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[Myirci <>]

Hi,

Please find the attached CMakeLists.txt and also the source code for your convenience. 

I am using Ubuntu 20.04.1 LTS, g++ version 9.3.0 with C++ 14

Thanks

On Wed, Sep 23, 2020 at 2:40 PM Laurent Rineau (CGAL/GeometryFactory) <> wrote:

On Wednesday, September 23, 2020 12:11:24 PM CEST Myirci wrote:
> Hi,
>
> Thank you Laurent for your answer, sorry for my late reply, I had a computer
> issue and could not try out your suggestion.
>
> I have installed libmpfi-dev and I'm now sure that my CMakeLists.txt can
> find it along with GMP and MPFR (As I observe it in cmake-gui). However, I
> still cannot make the simple program run. Here is the error I got, does it
> make any sense?

Please show your CMakeLists.txt, so that we can try to reproduce the issue.



--
Laurent Rineau, PhD
R&D Engineer at GeometryFactory           http://www.geometryfactory.com/
Release Manager of the CGAL Project       http://www.cgal.org/




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Murat Yirci

cmake_minimum_required(VERSION 3.0)

project(Algebraic_Kernel_Test)

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} 
/usr/lib/x86_64-linux-gnu/cmake/CGAL)

set(CMAKE_BUILD_TYPE Release)

add_definitions(-std=c++14)

find_package(GMP REQUIRED)
if(GMP_FOUND)
        include_directories(${GMP_INCLUDE_DIR})
        set(LINK_LIBS ${LINK_LIBS} ${GMP_LIBRARIES})
else() 
        message(STATUS "GMP Not Found")
endif(GMP_FOUND)

find_package(MPFR REQUIRED)
if(MPFR_FOUND)
        set(LINK_LIBS ${LINK_LIBS} ${MPFR_LIBRARIES})
else(MPFR_FOUND)
        message(STATUS "MPFR could not be found")
endif(MPFR_FOUND)

find_package(CGAL REQUIRED)

find_package(MPFI REQUIRED)
if(MPFI_FOUND)
        set(LINK_LIBS ${LINK_LIBS} ${MPFI_LIBRARIES})
else(MPFI_FOUND)
        message(STATUS "MPFI could not be found")
endif(MPFI_FOUND)

message(STATUS "LINK LIBS: " ${LINK_LIBS})

add_executable(test test.cpp)
target_link_libraries(test CGAL::CGAL ${LINK_LIBS})
#include <CGAL/config.h>
#include <CGAL/Algebraic_kernel_d_1.h>
#include <CGAL/Gmpz.h>
#include <vector>

typedef CGAL::Algebraic_kernel_d_1<CGAL::Gmpz>          AK;
typedef AK::Coefficient                                 Coefficient;
typedef AK::Polynomial_1                                Polynomial_1;
typedef AK::Algebraic_real_1                            Algebraic_real_1;
typedef AK::Bound                                       Bound;
typedef std::pair<Bound,Bound>                          Interval;

int main()
{
    AK ak;
    AK::Construct_algebraic_real_1 construct_algebraic_real_1 = 
ak.construct_algebraic_real_1_object();
    Polynomial_1 x = CGAL::shift(AK::Polynomial_1(1),1); // the monomial x
    Algebraic_real_1 a = construct_algebraic_real_1(x*x-2,1); //  sqrt(2)

    std::cout << "sign of a is                 : " << CGAL::sign(a)      << 
"\n";
        std::cout << "double approximation of a is : " << CGAL::to_double(a) 
<< "\n";
    std::cout << "double lower bound of a      : " << 
CGAL::to_interval(a).first  << "\n";
    std::cout << "double upper bound of a      : " << 
CGAL::to_interval(a).second << "\n";

    return 0;
}