CGAL users discussion list

[mm <>]

Philipp Möller wrote:
> 
> On 22 August 2011 16:13, mm 
> <>
>  wrote:
>>
>> Laurent Rineau (GeometryFactory) wrote:
>>>
>>> On lundi 22 août 2011 14:11:36 mm wrote:
>>>> Amy Tabb wrote:
>>>> > My opinion of how to fix your problem is to keep the newest version
>>>> of
>>>> > boost (at least 1.44), and then skip the Synaptic package manager
>>>> version
>>>> > of cgal and instead build it from source.  In the cmake dialog, you
>>>> can
>>>> > manually point to the specific version of boost that you have, but
>>>> when
>>>> I
>>>> > have installed it on Ubuntu there was no need to alter the libraries
>>>> > found by cmake.
>>>> >
>>>> > Then you'll have the most up to date version of boost with the most
>>>> up
>>>> to
>>>> > date version of cgal, the only negative being some long download and
>>>> > build times.
>>>>
>>>> Joachim Reichel wrote:
>>>> > If you don't want to/can't do that yourself there seem to be two
>>>> options:
>>>> > 1) Build CGAL yourself from source, as recommended by Amy.
>>>> > 2) Use a newer CGAL package from Ubuntu oneiric or Debian squeeze
>>>> (CGAL
>>>> > 3.8 / Boost 1.46).
>>>>
>>>> Hey Amy and Joachim, thanks for answering that fast! My response comes
>>>> a
>>>> bit late, but I was afk all weekend long.
>>>>
>>>> What both of you said makes total sense and I'd like to follow Amy's
>>>> recommendation and compile CGAL from source and link against that.
>>>> Unfortunately, it's not working. Setup is like this:
>>>> 1) downloaded
>>>> https://gforge.inria.fr/frs/download.php/28501/CGAL-3.8.tar.xz 2)
>>>> unpacked
>>>> and called cmake: only option changed is:
>>>> CMAKE_INSTALL_PREFIX = /home/mm/.local/CGAL-3.8/
>>>> as that's the place I keep my selfcompiled software.
>>>> 3) open my project in cmake and set
>>>> CGAL_DIR = /home/mm/.local/CGAL-3.8/lib/CGAL
>>>> It's the only CGAL option and originally when I install CGAL through
>>>> Synaptic, the folder /usr/lib/CGAL contains the same files, mostly
>>>> *.cmake
>>>> or *.in files.
>>>> 4) compile my project and get error:
>>>> /home/mm/code/src/cv/reflectance/illumestimators/gamutmapping/gamutmapping2
>>>> destimator.cpp:14:64: fatal error:
>>>> CGAL/Exact_predicates_inexact_constructions_kernel.h: No such file or
>>>> directory
>>>> compilation terminated.
>>>
>>> Between steps 2 and 3, have you compiled CGAL libraries? Do you have a
>>> file
>>> /home/mm/.local/CGAL-3.8/lib/CGAL/CGALConfig.cmake? What is the value of
>>> variable CGAL_INCLUDE_DIRS in that file?
>>>
>>> The CMake lines about in your CMakeLists.txt seem correct.
>>>
>>
>> Oh, forgot that: yeah, I compiled CGAL between steps 2 and 3. :)
>> The file /home/mm/.local/CGAL-3.8/lib/CGAL/CGALConfig.cmake exists and
>> the
>> mentioned line looks like this:
>> set(CGAL_INCLUDE_DIRS  "/home/mm/.local/CGAL-3.8//include" )
>> So, this looks just fine and is the correct path.
>>
>> I'm kind of out of ideas... I compared the explicit compiler lines for
>> the
>> file that includes the CGAL things. Here the includes in the file
>> gamutmapping2destimator.cpp:
>> #include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
>> #include <CGAL/point_generators_2.h>
>> #include <CGAL/algorithm.h>
>> #include <CGAL/convex_hull_traits_2.h>
>> #include <CGAL/convex_hull_2.h>
>> #include <CGAL/Exact_predicates_exact_constructions_kernel.h>
>>
>> and here the compiler line:
>> [ 72%] Building CXX object
>> illumestimators/CMakeFiles/illumestimators-lib.dir/gamutmapping/gamutmapping2destimator.cpp.o
