[CMake] Relinking with Ninja broken in 3.7.0

[Mika Fischer]

2016-11-16 18:21 GMT+01:00 Bill Hoffman <bill.hoffman at kitware.com>:

> On 11/16/2016 11:36 AM, Mika Fischer wrote:
>
>>
>> I get the following error even though I'm on Linux and thus an ELF-based
>> platform. This breaks all our builds...
>>
>> `The install of the <target> target requires changing an RPATH from
>> the build tree, but this is not supported with the Ninja generator unless
>> on an ELF-based platform.  The CMAKE_BUILD_WITH_INSTALL_RPATH variable may
>> be set to avoid this relinking step.`
>>
>> Looking at cmGeneratorTarget.cxx#L1214, I see that there's no switch for
>> ELF-based platforms, it just unconditionally throws a fatal error when
>> relinking is required and ninja is being used...
>>
>> Is the error message misleading and this should actually work on Linux?
>> Or is this not supposed to be working, and we should no longer use
>> ninja? If so, why?
>>
>> CMAKE_BUILD_WITH_INSTALL_RPATH is not a viable alternative for us...
>>
>> Did you start with a completely clean build tree?  Or did you maybe just
> remove the CMakeCache.txt file?


Ah yes, that was the problem. Thanks a lot and sorry for the noise!

Best,
 Mika
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