Not sure when this started failing other than it was some time this past week.. ===== Froggy:quickbook grafik$ pwd /Users/grafik/devroots/Boost/trunk/tools/quickbook Froggy:quickbook grafik$ b2 toolset=clang ...patience... ...patience... ...found 1735 targets... Froggy:quickbook grafik$ b2 toolset=darwin ...patience... ...patience... ...found 1735 targets... ...updating 3 targets... darwin.compile.c++ ../../bin.v2/tools/quickbook/src/darwin-4.2.1/release/link-static/quickbook.o ../../boost/any.hpp: In function ‘ValueType boost::any_cast(boost::any&) [with ValueType = const int&]’: ../../boost/any.hpp:308: instantiated from ‘ValueType boost::any_cast(const boost::any&) [with ValueType = const int&]’ ../../boost/program_options/variables_map.hpp:69: instantiated from ‘const T& boost::program_options::variable_value::as() const [with T = int]’ src/quickbook.cpp:387: instantiated from here ../../boost/any.hpp:292: error: forming reference to reference type ‘const int&’ ../../boost/any.hpp:294: error: forming reference to reference type ‘const int&’ ../../boost/any.hpp: In function ‘ValueType boost::any_cast(boost::any&) [with ValueType = const std::vector, std::allocator > >&]’: ../../boost/any.hpp:308: instantiated from ‘ValueType boost::any_cast(const boost::any&) [with ValueType = const std::vector, std::allocator > >&]’ ../../boost/program_options/variables_map.hpp:69: instantiated from ‘const T& boost::program_options::variable_value::as() const [with T = std::vector, std::allocator > >]’ src/quickbook.cpp:421: instantiated from here ../../boost/any.hpp:292: error: forming reference to reference type ‘const std::vector, std::allocator > >&’ ../../boost/any.hpp:294: error: forming reference to reference type ‘const std::vector, std::allocator > >&’ ../../boost/any.hpp: In function ‘ValueType boost::any_cast(boost::any&) [with ValueType = const std::basic_string&]’: ../../boost/any.hpp:308: instantiated from ‘ValueType boost::any_cast(const boost::any&) [with ValueType = const std::basic_string&]’ ../../boost/program_options/variables_map.hpp:69: instantiated from ‘const T& boost::program_options::variable_value::as() const [with T = std::basic_string]’ src/quickbook.cpp:438: instantiated from here ../../boost/any.hpp:292: error: forming reference to reference type ‘const std::basic_string&’ ../../boost/any.hpp:294: error: forming reference to reference type ‘const std::basic_string&’ ../../boost/system/error_code.hpp: At global scope: ../../boost/system/error_code.hpp:222: warning: ‘boost::system::posix_category’ defined but not used ../../boost/system/error_code.hpp:223: warning: ‘boost::system::errno_ecat’ defined but not used ../../boost/system/error_code.hpp:224: warning: ‘boost::system::native_ecat’ defined but not used "g++" -ftemplate-depth-300 -O3 -finline-functions -Wno-inline -Wall -gdwarf-2 -fexceptions -g0 -DBOOST_ALL_NO_LIB=1 -DBOOST_DETAIL_CONTAINER_FWD -DBOOST_FILESYSTEM_NO_DEPRECATED -DBOOST_FILESYSTEM_STATIC_LINK=1 -DBOOST_SYSTEM_STATIC_LINK=1 -DNDEBUG -I"../.." -c -o "../../bin.v2/tools/quickbook/src/darwin-4.2.1/release/link-static/quickbook.o" "src/quickbook.cpp" ...failed darwin.compile.c++ ../../bin.v2/tools/quickbook/src/darwin-4.2.1/release/link-static/quickbook.o... ...skipped quickbook for lack of quickbook.o... ...skipped quickbook for lack of quickbook... ...failed updating 1 target... ...skipped 2 targets... ===== Seems some of the std::any conformance changes broke for the GCC included in the Xcode 4.6.2. -- -- -- Grafik - Don't Assume Anything -- Redshift Software, Inc. - http://redshift-software.com -- rrivera/acm.org - grafik/redshift-software.com -- 102708583/icq - grafikrobot/aim - grafikrobot/yahoo