[CMake] Bug in find_file() command ?

[Glenn Coombs]

Once the driver project has converted to using cmake that is what I plan to
do - use find_path() to look for driver_root/CMakeLists.txt.  But in the
meantime I'm stuck using find_file() instead which works but it looks like
a bug that I need to specify the NO_DEFAULT_PATH option to avoid getting an
incorrect match.

--
Glenn


On 3 September 2012 09:58, Adolfo Rodríguez Tsouroukdissian <
adolfo.rodriguez at pal-robotics.com> wrote:

>
>
> On Tue, Aug 28, 2012 at 6:59 PM, Glenn Coombs <glenn.coombs at gmail.com>wrote:
>
>> I need to test for the presence of a directory called driver_root.  I
>> couldn't see a find_directory() command in the help
>
>
> I cannot comment about your issues concerning find_file, but if you know
> the name of a file contained in the directory you can use find_path:
>
> http://cmake.org/cmake/help/v2.8.8/cmake.html#command:find_path
>
> Cheers,
>
> Adolfo.
>
>
>> so I am using the following lines in my CMakeLists.txt:
>>
>>     message("1 DRV_ROOT_CHECK: ${DRV_ROOT_CHECK}")
>>     if (DEFINED ENV{DRV_ROOT})
>>         find_file(DRV_ROOT_CHECK driver_root $ENV{DRV_ROOT}/..)
>>     message("2 DRV_ROOT_CHECK: ${DRV_ROOT_CHECK}")
>>     endif()
>>
>>     message("3 DRV_ROOT_CHECK: ${DRV_ROOT_CHECK}")
>>     find_file(DRV_ROOT_CHECK driver_root
>>         ../CVSFILES
>>         ../..
>>         ../../CVSFILES
>>         ../../..
>>         ../../../CVSFILES
>>         ../../../..
>>     )
>>     message("4 DRV_ROOT_CHECK: ${DRV_ROOT_CHECK}")
>>
>>     set(DRV_ROOT       "${DRV_ROOT_CHECK}" CACHE PATH     "Location of
>> driver tree")
>>     set(DRV_ROOT_CHECK "${DRV_ROOT_CHECK}" CACHE INTERNAL "Location of
>> driver tree")
>>
>>     message("5 DRV_ROOT_CHECK: ${DRV_ROOT_CHECK}")
>>
>>     if (DRV_ROOT_CHECK)
>>         message("   DRV_ROOT: ${DRV_ROOT}")
>>     else()
>>         message(FATAL_ERROR "Unable to locate driver_root directory.
>> Please set DRV_ROOT variable.")
>>     endif()
>>
>> It works fine on my machine but fails on one of our build machines.  Both
>> machines are Windows 7 (64-bit) and are using CMake 2.8.9.  On my machine
>> it produces this output:
>>
>> 1 DRV_ROOT_CHECK:
>> 3 DRV_ROOT_CHECK:
>> 4 DRV_ROOT_CHECK: C:/data/perforceCheckouts/sim/vxe/CVSFILES/driver_root
>> 5 DRV_ROOT_CHECK: C:/data/perforceCheckouts/sim/vxe/CVSFILES/driver_root
>>    DRV_ROOT: C:/data/perforceCheckouts/sim/vxe/CVSFILES/driver_root
>>
>> but on the build machine it produces this output:
>>
>> 1 DRV_ROOT_CHECK:
>> 3 DRV_ROOT_CHECK:
>> 4 DRV_ROOT_CHECK: C:/Windows/System32/driver_root
>> 5 DRV_ROOT_CHECK: C:/Windows/System32/driver_root
>>
>> There is no file or directory called driver_root in the windows/systsem32
>> folder.  If I change the find_file() command to this:
>>
>> find_file(DRV_ROOT_CHECK driver_root PATHS
>>         ../CVSFILES
>>         ../..
>>         ../../CVSFILES
>>         ../../..
>>         ../../../CVSFILES
>>         ../../../..
>>         NO_DEFAULT_PATH
>>     )
>>
>> then it works producing this output:
>>
>> 1 DRV_ROOT_CHECK:
>> 3 DRV_ROOT_CHECK:
>> 4 DRV_ROOT_CHECK: C:/glenn/CVSFILES/driver_root
>> 5 DRV_ROOT_CHECK: C:/glenn/CVSFILES/driver_root
>>
>> Is this a bug in cmake or can somebody explain how it found a
>> non-existant file/folder in the windows/system32 folder ?
>>
>> --
>> Glenn
>>
>>
>> --
>>
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>
>
>
> --
> Adolfo Rodríguez Tsouroukdissian
> Robotics engineer
> adolfo.rodriguez at pal-robotics.com
> http://www.pal-robotics.com
>
> PAL ROBOTICS S.L
> c/ Pujades 77-79, 4º4ª
> 08005 Barcelona, Spain.
> Tel. +34.93.414.53.47
> Fax.+34.93.209.11.09
>
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