I am running a Ubuntu 10.04 Desktop system which has GCC 4.4.3 installed (the default). When trying to compile program_options I am getting the following error: [ 1%] Building CXX object libs/program_options/src/CMakeFiles/boost_program_options-mt-shared.dir/conf ig_file.cpp.o In file included from /home/mjackson/Workspace/MXABoost/boost/mpl/apply.hpp:23, from /home/mjackson/Workspace/MXABoost/boost/iterator/iterator_facade.hpp:34, from /home/mjackson/Workspace/MXABoost/boost/program_options/eof_iterator.hpp:9, from /home/mjackson/Workspace/MXABoost/boost/program_options/detail/config_file.h pp:17, from /home/mjackson/Workspace/MXABoost/libs/program_options/src/config_file.cpp:1 0: /home/mjackson/Workspace/MXABoost/boost/mpl/apply_wrap.hpp:81:31: error: missing binary operator before token "(" /home/mjackson/Workspace/MXABoost/boost/mpl/apply_wrap.hpp:173:31: error: missing binary operator before token "(" In file included from /home/mjackson/Workspace/MXABoost/boost/mpl/bind.hpp:27, from /home/mjackson/Workspace/MXABoost/boost/mpl/lambda.hpp:18, from /home/mjackson/Workspace/MXABoost/boost/mpl/apply.hpp:25, from /home/mjackson/Workspace/MXABoost/boost/iterator/iterator_facade.hpp:34, from /home/mjackson/Workspace/MXABoost/boost/program_options/eof_iterator.hpp:9, from /home/mjackson/Workspace/MXABoost/boost/program_options/detail/config_file.h pp:17, from /home/mjackson/Workspace/MXABoost/libs/program_options/src/config_file.cpp:1 0: /home/mjackson/Workspace/MXABoost/boost/mpl/apply_wrap.hpp:81:31: error: missing binary operator before token "(" /home/mjackson/Workspace/MXABoost/boost/mpl/apply_wrap.hpp:173:31: error: missing binary operator before token "(" In file included from /home/mjackson/Workspace/MXABoost/boost/mpl/lambda.hpp:18, from /home/mjackson/Workspace/MXABoost/boost/mpl/apply.hpp:25, from /home/mjackson/Workspace/MXABoost/boost/iterator/iterator_facade.hpp:34, from /home/mjackson/Workspace/MXABoost/boost/program_options/eof_iterator.hpp:9, from /home/mjackson/Workspace/MXABoost/boost/program_options/detail/config_file.h pp:17, from /home/mjackson/Workspace/MXABoost/libs/program_options/src/config_file.cpp:1 0: /home/mjackson/Workspace/MXABoost/boost/mpl/bind.hpp:364:31: error: missing binary operator before token "(" /home/mjackson/Workspace/MXABoost/boost/mpl/bind.hpp:531:31: error: missing binary operator before token "(" In file included from /home/mjackson/Workspace/MXABoost/boost/mpl/lambda.hpp:22, from /home/mjackson/Workspace/MXABoost/boost/mpl/apply.hpp:25, from /home/mjackson/Workspace/MXABoost/boost/iterator/iterator_facade.hpp:34, from /home/mjackson/Workspace/MXABoost/boost/program_options/eof_iterator.hpp:9, from /home/mjackson/Workspace/MXABoost/boost/program_options/detail/config_file.h pp:17, from /home/mjackson/Workspace/MXABoost/libs/program_options/src/config_file.cpp:1 0: /home/mjackson/Workspace/MXABoost/boost/mpl/aux_/full_lambda.hpp:230:31: error: missing binary operator before token "(" In file included from /home/mjackson/Workspace/MXABoost/boost/iterator/iterator_facade.hpp:34, from /home/mjackson/Workspace/MXABoost/boost/program_options/eof_iterator.hpp:9, from /home/mjackson/Workspace/MXABoost/boost/program_options/detail/config_file.h pp:17, from /home/mjackson/Workspace/MXABoost/libs/program_options/src/config_file.cpp:1 0: /home/mjackson/Workspace/MXABoost/boost/mpl/apply.hpp:138:31: error: missing binary operator before token "(" make[2]: *** [libs/program_options/src/CMakeFiles/boost_program_options-mt-shared.dir/con fig_file.cpp.o] Error 1 make[1]: *** [libs/program_options/src/CMakeFiles/boost_program_options-mt-shared.dir/all ] Error 2 make: *** [all] Error 2 Has anyone else seen this error message? Thanks Mike Jackson