Re: unknown error mesage

[ldries46 <bertus.dries@planet.nl>]

Op 17-3-2021 om 14:17 schreef ldries46:
> Op 17-3-2021 om 13:06 schreef Simon Wright:
>> ldries46 <bertus.dries@planet.nl> writes:
>>
>>> Op 16-3-2021 om 19:21 schreef John McCabe:
>>>> On Tue, 16 Mar 2021 18:49:21 +0100, ldries46 <bertus.dries@planet.nl>
>>>> wrote:
>>>>
>>>>> fatal error: file gtk.ali is incorrectly formatted
>>>>> make sure you are using consistent versions of gcc/gnatbind
>>>>> I have already deleted all .ali files in the build directory, deleted
>>>>> the Datum.exe file, reinstalled GtkAda en even reinstalled GNAT 
>>>>> Studio
>>>>> Community version 2020.
>>>>>
>>>>> Who can tell me what is message means and how to eliminate that
>>>> I presume you've read this question with a similar issue?
>>>>
>>>> https://stackoverflow.com/questions/7576994/ada-strange-error-consistent-version-of-gcc-gnatbind 
>>>>
>>>>
>>>> The suggestion from that would appear to be that your gtk may have
>>>> been built with a different version of GNAT, hence you might need to
>>>> recompile the GtkAda library with whatever version of GNAT you've now
>>>> got.
>>>>
>>>> However, did you download the GtkAda version matching the GNAT
>>>> Community version from here - https://www.adacore.com/download/more?
>>> Yesterday I downloaded and installed GtkAda and GNAT Studio again from
>>> the site you mentioned the error did not disappear.
>>> In the mean time I tried to rebuild another project and it created a
>>> simular problem but with glib.ali
>>> I read the stack overflow item but I think that is not the problem.
>>> For reasons of tracebility I did not build GtkAda in the original
>>> directory but in C:/GNAT/GtkAda.
>>> The last uodate of the OS was only a few days ago but after that it
>>> still worhed
>> The complaint about mismatched versions is almost certainly derived from
>> the version info in the first line of an ALI file.
>>
>> Here I see (from a collection of old StackOverflow-related
>> investigations)
>>
>> First line              Compiler
>> -----------------       ------------
>> V "GNAT Lib v10"        FSF GCC 10
>> V "GNAT Lib v11"        FSF GCC 11
>> V "GNAT Lib v2019"      GNAT CE 2019
>> V "GNAT Lib v2020"      GNAT CE 2020
>> V "GNAT Lib v7"         FSF GCC 7
>> V "GNAT Lib v8"         FSF GCC 8
>> V "GNAT Lib v9"         FSF GCC 9
>>
>> Using a wrong ADA_PROJECT_PATH/GPR_PROJECT_PATH can lead to this. Using
>> gprbuild -v can help.
>>
>> Also,
>>
>> * Compile unit U with A.gpr which puts the ALI in directory A_OBJ
>> * Move unit U into the source tree for B.gpr which put the ALI in
>>    directory B_OBJ
>> * Run gprclean on A.gpr, which doesn't delete U.ali because U is no 
>> logner
>>    one of its sources
>> * Change compiler!
> This are the values:
> GPR_PROJECT_PATH=C:\GNAT\GtkADA\lib\gnat;D:\ada\project\template-parser
> ADA_PROJECT_PATH=C:\GNAT\GtkADA\lib\gnat;.....
> I think The Path és are the same, I am using GNAT  Studio Community 
> version 2020 and all Gtk.ali are GNAT Lib v2020
> gprbuild -v did not change anything. Changing the compiler is the 
> worst thing I can do because I cannot find any straight forward method 
> os installing like the mthod from Adacore
I finally found the problem I believe
Datum.ali build by V "GNAT Lib v9"        GPS Community version 2020
gtk.ali nuild by        V "GNAT Lib v2020" AdaCore Download

Both are dowmloaded feom the same page of AdaCore.
What is the best way to solve this?