[M3devel] HEADS UP: cm3.cfg locations, was: Re: problems with cm3.cfg and MxConfig

Mon Aug 3 15:57:19 CEST 2009

I don't think we did agree that config files reside other than in the  
cm3 hierarchy.

On 3 Aug 2009, at 06:30, Olaf Wagner wrote:

> It was a specific request from the people building platform specific
> installation packages that config files reside and are found in the
> `usual' locations on their system and not somewhere beneath cm3.
>
> Place don't change that unless there is no objection from anyone
> on m3devel.
>
> Olaf
>
> Quoting Jay K <jay.krell at cornell.edu>:
>
>> Sorry about #1 Randy, my mistake.
>>
>>
>> Sitting in the bin directory...seems a little wierd, eh?
>> What source are you going to build sitting there?
>> I guess um some custom quake code??
>> Good enough if empty is instead just "."?
>>
>> This falls out of the fact that cm3 actually probes all over the   
>> place for the cm3.cfg file and the first place it looks in is the   
>> current directory.
>>
>>
>> Another good option I think would be just to remove that probe.
>> It looks in way too many places.
>>
>>
>> Here is the current code. I think it is gross.
>> Too much probing make things quite ambiguous.
>>
>>
>> PROCEDURE FindConfig () =
>>  (* LL = mu *)
>>  VAR txt: TEXT;
>>  BEGIN
>>    IF (found) THEN RETURN END;
>>
>>    (* try the current directory *)
>>    IF TryConfig (Filename) THEN RETURN END;
>>
>>    (* try the immediate source directory *)
>>    IF TryConfig ("src", Filename) THEN RETURN END;
>>
>>    (* try the sibling source directory *)
>>    IF TryConfig ("..", "src", Filename) THEN RETURN END;
>>
>>    (* try the M3CONFIG environment variable *)
>>    txt := QMachine.GetEnv (NIL, "M3CONFIG");
>>    IF (txt # NIL) THEN
>>      IF TryConfig (txt) THEN RETURN END;
>>      IF TryConfig (txt, Filename) THEN RETURN END;
>>    END;
>>
>>    (* try the directory containing the current executable *)
>>    txt := Pathname.Prefix (Params.Get (0));
>>
>>    IF Text.Length (txt)> 0 THEN
>>      IF TryConfig (txt, Filename) THEN RETURN END;
>>    END;
>>
>>    (* try the directories named by the PATH environment variable. *)
>>    txt := Env.Get ("PATH");
>>    FindConfigInPath (txt);
>>
>>    IF found THEN RETURN END;
>>
>>    (* try the etc directories *)
>>    IF TryConfig("/usr/local/cm3/etc", Filename) THEN RETURN END;
>>    IF TryConfig("/usr/cm3/etc", Filename) THEN RETURN END;
>>    IF TryConfig("/cm3/etc", Filename) THEN RETURN END;
>>    IF TryConfig("/usr/contrib/etc", Filename) THEN RETURN END;
>>    IF TryConfig("/usr/local/etc", Filename) THEN RETURN END;
>>    IF TryConfig("/usr/etc", Filename) THEN RETURN END;
>>    IF TryConfig("/opt/etc", Filename) THEN RETURN END;
>>    IF TryConfig("/sw/etc", Filename) THEN RETURN END;
>>    IF TryConfig("/etc", Filename) THEN RETURN END;
>>
>>    (* oh well, make sure we don't try this silly exercise again... *)
>>    config := NIL;
>>    found := TRUE;
>>  END FindConfig;
>>
>>
>> I propose..roughly roughly, we make it like this instead:
>>
>>
>> PROCEDURE FindConfig () =
>>  (* LL = mu *)
>>  VAR txt: TEXT;
>>  BEGIN
>>    IF (found) THEN RETURN END;
>>
>>    (* try the M3CONFIG environment variable *)
>>    txt := QMachine.GetEnv (NIL, "M3CONFIG");
>>    IF (txt # NIL) THEN
>>      IF TryConfig (txt) THEN RETURN END;
>>      IF TryConfig (txt, Filename) THEN RETURN END;
>>    END;
>>
>>    (* try the directory containing the current executable *)
>>    txt := Pathname.Prefix (Params.Get (0));
>>    IF Text.Length (txt)> 0 THEN
>>      IF TryConfig (txt, Filename) THEN RETURN END;
>>    END;
>>
>>    (* oh well, make sure we don't try this silly exercise again... *)
>>    config := NIL;
>>    found := TRUE;
>>  END FindConfig;
>>
>>
>> or, if people really like it looking all over the place, fixing  
>> the  case of it being in the current working directory is probably  
>> like  this:
>>
>>
>>    (* try the current directory *)
>> <    IF TryConfig (Filename) THEN RETURN END;
>>>   IF TryConfig (".", Filename) THEN RETURN END;
>>
>>
>> - Jay
>>
>>
>>
>> ----------------------------------------
>>> From: jay.krell at cornell.edu
>>> To: rcoleburn at scires.com
>>> Date: Sun, 2 Aug 2009 23:42:17 -0700
>>> CC: m3devel at elegosoft.com
>>> Subject: Re: [M3devel] problems with cm3.cfg and MxConfig
>>>
>>> Host, hm, I think probably my mistake. It is defined by cm3 but not
>>> all m3quake users. Path() should be the directory containing the  
>>> file
>>> with the call.
>>>
>>> - Jay (phone)
>>>
>>> On Aug 2, 2009, at 9:52 PM, "Randy Coleburn"
>>> wrote:
>>>
>>>> I have been working on the problem of cm3ide not getting the
>>>> BUILD_DIR from cm3.cfg. I've run across some perplexing test  
>>>> results.
>>>>
>>>> MxConfig.Get("BUILD_DIR") is returning NIL on Windows XP & Vista.
>>>> I've tracked it down a bit further. There seem to be two issues
>>>> that must be fixed to solve this problem:
>>>>
>>>> 1. HOST does not seem to be defined. In particular my "C:\cm3\bin
>>>> \cm3.cfg" file appears as follows (this is the file Jay  
>>>> recommended):
>>>> INSTALL_ROOT = path() & "/.."
>>>> include (path() & "/config/" & HOST)
>>>>
>>>> Is HOST a variable? Or, was I supposed to replace it by "NT386"?
>>>> If the latter, my bad on this one--I took Jay's message literally.
>>>>
>>>> 2. path() does not appear to always yield the path to the bin
>>>> folder. In particular, it seems to work fine unless you invoke the
>>>> program when the current directory is actually set to the bin
>>>> folder, in which case path() seems to return the empty string.
>>>>
>>>> So, if Í%=C:\, and I run cm3ide, path() returns "C:\cm3\bin" as  
>>>> it s
>>>> hould.
>>>> But, if Í%=C:\cm3\bin, and I run cm3ide, path() returns "".
>>>>
>>>> So in the latter case, the include statement winds up trying to  
>>>> pull
>>>> a file from the wrong place, e.g. "/config/NT386" rather than "C:
>>>> \cm3\bin/config/NT386"
>>>>
>>>> Regards,
>>>> Randy Coleburn
>
>
>
> -- 
> Olaf Wagner -- elego Software Solutions GmbH
>               Gustav-Meyer-Allee 25 / Gebäude 12, 13355 Berlin,  
> Germany
> phone: +49 30 23 45 86 96  mobile: +49 177 2345 869  fax: +49 30 23  
> 45 86 95
>   http://www.elegosoft.com | Geschäftsführer: Olaf Wagner | Sitz:  
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>

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