modern compilers.

Note: a tremendous amount of warnings (and depreciations) is
also indicated, which will be addressed later....

src/lib/hetero-data.hpp

@@ -305,14 +305,15 @@ namespace lib {
   class HeteroData
     : public HeteroData<meta::Node<StorageFrame<0, DATA...>, meta::NullType>>
     {
-      using _Front = HeteroData<meta::Node<StorageFrame<0, DATA...>, meta::NullType>>;
+      using _FrontBlock = HeteroData<meta::Node<StorageFrame<0, DATA...>, meta::NullType>>;
       
     public:
-      using NewFrame = typename _Front::Frame;
-      using ChainType = _Front;
+      using NewFrame = typename _FrontBlock::Frame;
+      using ChainType = _FrontBlock;
+      using _FrontBlock::_FrontBlock;
       
       template<typename...INIT>
-      static _Front
+      static HeteroData
       build (INIT&& ...initArgs)
         {
           return {initArgs ...};

src/lib/iter-adapter.hpp

@@ -108,6 +108,7 @@
 #include "lib/meta/value-type-binding.hpp"
 
 #include <iterator>
+#include <limits>
 
 
 namespace util {   // see lib/util.hpp

src/stage/timeline/body-canvas-widget.hpp

@@ -154,6 +154,9 @@ namespace timeline {
       auto get_vadjustment()  { return contentArea_.get_vadjustment(); }
       auto get_hadjustment()  { return contentArea_.get_hadjustment(); }
       
+      /** a way to get and possibly (re)compute the current TrackProfile */
+      using ProfileGetter = std::function<TrackProfile&()>;
+      
       
     protected: /* ==== Interface: CanvasHook ===== */
       
@@ -169,9 +172,6 @@ namespace timeline {
       void completeLayout (DisplayEvaluation&)         override;
       
     private:/* ===== Internals ===== */
-      
-      /** a way to get and possibly (re)compute the current TrackProfile */
-      using ProfileGetter = std::function<TrackProfile&()>;
       ProfileGetter getProfile;
       
       TimelineCanvas& getCanvas(int yPos);

src/tool/alsa.c

@@ -19,6 +19,7 @@
 
 #include "alsa.h"
 
+#include <err.h>
 #include <alsa/asoundlib.h>
 
 static snd_pcm_t* playback_handle = 0;

tests/library/iter-zip-test.cpp

@@ -160,10 +160,11 @@ namespace test{
           CHECK (t1   == "«tuple<uint, double, char>»──(42,1.61803,7)"_expect );   // ...while the other one was picked by value => t1 unchanged
           
           // function may return references....
-          auto refr = [](auto&& v) -> decltype(auto) { return v; };
-          int five = 5;
+          auto refr = [](auto& v) -> decltype(auto) { return v; };
+          int five{5};
+          int& fiveR{five};
           CHECK (TYPE (refr(five)) == "int&"_expect);
-          CHECK (TYPE (refr(5   )) == "int&"_expect);
+          CHECK (TYPE (refr(fiveR)) == "int&"_expect);
           
           auto t2r = mapEach (t2, refr);
           CHECK (t2r == "«tuple<char&, char&>»──(6,6)"_expect );                   // function yields references, which are placed into res-tuple