Hello all, I do not always find time to update our project to use the latest and greatest boost version but occasionally I do. At the moment I try to move to at least version 1.39 for my target (power-pc, 32-bit, embedded linux, gcc-4.0.0 cross compiler) and see the following error when compiling the math libs: ./boost/math/special_functions/expm1.hpp:270: error: '::expm1l' has not been declared With version 1.41 it's even more severe since bjam exits with an error before any compilation can take place: error: Duplicate name of actual target: <pstage/lib>libboost_date_time.so.1.41.0 error: previous virtual target { common%common.copy-libboost_date_time.so.1.41.0.SHARED_LIB { gcc%gcc.link.dll-libboost_date_time.so.1.41.0.SHARED_LIB { gcc%gcc.compile.c++-gregorian/greg_month.o.OBJ { gregorian/greg_month.cpp.CPP } } { gcc%gcc.compile.c++-gregorian/greg_weekday.o.OBJ { gregorian/greg_weekday.cpp.CPP } } { gcc%gcc.compile.c++-gregorian/date_generators.o.OBJ { gregorian/date_generators.cpp.CPP } } } } error: created from ./stage-proper error: another virtual target { common%common.copy-libboost_date_time.so.1.41.0.SHARED_LIB { gcc%gcc.link.dll-libboost_date_time.so.1.41.0.SHARED_LIB { gcc%gcc.compile.c++-gregorian/greg_month.o.OBJ { gregorian/greg_month.cpp.CPP } } { gcc%gcc.compile.c++-gregorian/greg_weekday.o.OBJ { gregorian/greg_weekday.cpp.CPP } } { gcc%gcc.compile.c++-gregorian/date_generators.o.OBJ { gregorian/date_generators.cpp.CPP } } } } error: created from ./stage-proper error: added properties: <debug-symbols>off <define>NDEBUG <inlining>full <optimization>speed <runtime-debugging>off <variant>release error: removed properties: <debug-symbols>on <inlining>off <optimization>off <runtime-debugging>on <variant>debug /home/cpf/boost_1_41_0/tools/build/v2/build/virtual-target.jam:490: in actualize-no-scanner from module object(file-target)@4875 /home/cpf/boost_1_41_0/tools/build/v2/build/virtual-target.jam:135: in object(file-target)@4875.actualize from module object(file-target)@4875 /home/cpf/boost_1_41_0/tools/build/v2/build-system.jam:717: in load from module build-system /home/cpf/boost_1_41_0/tools/build/v2/kernel/modules.jam:283: in import from module modules /home/cpf/boost_1_41_0/tools/build/v2/kernel/bootstrap.jam:142: in boost-build from module /home/cpf/boost_1_41_0/boost-build.jam:17: in module scope from module I hope someone can look into this. Regards, -- Christian Pfligersdorffer Software Engineering http://www.eos.info