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I'm attempting to install an open source software qml in Mac high sierra. It's an interface btw kdb+ and LAPACK,BLAS. I've got the error message:

gcc-10 -m64  -fPIC -pipe -bundle -undefined dynamic_lookup -o qml.so const.o alloc.o util.o opt.o libm.o cephes.o lapack.o conmin.o conmax.o nlopt.o \
        ../lib/libprob.a ../lib/libconmax.a ../lib/libnlopt.a \
         \
        -llapack -lblas \
        -lgfortran \
        -lm \
        -exported_symbols_list qml.symlist
duplicate symbol _call in:
    conmin.o
    conmax.o
duplicate symbol _call in:
    conmin.o
    nlopt.o
ld: 2 duplicate symbols for architecture x86_64
collect2: error: ld returned 1 exit status

I did some research and saw people fixed this issue by removing some Flags. here is the link can anyone help to see if any FLAG should be removed? Thanks. Here are the Flags: FLAGS := -m64 -fPIC -pipe LD_SHARED := -bundle -undefined dynamic_lookup

Lynette
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  • If it worked with gcc 9 and earlier, then I think you need to add `-fcommon`. In gcc 10 the default was changed to `-fno-common`, see [gcc changes](https://gcc.gnu.org/gcc-10/changes.html#c). – ssbssa Aug 18 '20 at 10:22
  • thanks a lot, it works. – Lynette Aug 18 '20 at 19:25

0 Answers0