py26-clnum: fails to build

[petrrr]

The port fails to compile on OS X 10.10.5. Might be clang specific?

/usr/bin/clang++ -L/opt/local/lib -Wl,-headerpad_max_install_names -bundle -undefined dynamic_lookup -arch x86_64 -arch x86_64 -I/opt/local/include build/temp.macosx-10.10-x86_64-2.6/clnum/src/clnum.o -lcln -lgmp -o build/lib.macosx-10.10-x86_64-2.6/clnum/clnum.so -s
ld: warning: option -s is obsolete and being ignored
ld: internal error: atom not found in symbolIndex(__ZNKSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE3strEv) for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command '/usr/bin/clang++' failed with exit status 1

Just wondering if we want to bother with fixing this. This part was never moved to py27 and maybe nobody real cares.

[ryandesign (Ryan Carsten Schmidt)]

Duplicate of #50631.