CGAL users discussion list

[Marc Glisse <>]

On Wed, 23 Apr 2014, Becksfort, Jared wrote:

> I have had some trouble getting programs using CGAL to run using c++11 on
> a mac 10.8.5.
>
> The issue is very likely to be related to the stdlib argument, I think.  I
> built boost using b2 and cgal using cmake with "-std=c++11
> -stdlib=libc++", not brew or macports.  I did use brew to install each
> package a while back before using c++11, though, so there is some
> possibility of files hanging around built against cstdlib (or whatever).
>
>
> Does anyone know a good way to unravel or sort out this problem?  Or
> maybe, hopefully, I am just doing something dumb that will be easy for
> someone to spot?
>
> My clang++ version is
>
> -----------
> Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)
> Target: x86_64-apple-darwin12.5.0
> Thread model: posix
> -----------
>
>
> The unsuccessful CGAL program build command is:
> --------------
> clang++ -std=c++11 -stdlib=libc++ -L/usr/local/lib -lCGAL -lboost_thread
> -o sout scratch_cgal.cpp
>
> Undefined symbols for architecture x86_64:
>  "std::__1::basic_istream<char, std::__1::char_traits<char>
> > ::operator>>(std::__1::basic_istream<char, std::__1::char_traits<char> >&
> > (*)(std::__1::basic_istream<char, std::__1::char_traits<char> >&))",
> > referenced from:
>      CGAL::operator>>(std::__1::basic_istream<char,
> std::__1::char_traits<char> >&, CGAL::File_header_extended_OFF&) in
> libCGAL.a(all_files.cpp.o)
> ld: symbol(s) not found for architecture x86_64
> clang: error: linker command failed with exit code 1 (use -v to see
> invocation)
> --------------

Could you add -v to your command line and show the output?

--
Marc Glisse