>> cd /home/mm/code/build/cv/vole/illumestimators && /usr/bin/c++
>> -DOPENCV_VERSION=2.2.0 -DWITH_OPENCV2 -DWITH_OPENCV -DWITH_QT
>> -DWITH_QT_OPENGL -DWITH_QT_XML -DWITH_BOOST -DWITH_BOOST_SYSTEM
>> -DWITH_BOOST_FILESYSTEM -DWITH_BOOST_PROGRAM_OPTIONS
>> -DWITH_BOOST_SERIALIZATION -DWITH_BOOST_THREAD -DWITH_CGAL -DWITH_QHULL
>> -DWITH_LPSOLVE -g -O2  -D_REENTRANT -frounding-math -O3 -DNDEBUG
>> -I/usr/local/include/opencv -I/usr/local/include -I/usr/include/qt4
>> -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui
>> -I/usr/include/qt4/QtOpenGL -I/usr/include/qt4/QtXml
>> -I/usr/include/include
>> -I/home/mm/code/src/cv/vole/core/common
>> -I/home/mm/code/src/cv/vole/core/storage
>> -I/home/mm/code/src/cv/vole/core/shell
>> -I/home/mm/code/src/cv/vole/modules/vlfeat
>> -I/home/mm/code/src/cv/vole/modules/csparse
>> -I/home/mm/code/src/cv/vole/modules/superpixels
>> -I/home/mm/code/src/cv/vole/modules/sift
>> -I/home/mm/code/src/cv/vole/modules/seg_felzenszwalb
>> -I/home/mm/code/src/cv/vole/modules/similarity_measures
>> -I/home/mm/code/src/cv/vole/modules/color_processing
>> -I/home/mm/code/src/cv/vole/modules/seg_graphs
>> -I/home/mm/code/src/cv/reflectance/crf
>> -I/home/mm/code/src/cv/reflectance/gt_multi_illum
>> -I/home/mm/code/src/cv/reflectance/skinrefl
>> -I/home/mm/code/src/cv/reflectance/ms_edges
>> -I/home/mm/code/src/cv/reflectance/postseg
>> -I/home/mm/code/src/cv/reflectance/iebv
>> -I/home/mm/code/src/cv/reflectance/muil
>> -I/home/mm/code/src/cv/reflectance/illumestimators/iic/gui
>> -I/home/mm/code/src/cv/reflectance/illumestimators/iic/commands
>> -I/home/mm/code/src/cv/reflectance/illumestimators/iic/misc
>> -I/home/mm/code/src/cv/reflectance/illumestimators/iic/mask
>> -I/home/mm/code/src/cv/reflectance/illumestimators/iic/estimator
>> -I/home/mm/code/src/cv/reflectance/illumestimators
>> -I/home/mm/code/src/cv/reflectance/specularity_removal
>> -I/home/mm/code/build/cv/vole/illumestimators    -DWITH_ILLUMESTIMATORS
>> -DWITH_SUPERPIXELS -DWITH_CACHE -DWITH_GT_M_ILLUM -o
>> CMakeFiles/illumestimators-lib.dir/gamutmapping/gamutmapping2destimator.cpp.o
>> -c
>> /home/mm/code/src/cv/reflectance/illumestimators/gamutmapping/gamutmapping2destimator.cpp
>>
>> It was the same for both, ubuntu CGAL and own compiled CGAL.
>>
>> But, inspecting the above compiler line, Philipp might be right that the
>> compiler is still not searching in the right place for include headers...
>> But I have no idea why or how I should change that? Adding the explicit
>> path
>> /home/mm/.local/CGAL-3.8/include to $PATH seems a bit weird, as you
>> normally
>> don't have to do that for other libs...?
> 
> The gcc switch is -I /where/my/headers/are (remember to use the
> directory that contains the CGAL directory, not the CGAL directory
> itself).
> If you choose to do it with environment variables (which I would
> discourage) there are CMAKE_INCLUDE_PATH for CMake and
> CPLUS_INCLUDE_PATH for g++.
> 
> Maybe you should just get a simple example without CMake et al to
> compile just to see everything is compiled correctly.
> 
> HTH,
> Philipp
> 

Thanks for answering Philipp.
Yes, I also dislike the idea of setting environment variables for such a
thing and I also know the -I switch. But as I stated: the compiler line is
exactly the same, where once it works - for the Ubuntu CGAL version in
/usr/lib/CGAL - while the other time, it does not - for the self-compiled
version in /home/mm/.local/CGAL-3.8/lib/CGAL
So, I guess it's not the problem of that compiler switch...

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