I changed the compiler I use from 2021 to 2025. There are several problems: the start of my project looks below where the resrved words are bold.
project sudoku is
for Main use (“Sudoku.adb”);
As you can see the word “project”is not recognised as a reserved word on the line with “project” the characters p of the “project”and the s of the second word are shaded shaded rose.just before the line there is a red triangle, top up trying to translate the program a red failure message “2025-08-30 14:25:00] Could not locate executable on path: gprbuild” is shown in Messages and in Locations:
Diagnostics: libadalang (2 items in 1 file)
27-1: skipped token Project
27-9: skipped token Sudoku
Diagnostics: ada.sourceInformation (1 item in 1 file)
Sudoku.gpr (1 item)
1-1 This file does not belong to the loaded program tree; some features may be imprecise(e.g.: Find all References) or not available(e.g.: Rename)
The first line is “-” The whole line is that character. In my old compiler This fault did not appear, Is there another reason as the fact that may be “gnatstudio-26.0w-20250417-x86_64-windows64-bin.exe“ misses gprbuild. If so where should that come from and how must it be installed, most descriptions look like a terrible “mumbo jumbo”