Hello,

I'm trying to update from boost 1.61 to 1.62 on msvc for conda and encountered this error:

[00:03:41] Performing configuration checks
[00:03:41]
[00:03:41]     - 32-bit                   : yes
...
[00:03:41]     - x86                      : yes
[00:03:41]     - symlinks supported       : yes
[00:03:41]     - C++11 mutex              : no
[00:03:41]     - Boost.Config Feature Check: cxx11_auto_declarations : no
...
[00:03:42]     - has_icu builds           : no
...
[00:03:43]     - zlib                     : yes
[00:03:43] error: at C:/conda/conda-bld/work/boost_1_62_0/tools/build/src/kernel\modules.jam:107
[00:03:43] error: Name clash for '<pbuildboost\boost\bin.v2\standalone\ac\msvc-9.0\release\link-static\threading-multi>main.obj'
[00:03:43] error:
[00:03:43] error: Tried to build the target twice, with property sets having
[00:03:43] error: these incompatible properties:
[00:03:43] error:
[00:03:43] error:     -  <dll-path>C:\conda\envs\_build\Library\lib <library-path>C:\conda\envs\_build\Library\lib <xdll-path>C:\conda\envs\_build\Library\lib
[00:03:43] error:     -  none
[00:03:43] error:
[00:03:43] error: Please make sure to have consistent requirements for these
[00:03:43] error: properties everywhere in your project, especially for install
[00:03:43] error: targets.
[00:03:43]
[00:03:43] Command failed: cmd.exe /c bld.bat
[00:03:43] Command exited with code 1

I've got the same error for vc9, vc10 and vc14 for both 32 and 64bits.

I configure with the exact same script I used for 1.61, here's the configure part:

call bootstrap.bat

.\b2 install ^
    --build-dir=buildboost ^
    --prefix=%LIBRARY_PREFIX% ^
    toolset=msvc-%VSTRING%.0 ^
    address-model=%ARCH% ^
    variant=release ^
    threading=multi ^
    link=static,shared ^
    -j%CPU_COUNT% ^
    -s ZLIB_INCLUDE="%LIBRARY_INC%" ^
-s ZLIB_LIBPATH="%LIBRARY_LIB%"

It can be seen there: https://github.com/conda-forge/boost-feedstock/blob/master/recipe/bld.bat

I've not seen it reported in the trac tickets, did someone get the same error ?

--

J Schueller