[CMake] Separate compiler and linker pdb

[Yuri Timenkov]

I had problems overwriting pdbs when tried to make single pch for
several similar projects (targets).

I think it could be possible to work-around this issue while
preserving current behavior (using policies or extra flags).

On Fri, Jun 22, 2012 at 2:03 PM, Michele Santullo
<michele.santullo at larian.com> wrote:
> Hello, thanks for your reply. I saw that page already, and I understand
> cmake needs to work around other people's mistakes, so the fix is not an
> easy one.
> My doubt is not about setting a specific path, but about the pdbs ending up
> in the same spot. Is there any known problem with the pdbs overwriting each
> other? Or is that safe? Couldn't you just call them *.compiler.pdb and
> *.linker.pdb as a temporary fix, and leave to the user the burden of picking
> up the relevant ones?
>
> Michele
>
>
> On 21/06/2012 19:10, Yuri Timenkov wrote:
>>
>> This is a limitation of CMake. There is a discussion at
>> http://public.kitware.com/Bug/view.php?id=11899
>>
>> On Tue, Jun 19, 2012 at 7:57 PM, Michele Santullo
>> <michele.santullo at larian.com>  wrote:
>>>
>>> Hello, we recently converted our project to cmake but for some reason, as
>>> we
>>> generate for VS 2008 on Windows, we get the same path for both the
>>> compiler
>>> and the linker generated pdb files.
>>>
>>> The path is something like ..../bin/Debug/Project.pdb for both, so they
>>> overwrite each other causing various errors. If I pass the /Fd switch to
>>> the
>>> compiler, cmake just keeps the old path and appends the new one to the
>>> command line parameters, confusing the VS IDE and causing a full rebuild
>>> every time we build.
>>>
>>> Is there a solution to produce two different files?
>>> Could it be caused by some error in my cmake files? The only settings
>>> about
>>> paths I can think of are:
>>>
>>> set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/../bin )
>>> set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/../lib )
>>>
>>> if(MSVC)
>>>        set(PDB_SEARCH_PATHS "/PDBPATH")
>>>        SET(LNK_FLAGS_DEBUG "${LNK_FLAGS_DEBUG} ${PDB_SEARCH_PATHS}")
>>>        SET(LNK_FLAGS_RELEASE "${LNK_FLAGS_RELEASE} ${PDB_SEARCH_PATHS}")
>>>        SET(LNK_FLAGS_SHIPPING "${LNK_FLAGS_SHIPPING}
>>> ${PDB_SEARCH_PATHS}")
>>> endif(MSVC)
>>>
>>> Thanks,
>>> Michele
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>
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