On Windows static Boost libs are searched for.

As long as dynamically linking is not working on Windows we should not
try to do it.

scripts/cmake/ExternalProjectBoost.cmake

@@ -38,6 +38,9 @@ IF(NOT Boost_INCLUDE_DIRS)
 	IF(IS_DIRECTORY /opt/boxen)
 		SET(BOOST_ROOT /opt/boxen/homebrew)
 	ENDIF()
+	IF(WIN32)
+		SET(Boost_USE_STATIC_LIBS ON)
+	ENDIF()
 	FIND_PACKAGE(Boost 1.46.0 COMPONENTS ${BOOST_LIBS_TO_BUILD})
 	IF(Boost_FOUND)
 		SET(Boost_FOUND TRUE CACHE BOOL "Was Boost found?" FORCE)