py26-clnum: build fails during linking, 'internal error: atom not found in symbolIndex(__ZNKSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE3strEv) for architecture x86_64'

[dbevans (David B. Evans)]

On Yosemite 10.10.5 Xcode 7.2.1

/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ld: warning: option -s is obsolete and being ignored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
Command failed:  cd "/opt/local/var/macports/build/_opt_macports_trunk_dports_python_py-clnum/py26-clnum/work/clnum-1.6" && /opt/local/Library/Frameworks/Python.framework/Versions/2.6/bin/python2.6 setup.py --no-user-cfg build 
Exit code: 1

Build log attached

[dbevans (David B. Evans)]

Build log showing error

[ryandesign (Ryan Carsten Schmidt)]

Has duplicate #51195.

[ryandesign (Ryan Carsten Schmidt)]

In 3986833a7d69882945b3e9721735ba397da52b10/macports-ports (master):

py-clnum: Fix build failure with obsolete -s flag

Closes: #50631

[ryandesign (Ryan Carsten Schmidt)]

In 3986833a7d69882945b3e9721735ba397da52b10/macports-ports (dar, master, py38-reproject, revert-6945-rust-1.43.0, wireshark):

py-clnum: Fix build failure with obsolete -s flag

Closes: #50631