CGAL users discussion list

["Laurent Rineau (CGAL/GeometryFactory)" <>]

Le Thursday 10 April 2014 08:38:59 xantares 09 a écrit :
> I compiled cgal with mingw64 from linux and there are a few issues:

Indeed, that platform in not yet supported by the CGAL project.

> 1. In cmake/modules/CGAL_SetupBoost.cmake, the boost thread component is
> misnamed for windows platforms:
> 
> find_package( Boost 1.33.1 REQUIRED thread system )
> 
> should be replaced by:
> 
> if (WIN32)
> 
>   find_package( Boost 1.33.1 REQUIRED thread_win32 system )
> 
> else ()
> 
>   find_package( Boost 1.33.1 REQUIRED thread system )
> 
> endif()

Which Linux distribution are you using? On Fedora, the mingw32 version of 
libboost_thread is named libboost_thread-mt.dll.a. If on your distribution it 
is named differently, you should discuss with the packagers of the mingw32 
boost packages, to find out a solution.
 
> 2. There's a compilation error with the x86_64 target:
> 
> Scanning dependencies of target CGAL
> 
> mingw-w64-cgal/src/CGAL-4.4/include/CGAL/double.h: In function 'double
> CGAL::sse2fabs(double)':
> 
> mingw-w64-cgal/src/CGAL-4.4/include/CGAL/double.h:132:10: error:
> 'CGAL_ALIGN_16' does not name a type

As I said, that compiler is not supported. But maybe that is easy. In the 
file 
<CGAL/sse2.h>, please try to replace the line:

  #if defined ( _MSC_VER )

by:

  #if defined( _MSC_VER ) || defined(__MINGW32__)

Maybe that is sufficient.


Edit: ... I see that below you propose something. Your solution is good too:

> But if I replace _MSC_VER by _WIN32 in include/CGAL/sse2.h, both i686 and
> x86_64 targets are fine
> 
> #if defined ( _WIN32 )
> 
> #define CGAL_ALIGN_16  __declspec(align(16))
> 
> #elif defined( __GNU__ )
> 
> #define  CGAL_ALIGN_16 __attribute__((aligned(16)))
> 
> #endif
> 
> But I don't really know what I'm doing for this one :]

In the code of <CGAL/double.h> and <CGAL/sse2.h>, we implicitly supposed that 
all MSVC-compatible compilers define _MSC_VER.

> 3. Export libraries (.dll) are properly installed to <PREFIX>/bin and import
> libraries (.dll.a) to <PREFIX>/lib.
> 
> But in the CGALConfig.cmake file, the CGAL*_LIBRARY vars refer to
> the export library name in <PREFIX>/lib:

Which CGALConfig.cmake are you talking about. There are two:
  - one that must be used when one want to use compiled libraries within the 
compilation tree,
  - one that must be used when the CGAL libraries are installed by 'make 
install'.

> set(CGAL_LIBRARY         "/usr/i686-w64-mingw32/lib/libCGAL.dll")

That seems to be the CGALConfig.cmake that will be installed.