diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 758e37e5d..5a09a310c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -360,6 +360,9 @@ if(MULTI_THREAD AND (NOT ("${CMAKE_SYSTEM_NAME}" MATCHES "Darwin")) AND (NOT BOO
 endif()
 set(CMAKE_EXE_LINKER_FLAGS_TESTCOV "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
 add_library(leanstatic ${LEAN_OBJS})
+if (${CMAKE_SYSTEM_NAME} MATCHES "Windows")
+  set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--export-all")
+endif()
 add_library(leanshared SHARED ${LEAN_OBJS})
 target_link_libraries(leanshared ${EXTRA_LIBS})