Re: [Boost-users] building boost 1.67/1.68b1 on osx with emscripten 1.38

Subject: Re: [Boost-users] building boost 1.67/1.68b1 on osx with emscripten 1.38
From: danielle amethyst brake (danielleamethystbrake_at_[hidden])
Date: 2018-07-27 13:21:05

>
>
>
> > "how do I set the default architecture when building boost?"
> >
>
> address-model=64 architecture=x86
>
>
>
Indeed, using these two commands as
  ./b2 address-model=64 architecture=x86
changes both of those properties as expected. however, if I use them in
conjunction with *toolset=emscripten*, the problem I originally asked about
persists:

./b2 toolset=emscripten address-model=64 architecture=x86
Performing configuration checks

    - default address-model    : 32-bit
    - default architecture     : none

Building the Boost C++ Libraries.

    - symlinks supported       : yes
error: No best alternative for libs/context/build/asm_sources
    next alternative: required properties: <abi>aapcs <address-model>32
<architecture>arm <binary-format>elf <threading>multi <toolset>clang
        not matched
    next alternative: required properties: <abi>aapcs <address-model>32
<architecture>arm <binary-format>elf <threading>multi <toolset>gcc
... [more similar alternatives omitted for brevity --dab]
    - C++11 mutex              : no
    - lockfree boost::atomic_flag : yes
    - Boost.Config Feature Check: cxx11_hdr_tuple : no
    - Boost.Config Feature Check: cxx11_lambdas : no
    - Boost.Config Feature Check: cxx11_noexcept : no
    - Boost.Config Feature Check: cxx11_nullptr : no
    - Boost.Config Feature Check: cxx11_rvalue_references : no
    - Boost.Config Feature Check: cxx11_template_aliases : no
    - Boost.Config Feature Check: cxx11_thread_local : no
    - Boost.Config Feature Check: cxx11_variadic_templates : no
    - Boost.Config Feature Check: cxx11_auto_declarations : no
    - Boost.Config Feature Check: cxx11_constexpr : no
    - Boost.Config Feature Check: cxx11_defaulted_functions : no
    - Boost.Config Feature Check: cxx11_final : no
    - Boost.Config Feature Check: cxx11_hdr_mutex : no
*Error: ambiguity found when searching for best transformation*
*Trying to produce type 'SEARCHED_LIB' from: *
*Generators that succeeded:*
* -  searched-lib-generator*
* -  emscripten.searched-lib-generator*
*First generator produced: *
* -  { %.no-action-icudata.SEARCHED_LIB }*
*Second generator produced: *
* -  { %.no-action-icudata.SEARCHED_LIB }*

to renew focus, the problem I am trying to solve is the last part there,
ambiguity when searching for best transformation.  it goes away if i
disable icu, but it just yields another similar error.  it was suggested
that I need to provide the default architecture to solve the problem, but
the way suggested to do that so far have not worked. your help is
appreciated!

Danielle Brake