gnuradio-gruel: Undefined symbols boost::system::generic_category boost::system::system_category

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Failed clean build of gnu radio with this error in log

:info:build libtool: link: /usr/bin/clang++ -Wall -Woverloaded-virtual -pipe -O2 -arch x86_64 -D_THREAD_SAFE -arch x86_64 -o .libs/test_gruel test_gruel.o  -L/opt/local/lib pmt/.libs/libpmt-qa.a /opt/local/lib/libcppunit.dylib -lm -ldl ./.libs/libgruel.dylib -lboost_thread-mt -lstdc++
:info:build Undefined symbols for architecture x86_64:
:info:build   "boost::system::generic_category()", referenced from:
:info:build       __GLOBAL__I_a in libpmt-qa.a(pmt.o)
:info:build   "boost::system::system_category()", referenced from:
:info:build       __GLOBAL__I_a in libpmt-qa.a(pmt.o)
:info:build ld: symbol(s) not found for architecture x86_64
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)
:info:build make[5]: *** [test_gruel] Error 1

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install log

[ryandesign (Ryan Carsten Schmidt)]

Could be an incompatibility with the new boost 1.50. However, since the attached log does not show a clean build attempt, please "sudo port clean gnuradio-gruel", then try again, and if it fails again, attach the new complete main.log.