Hi, I wonder whether anyone from the Boost.Build project would be able to comment, and can explain the error message. It's true I relatively recently added https://github.com/boostorg/python/commit/d4d41d94aecc9f8098aabd3587fcb95458..., but I don't see how this could cause the observed error (which doesn't seem to be about a failed Python detection, but about an internal Boost.Build error (to detect the `python.python_for_extensions` rule). I can't reproduce the problem myself. From the generated output it seems as if passing `--without-python` would suppress the failure, but that hadn't been necessary before, or has it ? Thanks, On 11.03.2018 05:08, Olaf van der Spek via Boost wrote:
On Sat, Mar 10, 2018 at 8:57 PM, Daniel James via Boost
wrote: 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. Windows 7 x64; MSVC 15.6.1; normal cmd prompt:
C:\VC\boost>b2 libs\log\build\Jamfile.v2:45: Unescaped special character in argument <define>$(flag)=1 libs\python\Jamfile:49: Unescaped special character in argument [*\/:."'] C:/VC/boost/libs/predef/check/../tools/check\predef.jam:46: Unescaped special character in argument $(language)::$(expression) Performing configuration checks
- default address-model : 32-bit - default architecture : x86
Building the Boost C++ Libraries.
- symlinks supported : yes - C++11 mutex : 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_regex : 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 : no warning: Graph library does not contain MPI-based parallel components. note: to enable them, add "using mpi ;" to your user-config.jam - zlib : no - bzip2 : no - lzma : no - iconv (libc) : no - iconv (separate) : no - icu : no - icu (lib64) : no - native-atomic-int32-supported : yes - message-compiler : yes - native-syslog-supported : no - pthread-supports-robust-mutexes : no - compiler-supports-visibility : no - compiler-supports-ssse3 : yes - compiler-supports-avx2 : yes - gcc visibility : no - 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. 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 error: at C:/VC/boost/tools/build/src/kernel\modules.jam:107 error: Unable to find file or target named error: 'python_for_extensions' error: referred to from project at error: ''
--without-python Is Python enabled by default?
Stefan -- ...ich hab' noch einen Koffer in Berlin...