As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy.
I tried to build it on Ubuntu 18.04 with GCC 8 and C++17, with support for LibICU enabled, and got the following error: ``` error: Name clash for '<p/home/jenkins/workspace/Pipeline_Boost-1.71.0-rc2/gcc8/installed/opt/BENOCS/gcc8/lib/x86_64-linux-gnu>libboost_filesystem-gcc8-mt-x64-1_71.so.1.71.0' error: error: Tried to build the target twice, with property sets having error: these incompatible properties: error: error: - none error: - <dll-path>/opt/BENOCS/gcc8/bin <linkflags>-L/opt/BENOCS/gcc8/lib/x86_64-linux-gnu <linkflags>-licudata <linkflags>-licui18n <linkflags>-licuuc error: error: Please make sure to have consistent requirements for these error: properties everywhere in your project, especially for install error: targets. ``` My build-settings were the following: ``` CFLAGS = -m64 -fpic -fdiagnostics-color=always -O3 -g CXXFLAGS = -m64 -fpic -fdiagnostics-color=always -O3 -g -std=c++17 LDFLAGS = -Wl,--as-needed b2 -j4 -q \ --build-dir="/home/jenkins/workspace/Pipeline_Boost-1.71.0-rc2/gcc8/build/boost" \ --build-type=minimal \ --layout=versioned \ address-model=64 \ install \ --prefix="/home/jenkins/workspace/Pipeline_Boost-1.71.0-rc2/gcc8/installed/opt/BENOCS/gcc8" \ --libdir="/home/jenkins/workspace/Pipeline_Boost-1.71.0-rc2/gcc8/installed/opt/BENOCS/gcc8/lib/x86_64-linux-gnu" \ dll-path="/opt/BENOCS/gcc8/lib/x86_64-linux-gnu" \ -sICU_PATH="/opt/BENOCS/gcc8" \ -sICU_LINK="-L/opt/BENOCS/gcc8/lib/x86_64-linux-gnu -licuuc -licudata -licui18n" \ toolset=gcc-8 \ cflags="${CFLAGS}" \ cxxflags="${CXXFLAGS}" \ linkflags="${LDFLAGS}" ``` The Boost configuration-checks resulted in: ``` Performing configuration checks - default address-model : 64-bit - default architecture : x86 - C++11 mutex : yes - lockfree boost::atomic_flag : yes - Boost.Config Feature Check: cxx11_auto_declarations : yes - Boost.Config Feature Check: cxx11_constexpr : yes - Boost.Config Feature Check: cxx11_defaulted_functions : yes - Boost.Config Feature Check: cxx11_final : yes - Boost.Config Feature Check: cxx11_hdr_mutex : yes - Boost.Config Feature Check: cxx11_hdr_tuple : yes - Boost.Config Feature Check: cxx11_lambdas : yes - Boost.Config Feature Check: cxx11_noexcept : yes - Boost.Config Feature Check: cxx11_nullptr : yes - Boost.Config Feature Check: cxx11_rvalue_references : yes - Boost.Config Feature Check: cxx11_template_aliases : yes - Boost.Config Feature Check: cxx11_thread_local : yes - Boost.Config Feature Check: cxx11_variadic_templates : yes - has_icu builds : yes warning: non-free usage requirements <runtime-link>shared ignored warning: in main-target icu_options at libs/regex/build/Jamfile.v2:97 warning: Graph library does not contain MPI-based parallel components. note: to enable them, add "using mpi ;" to your user-config.jam. note: to suppress this message, pass "--without-graph_parallel" to bjam. - zlib : yes - bzip2 : yes - lzma : no - zstd : no - iconv (libc) : yes - icu : yes - native-atomic-int32-supported : yes - native-syslog-supported : yes - pthread-supports-robust-mutexes : yes - compiler-supports-ssse3 : yes - compiler-supports-avx2 : yes - gcc visibility : yes - long double support : yes 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. - libbacktrace builds : yes - addr2line builds : yes - WinDbg builds : no - WinDbgCached builds : no - BOOST_COMP_GNUC >= 4.3.0 : yes - zlib : yes - bzip2 : yes - lzma : no - zstd : no ``` Either I did something completely wrong or the configuration files of Boost.FileSystem are inconsistent regarding some compiler-flags!? Hope that is helpful, Deniz