first off, I'm getting "cygcheck: Wrong architecture. Only ix86
executables supported." when running cygcheck.
That said, ...

The attached multithread.cpp ought to run as far as I can tell from
Cygwin, Boost, & the web.
(There is a posting from 2010 regarding problems with building
boost::thread on Cygwin, but I'm able to build, and anyway, the Cygwin
package already includes an up-to-date version of  boost::thread.)

If I try to compile the attached code thus:
     $  g++ -D THREADED multithread.cpp
I get:
     /tmp/ccpBRr49.o:multithread.cpp:(.text+0x259): undefined
reference to `boost::system::generic_category()'
     /tmp/ccpBRr49.o:multithread.cpp:(.text+0x263): undefined
reference to `boost::system::generic_category()'
     /tmp/ccpBRr49.o:multithread.cpp:(.text+0x26d): undefined
reference to `boost::system::system_category()'
     /usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../../i686-pc-cygwin/bin/ld:
/tmp/ccpBRr49.o: bad reloc address 0xb in
section`.text$_ZN5boost6system14error_categoryD1Ev[boost::system::error_category::~error_category()]'
     collect2: ld returned 1 exit status

If I add the option to load libbost_system (as suggested by some
threads on the web):
     $  g++ -D THREADED -llibboost_system multithread.cpp
I get:
     /usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../../i686-pc-cygwin/bin/ld:
cannot find -l/usr/local/lib/libboost_system
     collect2: ld returned 1 exit status

This result is consistent regardless of whether I specify the full
file name or absolute path.

BTW:
     $ updatedb && locate libboost_program_options

/cygdrive/f/_engineeringStocks/boost_1_53_0/bin.v2/libs/program_options/build/gcc-4.5.3/release/link-static/threading-multi/libboost_program_options.a

/cygdrive/f/_engineeringStocks/boost_1_53_0/bin.v2/libs/program_options/build/gcc-4.5.3/release/threading-multi/libboost_program_options.dll.a
     /lib/libboost_program_options-mt.dll.a
     /usr/lib/libboost_program_options-mt.dll.a
     /usr/local/lib/libboost_program_options.a
     /usr/local/lib/libboost_program_options.dll.a


thank you for your attention and (hopefully) help,
Lewis