I am having trouble building Boost 1.52.0 libraries with g++ 4.7.2 on Linux Fedora 14. I was able to build it with 4.7.1, and I think our Systems guys configured 4.7.2 the same as 4.7.1, so I need help. This is in my user-config: using gcc : 4.7.2 : /opt/gcc-4.7.2/bin/g++ :<compileflags>"-fPIC -fno-strict-aliasing -fno-tree-ccp"<linkflags>"-fPIC -fno-strict-aliasing -fno-tree-ccp" ; This is my command line: bin/bjam --user-config=user-config.LINUX_INTF14X threading=multi instruction-set=core2 address-model=64 variant=release link=static,shared --stagedir=stageF14X And this is the result (snipped out redundant info): Building the Boost C++ Libraries. Performing configuration checks - x86 : no - power : no - arm : no - mips1 : no error: No best alternative for libs/context/build/asm_context_sources next alternative: required properties:<abi>aapcs<architecture>arm<binary-format>elf<toolset>gcc not matched next alternative: required properties:<abi>aapcs<architecture>arm<binary-format>elf<toolset>qcc not matched [snip] next alternative: required properties:<abi>ms<address-model>64<architecture>x86<binary-format>pe<target-os>windows not matched - has_icu builds : no warning: Graph library does not contain MPI-based parallel components. note: to enable them, add "using mpi ;" to your user-config.jam - iconv (libc) : no - iconv (separate) : no - icu : no - icu (lib64) : no - Boost.Locale needs either iconv or ICU library to be built. [snip] - Boost.Locale needs either iconv or ICU library to be built. - gcc visibility : no - long double support : no warning: skipping optional Message Passing Interface (MPI) library. note: to enable MPI support, add "using mpi ;" to user-config.jam. note: to suppress this message, pass "--without-mpi" to bjam. note: otherwise, you can safely ignore this message. error: No best alternative for libs/context/build/asm_context_sources next alternative: required properties:<abi>aapcs<architecture>arm<binary-format>elf<toolset>gcc not matched [snip] -- Dick Hadsell 203-992-6320 Fax: 203-992-6001 Reply-to: hadsell@blueskystudios.com Blue Sky Studios http://www.blueskystudios.com 1 American Lane, Greenwich, CT 06831-2560