Hi List, I am a casual user of boost library. I usually build boost for use to build CodeBlocks IDE on Windows platform. But since version 1.74, I found that bootstrap.bat was broken. So I skipped 1.74 and stuck to the old version 1.73. Today I am happy to see that 1.75 was out and I thought this problem would have been fixed since it’s a small problem. But I am wrong. I think line 15 lacks command line parameter: call .\build.bat %1. After adding that %1, I successfully built b2 with bootstrap.cmd gcc. But when I run .\b2, I get very confusing error messages (which are the same ones in 1.74): C:\Build\src\boost_1_75_0>.\b2 Performing configuration checks - default address-model : 32-bit - default architecture : x86 Building the Boost C++ Libraries. - compiler supports SSE2 : yes - compiler supports SSE4.1 : yes - has synchronization.lib : yes - C++11 mutex : yes - has BCrypt API : yes - has stat::st_mtim : no - has stat::st_mtimensec : no - has stat::st_mtimespec : no - has stat::st_birthtim : no - has stat::st_birthtimensec : no - has stat::st_birthtimespec : no - has statx : no - has statx syscall : no - cxx11_auto_declarations : yes - cxx11_constexpr : yes - cxx11_defaulted_functions : yes - cxx11_final : yes - cxx11_hdr_mutex : yes - cxx11_hdr_tuple : yes - cxx11_lambdas : yes - cxx11_noexcept : yes - cxx11_nullptr : yes - cxx11_rvalue_references : yes - cxx11_template_aliases : yes - cxx11_thread_local : no - cxx11_variadic_templates : yes - 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. note: to suppress this message, pass "--without-graph_parallel" to bjam. - zlib : yes - bzip2 : no - lzma : no - zstd : yes - lzma : no - has_lzma_cputhreads builds : no - cxx11_alignas : yes - cxx11_decltype : yes - iconv (libc) : no - iconv (separate) : yes - icu : no - icu (lib64) : no - native atomic int32 supported : yes - has message compiler : no - native syslog supported : no - pthread supports robust mutexes : no - 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. - cxx11_static_assert : yes - std::fstream is moveable and swappable : yes - Has Large File Support : yes warning: No python installation configured and autoconfiguration note: failed. See http://www.boost.org/libs/python/doc/building.html note: for configuration instructions or pass --without-python to note: suppress this message and silently skip all Boost.Python targets - libbacktrace builds : no - addr2line builds : no - WinDbg builds : yes - WinDbgCached builds : no - BOOST_COMP_GNUC >= 4.3.0 : yes - zlib : yes (cached) - bzip2 : no (cached) - lzma : no (cached) - zstd : yes (cached) - compiler supports SSE2 : no - compiler supports SSE4.1 : no - has synchronization.lib : no - C++11 mutex : no - has BCrypt API : no - is Windows CE : no - has stat::st_mtim : no - has stat::st_mtimensec : no - has stat::st_mtimespec : no - has stat::st_birthtim : no - has stat::st_birthtimensec : no - has stat::st_birthtimespec : no - has statx : no - has statx syscall : no - cxx11_auto_declarations : no - cxx11_constexpr : no - cxx11_defaulted_functions : no - cxx11_final : no - cxx11_hdr_mutex : no - cxx11_hdr_tuple : no - cxx11_lambdas : no - cxx11_noexcept : no - cxx11_nullptr : no - cxx11_rvalue_references : no - cxx11_template_aliases : no - cxx11_thread_local : no - cxx11_variadic_templates : no - native atomic int32 supported : no - has message compiler : no - native syslog supported : no - pthread supports robust mutexes : no - has_icu builds : no - compiler supports SSSE3 : no - compiler supports AVX2 : no C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:609: in start-building from module targe ts error: Recursion in main target references error: the following target are being built currently: error: ./forward ./stage ./stage-proper libs/filesystem/build/stage libs/filesystem/build/stage-depe ndencies libs/log/build/stage libs/log/build/stage-dependencies libs/filesystem/build/stage C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:776: in class@main-target.generate from module object(main-target)@7282 C:/Build/src/boost_1_75_0/tools/boost_install\boost-install.jam:1176: in generate-dependencies from module boost-install C:/Build/src/boost_1_75_0/tools/build/src/kernel\modules.jam:107: in modules.call-in from module boo st-install C:/Build/src/boost_1_75_0/tools/build/src/util\indirect.jam:105: in indirect.call from module indire ct C:/Build/src/boost_1_75_0/tools/build/src/tools\generate.jam:59: in construct from module object(gen erated-target-class)@2809 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1364: in class@basic-target.generate fro m module object(generated-target-class)@2809 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:812: in generate-really from module obje ct(main-target)@11221 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:784: in class@main-target.generate from module object(main-target)@11221 