CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

Dror Atariah wrote:
> First, in 4.2 there are two variants (with or without a value of DCGAL_DIR 
> given). Which one is the right one?
Depends if you defined CGAL_DIR as an environment variable.

> I did not try anything without CGAL. How should I check my cmake installation?
>
> Let me remind that "cmake -GXcode ." worked for the example "Voronoi_diag_2". Is it a 
> sign that "cmake" is properly installed?
Indeed. I guess this is working with Xcode?

The cmake error message may be indicating that you are missing
building tools available from your terminal.

S.

> On Jan 3, 2011, at 15:16 PM, Sebastien Loriot (GeometryFactory) wrote:
>
> > 4th attempt 2) was the correct one.
> >
> > It seems that your cmake is not correctly install/configured.
> > Have you tried a simple example without CGAL to see if the
> > problem comes from your cmake installation?
> >
> > S.
> >
> >
> >
> >
> > Dror Atariah wrote:
> > > I am new to CGAL and having problems setting up basic programs. First I'll
> > > try to describe my system setting. I'm using mac os X (10.6.5). As far as I
> > > know, the compiler I have is g++.
> > > I managed to run the example Voronoi_diag_2. For that I first ran  cmake
> > > -GXcode . in the project's directory, and then I was able to run it from
> > > XCode.
> > > Next, I tried to compile and run the following example (taken from the
> > > manual):
> > > #include <iostream> #include 
> > > <CGAL/Exact_predicates_inexact_constructions_kernel.h>
> > > #include <CGAL/convex_hull_2.h>
> > > typedef CGAL::Exact_predicates_inexact_constructions_kernel K; typedef 
> > > K::Point_2 Point_2;
> > > int main() {
> > >         Point_2 points[5] = { Point_2(0,0), Point_2(10,0), Point_2(10,10),
> > > Point_2(6,5), Point_2(4,1) };
> > >         Point_2 result[5];
> > >         Point_2 *ptr = CGAL::convex_hull_2( points, points+5, result );       
> > >           std::cout
> > > << ptr - result << " points on the convex hull" <<
> > >         std::endl; return 0;
> > > }
> > > Here I tried the following options, neither produced the desired results.
> > > 1st attempt:
> > > This is the most naive approach, which I was expecting not to work:
> > > g++ array_convex_hull_2.cpp
> > > The output was:
> > > array_convex_hull_2.cpp:2:64: error:
> > > CGAL/Exact_predicates_inexact_constructions_kernel.h: No such file or
> > > directory
> > > array_convex_hull_2.cpp:3:32: error: CGAL/convex_hull_2.h: No such file or
> > > directory
> > > array_convex_hull_2.cpp:4: error: ‘CGAL’ has not been declared
> > > array_convex_hull_2.cpp:4: error: expected initializer before ‘K’
> > > array_convex_hull_2.cpp:5: error: ‘K’ has not been declared
> > > array_convex_hull_2.cpp:5: error: expected initializer before ‘Point_2’
> > > array_convex_hull_2.cpp: In function ‘int main()’:
> > > array_convex_hull_2.cpp:7: error: ‘Point_2’ was not declared in this scope
> > > array_convex_hull_2.cpp:7: error: expected `;' before ‘points’
> > > array_convex_hull_2.cpp:8: error: expected `;' before ‘result’
> > > array_convex_hull_2.cpp:9: error: ‘ptr’ was not declared in this scope
> > > array_convex_hull_2.cpp:9: error: ‘CGAL’ has not been declared
> > > array_convex_hull_2.cpp:9: error: ‘points’ was not declared in this scope
> > > array_convex_hull_2.cpp:9: error: ‘result’ was not declared in this scope
> > > 2nd attempt:
> > > In the terminal I ran in the directory where the file was:
> > > cmake .
> > > The output was:
> > > CMake Error: The source directory
> > > "/Users/drorata/Documents/academics/programing/CGAL/examples and
> > > tests/testProject" does not appear to contain CMakeLists.txt.
> > > Specify --help for usage, or press the help button on the CMake GUI.
> > > 3rd attempt:
> > > Again, in the directory where the source is, I ran:
> > > cmake -DCGAL_DIR=/opt/local/lib/CGAL/CGALConfig.cmake .
> > > Here the output was again:
> > > CMake Error: The source directory
> > > "/Users/drorata/Documents/academics/programing/CGAL/examples and
> > > tests/testProject" does not appear to contain CMakeLists.txt.
> > > Specify --help for usage, or press the help button on the CMake GUI.
> > > 4th attempt:
> > > I ran the script cgal_create_cmake_script, producing the output: created 
> > > CMakeLists.txt in
> > > /Users/drorata/Documents/academics/programing/CGAL/examples and
> > > tests/testProject ...
> > > Then I did one of the following:
> > > 1) Simply make. This returned make: *** No targets specified and no makefile 
> > > found.  Stop.
> > > 2) Then I ran either cmake . or cmake
> > > -DCGAL_DIR=/opt/local/lib/CGAL/CGALConfig.cmake ., In both cases the output
> > > was:
> > > CMake Error: Error required internal CMake variable not set, cmake may be
> > > not be built correctly.
> > > Missing variable is:
> > > CMAKE_and_COMPILER_ENV_VAR
> > > CMake Error: Error required internal CMake variable not set, cmake may be
> > > not be built correctly.
> > > Missing variable is:
> > > CMAKE_and_COMPILER
> > > CMake Error: Could not find cmake module
> > > file:/Users/drorata/Documents/academics/programing/CGAL/examples and
> > > tests/testProject/CMakeFiles/CMakeandCompiler.cmake
> > > CMake Error: Error required internal CMake variable not set, cmake may be
> > > not be built correctly.
> > > Missing variable is:
> > > CMAKE_testProject_example_COMPILER_ENV_VAR
> > > CMake Error: Error required internal CMake variable not set, cmake may be
> > > not be built correctly.
> > > Missing variable is:
> > > CMAKE_testProject_example_COMPILER
> > > CMake Error: Could not find cmake module
> > > file:/Users/drorata/Documents/academics/programing/CGAL/examples and
> > > tests/testProject/CMakeFiles/CMaketestProject_exampleCompiler.cmake
> > > CMake Error: Could not find cmake module file:CMakeandInformation.cmake
> > > CMake Error: Could not find cmake module
> > > file:CMaketestProject_exampleInformation.cmake
> > > CMake Error: CMAKE_and_COMPILER not set, after EnableLanguage
> > > CMake Error: CMAKE_testProject_example_COMPILER not set, after
> > > EnableLanguage
> > > -- Build type: Release
> > > -- USING CXXFLAGS = '-pipe -O2 -arch x86_64  -frounding-math
> > > -fno-strict-aliasing -O3 -DNDEBUG'
> > > -- USING EXEFLAGS = '-L/opt/local/lib -arch x86_64
> > > -Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib
> > > '
> > > -- Targetting Unix Makefiles
> > > -- Using  compiler.
> > > -- DARWIN_VERSION=10
> > > -- Mac Leopard detected
> > > -- Configuring incomplete, errors occurred!
> > > Maybe I should add that, I installed CGAL using macports.
> > > I tried to consult the manual, but I couldn't figure out what should I do.
> > > Can someone help me with the first initialization of a small project?
> > > Actually, any help would be appreciated!
> > > Thanks in advance,
> > > Dror
> > --
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>
> Dror Atariah
> Freie Universität Berlin
> ----------------------------------------------
> Landline:           +49-30-83875166
> Mobile:            +49-176-67116376
> http://page.mi.fu-berlin.de/atariah/