#2 [mac] displace link fails

[Samuel Powell]

Linking of displace fails on mac with the following error.

making all in displace...
g++ -L/Users/samuelpowell/Documents/UCL/toastpp_mac/lib -m64 -Wl,-rpath,/Users/samuelpowell/Documents/UCL/toastpp_mac/gcc_shared/lib -s -o /Users/samuelpowell/Documents/UCL/toastpp_mac/gcc_shared/bin/teststrain teststrain.o -ldl  -lm -L/Users/samuelpowell/Documents/UCL/toastpp_mac/gcc_shared/lib -lfe -lmath -lsuperlu -larpack -ltoastlapack -ltoastblas -lfsbtk  -L/opt/local/lib/gcc44/gcc/x86_64-apple-darwin13/4.4.7 -L/opt/local/lib/gcc44/gcc/x86_64-apple-darwin13/4.4.7/../../.. -lgfortranbegin -lgfortran 
        ld: warning: option -s is obsolete and being ignored
        ld: internal error: atom not found in symbolIndex(__Z2CGIdEiRK20TGenericSparseMatrixIT_ERK7TVectorIS1_ERS6_RdP15TPreconditionerIS1_Ei) for architecture x86_64
        clang: error: linker command failed with exit code 1 (use -v to see invocation)
        make[2]: *** [teststrain] Error 1

[Martin Schweiger]

Would it be possible to un-mangle the name of the missing symbol, so I know what to look for? I suspect it's a constructor for a preconditioner, but it would be good to know for sure. I tried

c++filt __Z2CGIdEiRK20TGenericSparseMatrixIT_ERK7TVectorIS1_ERS6_RdP15TPreconditionerIS1_Ei

but this didn't unscramble the name, so I guess clang uses a different name mangler than gcc.

[Samuel Powell]

Good guess... the unmangled name is:

int CG<double>(TGenericSparseMatrix<double> const&, TVector<double> const&, TVector<double>&, double&, TPreconditioner<double>*, int)

[Martin Schweiger]

Nevermind - I've got it now (after stripping one of the leading underscores:

int CG<double>(TGenericSparseMatrix<double> const&, TVector<double> const&, TVector<double>&, double&, TPreconditioner<double>*, int)

[Samuel Powell]

This could be due to a lack of preprocessor define NEED_EXPLICIT_INSTANTIATION. Will check.