gcc | This directory contains the GNU Compiler Collection | Compiler library

The short answer is, you can't. Automatic variables, as made clear in the documentation, are only set inside the recipe of a rule, not when expanding the prerequisites. There are advanced features you can take advantage of to work around this, but they are intended only to be used in very complicated situations which this isn't, really.

What you want to do is exactly what pattern rules were created to support:

Within the function you need to find each element in the passed array. However the type of the array is unknown. You only know the size of each element of the array and the starting address of the array that is passed through the parameter base0. of the type const void *..

To access an element of the array you need to use the pointer arithmetic. But the type void is incomplete type. Its size is unknown/ So you may not use the pointer of the type (const) void *` in expressions with the pointer arithmetic.

Thus this declaration

For starters the compiler should issue a message for this code snippet

In ranges-v3, there is iterator_range which you can use to wrap the iterators into a range object.

In C++20, you can use std::span to wrap those iterators into an range object

Here is the solution I found :

Changin xvimagesink by ximagesink :

sink = gst_element_factory_make ("xvimagesink", NULL); g_assert(sink);

becomes

sink = gst_element_factory_make ("ximagesink", NULL); g_assert(sink);

Hope it will help some of you facing the same problem.

The value type of your unordered_map is std::variant, but in your brace init list, you're passing float instead of a double. This conversion from float to a variant is not allowed.

Either change your value type to std::variant, or pass literals of float type, e.g. 1.5f instead of 1.5.

The minimized issue in code is

It simply means that the iot_thread ask stack size is not sufficient. [...] Is this the only reason why this error comes or can there be another reason for this?

Either it is insufficient you your stack usage is excessive (due to recursion error or instantiation of instantiation of large objects or arrays. Either way the cause is the same. Whether it is due insufficient stack or excessive stack usage is a matter of design an intent.

If yes then where should I increase the stack size of the iot_thread task?

The stack for a thread is assigned in the task creation function. For a dynamically allocated stack that would be the xTaskCreate() call usStackDepth parameter:

A simple way to fix this would be to deduce the non-type template parameter for the function, and reorder the template parameter list

The command you want to build, will have to be built using a task. Once built in a task, you can then bind it to which ever key configuration you like. Before I answered this I built a simple example to help demonstrate what I just said.

Create a tasks.json file in the .vscode directory. You can use this command from your projects root:

Tasks are like creating complicated keybinding (well sort'a), its more like a complex keybinding that took steroids, and can do a bunch of stuff keybindings cannot do. All BS aside, it is an extremely powerful tool. VSCode users that are not using it, are missing out on one of the most powerful features that VSCode offers. Anyhow, this is how you create a task that, in-a-nutshell, defines and executes a shell command.