CGAL users discussion list

[Petr Felkel <>]

Hi,

I have probably found the reason of unresolved externals:

While instaling CGAL, I had installed a 64bit version of auxiliary libraries.
After instalation of 32bit version, I can compile my code (on my 64 bit system).

But the warnings remained:
    WARNING: Target "example_2" requests linking to directory "D:/winappl/CGAL/lib/". Targets may     link only to libraries. CMake is dropping the item.

I will be glad if somebody knows he answer.

Best regards
Petr

Dne 2.10.2011 12:35, Petr Felkel napsal(a):

Hi,

I need to migrate to Win7/VS2010 with CGAL.
I have installed CGAL 3.8 with additional libraries, but I cannot compile anything, not even the CGAL examples.

I have tried two slightly different methods for CGAL compilation - with and without CGAL_AUTOLINK_GMP and CGAL_AUTOLINK_MPFR
Both do not work.

Maybe - could be an error in the variables in the main CGAL configuration file (CGALConfig.cmake in d:\winappl\CGAL\lib\CGAL\ directory?:
set(CGAL_LIBRARY         "D:/winappl/CGAL/lib/")
set(CGAL_Core_LIBRARY    "D:/winappl/CGAL/lib/")
set(CGAL_ImageIO_LIBRARY "D:/winappl/CGAL/lib/")
set(CGAL_Qt3_LIBRARY     "D:/winappl/CGAL/lib/" )
set(CGAL_Qt4_LIBRARY     "D:/winappl/CGAL/lib/" )

I thought that these variables will be set by the cmake-gui ..

I put CGALConfig.cmake and CMakeCache.txt as attachments...

Thank you for your help - I try to solve this for more than two weks without any light at the end of the tunnel...

Bets regards
Petr

My two trials:

I. CGAL compiled with CGAL_AUTOLINK_GMPand CGAL_AUTOLINK_MPFR unclicked

1. CGAL: CMAKE-GUI ..
• Configure / Generate   -- OK
2. D:/winappl/CGAL-3.8/examples/Triangulation_2
• CMAKE-GUI .
• Configure OK
• Generate full of warnings:
  WARNING: Target "adding_handles" requests linking to directory "D:/winappl/CGAL/lib/". Targets may link only to libraries. CMake is dropping the item.
• Visual Studio 2010
• Build Clean
• Build ALL_BUILD
  ========= Build: 1 succeeded, 14 failed, 0 up-to-date, 1 skipped =========
  - 121 errors - unresolved external - for example:
  hierarchy.cpp
  2>triangulation_prog1.obj : error LNK2019: unresolved external symbol __imp____gmpq_clear referenced in function "public: __thiscall CGAL::Gmpq_rep::~Gmpq_rep(void)" (??1Gmpq_rep@CGAL@@QAE@XZ)
  2>triangulation_prog1.obj : error LNK2019: unresolved external symbol __imp____gmpq_set_d referenced in function "public: __thiscall CGAL::Gmpq::Gmpq(double)" (??0Gmpq@CGAL@@QAE@N@Z)

II. CGAL compiled with CGAL_AUTOLINK_GMPand CGAL_AUTOLINK_MPFR clicked (selected)

1. CGAL: CMAKE-GUI ..
• Configure / Generate   -- OK
2. D:/winappl/CGAL-3.8/examples/Triangulation_2
• CMAKE-GUI .
• Configure OK
• Generate OK
• Visual Studio 2010
• Build Clean
• Build ALL_BUILD
  - the same set of 121 errors - unresolved external - for example:
  ========== Build: 2 succeeded, 14 failed, 0 up-to-date, 0 skipped ==========
  9>  hierarchy.cpp
  2>triangulation_prog1.obj : error LNK2019: unresolved external symbol __imp____gmpq_clear referenced in function "public: __thiscall CGAL::Gmpq_rep::~Gmpq_rep(void)" (??1Gmpq_rep@CGAL@@QAE@XZ)
  2>triangulation_prog1.obj : error LNK2019: unresolved external symbol __imp____gmpq_set_d referenced in function "public: __thiscall CGAL::Gmpq::Gmpq(double)" (??0Gmpq@CGAL@@QAE@N@Z)
  
• 
  
•