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:934: in targets.generate-from-reference from module targets C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1277: in generate-dependencies from modu le object(alias-target-class)@2810 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1334: in class@basic-target.generate fro m module object(alias-target-class)@2810 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:812: in generate-really from module obje ct(main-target)@11222 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:784: in class@main-target.generate from module object(main-target)@11222 C:/Build/src/boost_1_75_0/tools/boost_install\boost-install.jam:1176: in generate-dependencies from module boost-install C:/Build/src/boost_1_75_0/tools/build/src/kernel\modules.jam:107: in modules.call-in from module boo st-install C:/Build/src/boost_1_75_0/tools/build/src/util\indirect.jam:105: in indirect.call from module indire ct C:/Build/src/boost_1_75_0/tools/build/src/tools\generate.jam:59: in construct from module object(gen erated-target-class)@1817 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1364: in class@basic-target.generate fro m module object(generated-target-class)@1817 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:812: in generate-really from module obje ct(main-target)@7281 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:784: in class@main-target.generate from module object(main-target)@7281 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:934: in targets.generate-from-reference from module targets C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1277: in generate-dependencies from modu le object(alias-target-class)@1818 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1334: in class@basic-target.generate fro m module object(alias-target-class)@1818 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:812: in generate-really from module obje ct(main-target)@7282 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:784: in class@main-target.generate from module object(main-target)@7282 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:934: in targets.generate-from-reference from module targets C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1277: in generate-dependencies from modu le object(alias-target-class)@184 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1334: in class@basic-target.generate fro m module object(alias-target-class)@184 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:812: in generate-really from module obje ct(main-target)@5196 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:784: in class@main-target.generate from module object(main-target)@5196 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:934: in targets.generate-from-reference from module targets C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1277: in generate-dependencies from modu le object(top-level-target)@190 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1334: in alias-target-class.generate fro m module object(top-level-target)@190 C:/Build/src/boost_1_75_0\boostcpp.jam:403: in build-multiple from module object(top-level-target)@1 90 C:/Build/src/boost_1_75_0\boostcpp.jam:393: in class@top-level-target.generate from module object(to p-level-target)@190 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:812: in generate-really from module obje ct(main-target)@5198 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:784: in class@main-target.generate from module object(main-target)@5198 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:934: in targets.generate-from-reference from module targets C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1277: in generate-dependencies from modu le object(top-level-target)@191 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:1334: in alias-target-class.generate fro m module object(top-level-target)@191 C:/Build/src/boost_1_75_0\boostcpp.jam:403: in build-multiple from module object(top-level-target)@1 91 C:/Build/src/boost_1_75_0\boostcpp.jam:393: in class@top-level-target.generate from module object(to p-level-target)@191 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:812: in generate-really from module obje ct(main-target)@5199 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:784: in class@main-target.generate from module object(main-target)@5199 C:/Build/src/boost_1_75_0/tools/build/src/build\targets.jam:273: in class@project-target.generate fr om module object(project-target)@134 C:/Build/src/boost_1_75_0/tools/build/src\build-system.jam:797: in load from module build-system C:/Build/src/boost_1_75_0/tools/build/src/kernel\modules.jam:295: in import from module modules C:/Build/src/boost_1_75_0/tools/build/src/kernel/bootstrap.jam:139: in boost-build from module C:/Build/src/boost_1_75_0/boost-build.jam:17: in module scope from module