https://svn.boost.org/trac10/ticket/12594 <p> Real command line: </p> <pre class="wiki">"C:\Work\_GitHub\boost\b2.exe" -q -s "ZLIB_SOURCE=C:\Work\_GitHub\zlib 1" --without-python --without-mpi define=_WIN32_WINNT=0x0501 define=_SECURE_SCL=0 define=_HAS_ITERATOR_DEBUGGING=0 toolset=msvc-12.0 --layout=versioned --build-type=complete --build-dir=bin.v2\vc120.static.xp.x86 --stagedir=stage\vc120.static.xp.x86 threading=multi address-model=32 variant=release link=static runtime-link=static stage </pre><p> After renaming directory "zlib 1" to "zlib" everything works. </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/12594 Trac 1.4.3