id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
13267,b2 doesn't recognize ZLIB options other than ZLIB_SOURCE,Shintaro Sakahara <shintaro-sakahara@…>,Jonathan Turkanis,"Building Boost 1.65.1 on Windows with msvc-12.0.

b2 doesn't detect zlib with the command line below:

{{{
b2 toolset=msvc-12.0 --with-iostreams -sZLIB_INCLUDE=D:/Libraries/zlib-1.2.11/stage/x86/include -sZLIB_LIBRARY_PATH=D:/Libraries/zlib-1.2.11/stage/x86/lib -sZLIB_NAME=zlib variant=debug link=shared --stagedir=stage/x86 stage
}}}

and the following line is emitted:

{{{
    - zlib                     : no  (cached)
}}}

b2 detects zlib only when ZLIB_SOURCE is specified. However, since I built zlib with CMake and INSTALLed on different directory, zconf.h doesn't exist on the directory under the source directory from which Boost is about to include the file from. A workaround is to copy zconf.h from the actual include directory into the source directory when I run b2 and delete it after building is finished.",Bugs,new,To Be Determined,Building Boost,Boost 1.65.0,Problem,,,