I don't know if we need one for every .exe and .dll -- but with the new MSVC build, we are getting one for every .exe and .dll.

The manifest is needed because to quote Microsoft:

Side-by-side assemblies are Win32 assemblies described by manifests and authored so that multiple versions may run at the same time without conflicting with each other. When developers author manifests and write applications to use side-by-side assembly sharing, multiple assembly versions can run on the system and each application can specify which assembly version it should use.

Translation: 'assemblies' are 'binaries,' 'side-by-side assemblies' means directories with GUIDs in directory names so that different directories can each contain their own version of the same library.

In other words, an embedded manifest does pretty much the same thing as an soname on a Posix system. The difference is that because the actual filenames for the different side by side assemblies are identical, each has to be in its own uniquely named directory. The manifest tells the OS which version comes from what directory.

Hope this helps,
Mike

-----Original Message-----
>From: victor 
>Sent: Feb 16, 2008 2:04 PM
>To: Michael Gogins , Developer discussions 
>Subject: Re: [Cs-dev] MSVC build for 5.08 installer progress report
>
>yes, that is strange, because both _csnd and _CsoundAC are also
>dynamic loaded by the executable (rather than linked).
>
>I am confused as to why the manifest is needed. Could you explain
>it a little more. Would we need one for  every DLL built with
>MSVC?
>
>Victor
>
>
>----- Original Message ----- 
>From: "Michael Gogins" 
>To: "Developer discussions" 
>Sent: Saturday, February 16, 2008 6:44 PM
>Subject: Re: [Cs-dev] MSVC build for 5.08 installer progress report
>
>
>> Because they are dynamically loaded, and the runtime libraries would 
>> already have been loaded by the host. Just guessing.
>>
>> Regards,
>> Mike
>>
>> -----Original Message-----
>>>From: victor 
>>>Sent: Feb 16, 2008 8:09 AM
>>>To: Developer discussions 
>>>Subject: Re: [Cs-dev] MSVC build for 5.08 installer progress report
>>>
>>>And another question, do the opcodes require the same
>>>type of thing? If not why, as they are DLL modules as well.
>>>
>>>Victor
>>>----- Original Message ----- 
>>>From: "victor" 
>>>To: "Developer discussions" 
>>>Sent: Saturday, February 16, 2008 1:06 PM
>>>Subject: Re: [Cs-dev] MSVC build for 5.08 installer progress report
>>>
>>>
>>>>I see, and gcc does that extra bit of linking itself, does it?
>>>>
>>>> Victor
>>>> ----- Original Message ----- 
>>>> From: "Michael Gogins" 
>>>> To: "Developer discussions" 
>>>> Sent: Saturday, February 16, 2008 12:59 PM
>>>> Subject: Re: [Cs-dev] MSVC build for 5.08 installer progress report
>>>>
>>>>
>>>>> The problem with Python modules failing to import was that the older
>>>>> SConstruct did not embed the manifest into the binaries. For that you
>>>>> need
>>>>> run mt, the manifest tool.
>>>>>
>>>>> The updated SConstruct does embed the manifests, and csnd and CsoundAC 
>>>>> do
>>>>> now import. The following lines do the trick (all build environments
>>>>> inherit
>>>>> from commonEnvironment):
>>>>>
>>>>> commonEnvironment['LINKCOM'] = [commonEnvironment['LINKCOM'],
>>>>> 'mt.exe -nologo -manifest 
>>>>> ${TARGET}.manifest -outputresource:$TARGET;1']
>>>>> commonEnvironment['SHLINKCOM'] = [commonEnvironment['SHLINKCOM'],
>>>>> 'mt.exe -nologo -manifest 
>>>>> ${TARGET}.manifest -outputresource:$TARGET;2']
>>>>>
>>>>> Regards,
>>>>> Mike
>>>>>
>>>>>
>>>>> ----- Original Message ----- 
>>>>> From: "victor" 
>>>>> To: "Developer discussions" 
>>>>> Sent: Saturday, February 16, 2008 5:23 AM
>>>>> Subject: Re: [Cs-dev] MSVC build for 5.08 installer progress report
>>>>>
>>>>>
>>>>>> What are/were the problems with the Python module (cnsd and/or
>>>>>> CsoundAC)?
>>>>>> ----- Original Message ----- 
>>>>>> From: "Michael Gogins" 
>>>>>> To: "Developer discussions" 
>>>>>> Sent: Saturday, February 16, 2008 4:03 AM
>>>>>> Subject: [Cs-dev] MSVC build for 5.08 installer progress report
>>>>>>
>>>>>>
>>>>>>> Basically, everything is going fairly fast now.
>>>>>>>
>>>>>>> Everything builds except the OSC opcodes and the Pure Data external. 
>>>>>>> I
>>>>>>> am
>>>>>>> confident that I will also be able to build both of these.
>>>>>>>
>>>>>>> Csound runs, makes sound, and is debuggable -- it is true it is much
>>>>>>> more
>>>>>>> easily debuggable than the MinGW build. csound5gui runs and makes
>>>>>>> sound.
>>>>>>> winsound runs.
>>>>>>>
>>>>>>> The Python interface runs.
>>>>>>>
>>>>>>> I now need to test the other stuff to see if it still works, and try
>>>>>>> debugging a Python module, and fix up the installer Python issue.
>>>>>>>
>>>>>>> There also will be a manifest/runtime library DLL issue, but I think 
>>>>>>> I
>>>>>>> can
>>>>>>> fix it this time by including the runtime DLLs in properly named
>>>>>>> directories
>>>>>>> in the installation tree.
>>>>>>>
>>>>>>> Regards,
>>>>>>> Mike
>>>>>>>
>>>>>>>
>>>>>>>
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