Re: How to exit an Ada program with (unix shell) error code?

[Georg Bauhaus <rm.dash-bauhaus@futureapps.de>]

Rob Norris schrieb:
> On Mon, 04 May 2009 16:09:01 GMT, anon@anon.org (anon) wrote:
> 
>> --
>> --  Besides the Ada.Command_Line you can just use functions for 
>> --  the instead of procedures for your nain program. This design is 
>> --  great for application where Command_Line is not used.
>> --
>>
>> function work return Integer is
>>
>>  begin
>>    return ( 0 ) ; -- no error status code
>>  end work ;
>>
>>
>>
>> In <49ba30c9-a1e6-4346-8618-d256f87ac301@s31g2000vbp.googlegroups.com>, reinkor <reinkor@gmail.com> writes:
>>> I want to use Ada programs within unix/linux makefiles and shell
>>> scripts.
>>> Then these programs must sometimes exit with an exit code (error
>>> status)
>>> so execution of the Makefile/scripts halts.
>>>
>>> How I do this ?
>>>
>>> reinert
> 
> Further to anon's reply, when your main program is a function, you can obviously return various
> other values. I think in UNIX world anything other than 0 means an error, but one can encode
> different error states of your own choosing eg:

When choosing an OS specific return code mechanism
also be sure to choose the proper return type for OS's
return code values.