added zlib

cmake/boost.cmake

@@ -31,6 +31,9 @@ if (UNIX OR MINGW)
       linkflags=-std=c++${CMAKE_CXX_STANDARD}
       threading=multi
       variant=${CMAKE_BUILD_TYPE_LOWER}
+      -sZLIB_BINARY=zlibstatic${DEBUG_EXTRA}
+      -sZLIB_LIBPATH="${EXTERNAL_BUILD_ROOT}/lib"
+      -sZLIB_INCLUDE="${EXTERNAL_BUILD_ROOT}/include"
   )
 
   if (MINGW)
@@ -124,7 +127,6 @@ elseif(MSVC)
       ${BOOST_COMMON_ARGS}
   )
 
-  add_dependencies(boost_project zlib_project)
   set(BOOST_ROOT ${BOOST_BUILD_ROOT}/src/boost_project)
   set(Boost_INCLUDE_DIR ${EXTERNAL_BUILD_ROOT}/include/boost-${BOOST_VERSION_DLL})
   set(Boost_LIBRARIES
@@ -135,3 +137,5 @@ elseif(MSVC)
     ${EXTERNAL_BUILD_ROOT}/lib/libboost_system-vc${BOOST_MSVC_TOOLSET_DLL}-mt-${BOOST_DEBUG_EXTRA}${BOOST_DLL_ARCH}-${BOOST_VERSION_DLL}.lib
   )
 endif()
+
+add_dependencies(boost_project zlib_project)