inflating: boost_1_63_0/tools/make-cputime-page.pl  
+ cd boost_1_63_0
+ ./bootstrap.sh
Building Boost.Build engine with toolset gcc... tools/build/src/engine/bin.linuxx86_64/b2
Unicode/ICU support for Boost.Regex?... /usr
Generating Boost.Build configuration in project-config.jam...

Bootstrapping is done. To build, run:

    ./b2
    
To adjust configuration, edit 'project-config.jam'.
Further information:

   - Command line help:
     ./b2 --help
     
   - Getting started guide: 
     http://www.boost.org/more/getting_started/unix-variants.html
     
   - Boost.Build documentation:
     http://www.boost.org/build/doc/html/index.html

+ COMMONb2Flag='-j 4 link=static runtime-link=static stage'
+ BOOSTModule='--with-locale --with-thread --with-filesystem --with-system --with-date_time --with-regex'
+ '[' Debug = Release ']'
+ '[' Debug = Debug ']'
+ ./b2 -j 4 link=static runtime-link=static stage --with-locale --with-thread --with-filesystem --with-system --with-date_time --with-regex variant=debug
Performing configuration checks

    - 32-bit                   : no
    - 64-bit                   : yes
    - arm                      : no
    - mips1                    : no
    - power                    : no
    - sparc                    : no
    - x86                      : yes
    - symlinks supported       : yes
    - iconv (libc)             : yes
    - icu                      : yes
    - lockfree boost::atomic_flag : yes
    - has_icu builds           : yes
error: Name clash for '<pstage/lib>libboost_system.a'
error: 
error: Tried to build the target twice, with property sets having 
error: these incompatible properties:
error: 
error:     -  <runtime-link>static
error:     -  <runtime-link>shared
error: 
error: Please make sure to have consistent requirements for these 
error: properties everywhere in your project, especially for install
error: targets.