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From: "fxcoudert at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/79724] GNAT tools do not respect --program-suffix and
 --program-prefix
Date: Thu, 23 Dec 2021 10:18:48 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D79724

--- Comment #2 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> =
---
It's puzzling, because although I've never read any Ada code, I can see the=
re
is some logic in place that should deal with it. In make.adb there is:

   Gcc      : String_Access :=3D Program_Name ("gcc", "gnatmake");
   Gnatbind : String_Access :=3D Program_Name ("gnatbind", "gnatmake");
   Gnatlink : String_Access :=3D Program_Name ("gnatlink", "gnatmake");

and in osint.adb the function Program_Name has some logic to find prefix and
suffix:

      --  Find the target prefix if any, for the cross compilation case.
      --  For instance in "powerpc-elf-gcc" the target prefix is
      --  "powerpc-elf-"
      --  Ditto for suffix, e.g. in "gcc-4.1", the suffix is "-4.1"

and it uses them to return the program that is going to be used:

      --  Create the new program name

      return new String'
        (Name_Buffer (Start_Of_Prefix .. End_Of_Prefix)
         & Nam
         & Name_Buffer (Start_Of_Suffix .. Name_Len));

I tried to debug this by sticking some Ada.Text_IO.Put_Line calls, but eith=
er
I'm doing it wrong, or it's never actually called.=