Need a way to provide system defines and system includes when compiler querying is disabled (with compilerPath of "").

It's possible to disable compiler querying (and disable fallback to a different compiler on failure) by specifying a compilerPath of "". This also works in combination with a custom configuration provider or compile_commands.json, to prevent use of the compiler they indicate (in case it's not cl.exe, gcc, or a gcc variant we can query). However, the defines and includes from c_cpp_properties.json are not currently getting merged into the configuration in those cases. Since no compiler will be queried, it seems necessary to support a way for the user to provide the missing system includes and systems defines.

This issue tracks merging in the includes and defines from c_cpp_properties.json when a compilerPath of "" is used in combination with a custom configuration provider or compile_commands.json.

Verfolge, wie c_cpp_properties.json zusammengeführt wird, wenn compilerPath leer ist und ein benutzerdefinierter Konfigurationsanbieter oder compile_commands.json die Konfiguration bereitstellt. Überprüfe das Verhalten mit Konfigurationen, bei denen die Compilerabfrage deaktiviert ist, und stelle anschließend sicher, dass die vom Benutzer bereitgestellten System-Include-Pfade und Defines vorhanden sind, ohne einen Compiler abzufragen.