updated build system

cmake/libraries/boost.cmake

@@ -1,5 +1,3 @@
-set(Boost_USE_STATIC_LIBS ${PROJECT_STATIC_LINK})
-
 if(PROJECT_ENABLE_BOOST)
   if(PROJECT_ENABLE_LIBBITCOIN_SYSTEM)
     set(BOOST_MAJOR_VERSION ${BOOST2_MAJOR_VERSION})
@@ -18,6 +16,9 @@ if(PROJECT_ENABLE_BOOST)
   )
 
   if(PROJECT_BUILD)
+    add_definitions(-DPROJECT_ENABLE_BOOST)
+
+    set(Boost_USE_STATIC_LIBS ${PROJECT_STATIC_LINK})
     find_package(Boost ${BOOST_MAJOR_VERSION}.${BOOST_MINOR_VERSION}.${BOOST_PATCH_VERSION} EXACT
       REQUIRED
       COMPONENTS
@@ -38,8 +39,6 @@ if(PROJECT_ENABLE_BOOST)
         wserialization
     )
 
-    add_definitions(-DPROJECT_ENABLE_BOOST)
-
     include_directories(BEFORE SYSTEM
       ${Boost_INCLUDE_DIRS}
     )