[CMake] problem with cmake script.

[Adolfo Rodríguez]

I was also fooled by that sentence some time ago, but careful reading of
what the doc says after "If NO_DEFAULT_PATH is not specified, the search
process is as follows:" suggests something different.

What I currently do to solve the issue of nonstandard package locations is
to use an environment variable called Foo_ROOT_DIR (for package Foo), as
suggested here<http://www.cmake.org/Wiki/CMake:Improving_Find*_Modules#Packages_in_unusual_locations>.
If you're interested, I could send you a FindOpenCV.cmake script that works
like this.

Cheers,

Adolfo

On Mon, Mar 9, 2009 at 11:19 AM, Benoit RAT (Gmail) <benoit.rat at gmail.com>wrote:

> Thanks Adolfo... but it's kind of strange behavior ....
> I thought that i will first look in my specific path and then in the
> default path as it say in the doc:
>
> *The default search order is designed to be most-specific to
>> least-specific for common use cases.
>> *
>
>
>
>
>
>
>
>
> --
> Benoit RAT
> www.neub.co.nr
>
>
> On Mon, Mar 9, 2009 at 10:57 AM, Adolfo Rodríguez <dofo79 at gmail.com>wrote:
>
>> Hi Benoit,
>>
>> The documentation of find_path<http://www.cmake.org/cmake/help/cmake2.6docs.html#command:find_path>specifies the order in which paths are searched. If you want to force the
>> /opt path to be searched first, you should maybe try
>>
>> find_path(<VAR> NAMES name PATHS ${NONSTANDARD_PATHS} NO_DEFAULT_PATH)
>> find_path(<VAR> NAMES name)
>>
>> This part is documented at the very end of the find_path doc.
>>
>>
>> On Mon, Mar 9, 2009 at 10:40 AM, Benoit <benpaka.spam at gmail.com> wrote:
>>
>>>  Hello,
>>>
>>> I'm having some trouble to use a cmake script correctly and i don't know
>>> why.
>>> The cmake script come from the openCV library (you can find it here:
>>> http://opencv.willowgarage.com/wiki/Getting_started?action=AttachFile&do=get&target=FindOpenCV.cmake)
>>> and it search for include and library files.
>>>
>>> In this script you can setup the path where you want to look for these
>>> files, (or let the script search the default path).
>>> The problem is that if i have to version of openCV (one in the default
>>> path and one in a special path), it alway select me the default path.
>>>
>>> Here you have the important part of the script:
>>>
>>> -----------------------------------------------------
>>>
>>> MESSAGE(STATUS "OpenCV_POSSIBLE_ROOT_DIRS=${OpenCV_POSSIBLE_ROOT_DIRS}")
>>>
>>> FIND_PATH(OpenCV_ROOT_DIR
>>>   NAMES
>>>   cv/include/cv.h     # windows
>>>   include/opencv/cv.h # linux /opt/net
>>>   include/cv/cv.h
>>>   include/cv.h
>>>   PATHS ${OpenCV_POSSIBLE_ROOT_DIRS})
>>>
>>> MESSAGE(STATUS "Selected OpenCV_ROOT_DIR=${OpenCV_ROOT_DIR}")
>>>
>>> SET(OpenCV_INCDIR_SUFFIXES
>>>   include
>>>   include/cv
>>>   include/opencv
>>>   cv/include
>>>   cxcore/include
>>>   cvaux/include
>>>   otherlibs/cvcam/include
>>>   otherlibs/highgui
>>>   otherlibs/highgui/include
>>>   otherlibs/_graphics/include
>>>   )
>>>
>>>
>>> MESSAGE(STATUS "OpenCV_HIGHGUI_INCLUDE_DIR=${OpenCV_HIGHGUI_INCLUDE_DIR}
>>> ; root=${OpenCV_ROOT_DIR}")
>>>
>>> FIND_PATH(OpenCV_HIGHGUI_INCLUDE_DIR
>>>   NAMES highgui.h
>>>   PATHS ${OpenCV_ROOT_DIR}
>>>   PATH_SUFFIXES ${OpenCV_INCDIR_SUFFIXES} )
>>>
>>>  MESSAGE(STATUS "OpenCV_HIGHGUI_INCLUDE_DIR=${OpenCV_HIGHGUI_INCLUDE_DIR}
>>> ${OpenCV_ROOT_DIR}")
>>>
>>> -----------------------------------------------------
>>>
>>>
>>> And here you have the first execution of cmake script when the cache
>>> empty.
>>>
>>> OpenCV_POSSIBLE_ROOT_DIRS=/opt/opencv/1.1.0;usr/local;/usr;
>>>
>>> Selected OpenCV_ROOT_DIR=/opt/opencv/1.1.0
>>>
>>> OpenCV_HIGHGUI_INCLUDE_DIR= ; root=/opt/opencv/1.1.0
>>>
>>> OpenCV_HIGHGUI_INCLUDE_DIR=/usr/include/opencv ; root=/opt/opencv/1.1.0
>>>
>>>
>>>
>>>
>>> -----------------------------------------------------
>>>
>>> Does anyone know why the result of
>>> OpenCV_HIGHGUI_INCLUDE_DIR=/usr/include/opencv and not
>>> /opt/opencv/1.1.0/include/opencv
>>> even if both files /opt/opencv/1.1.0/include/opencv/highgui.h
>>> and/usr/include/opencv/highgui.h  exist in my path.
>>>
>>>
>>>
>>> --
>>> Benoit RAT
>>> www.neub.co.nr
>>>
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>>
>>
>>
>> --
>> Adolfo Rodríguez Tsouroukdissian
>>
>> Robotics engineer
>> PAL ROBOTICS S.L
>> http://www.pal-robotics.com
>> Tel. +34.93.414.53.47
>> Fax.+34.93.209.11.09
>>
>
>


-- 
Adolfo Rodríguez Tsouroukdissian

Robotics engineer
PAL ROBOTICS S.L
http://www.pal-robotics.com
Tel. +34.93.414.53.47
Fax.+34.93.209.11.09
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