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 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