diff --git a/cmake/external/openblas.cmake b/cmake/external/openblas.cmake
index 2341e3785bd8e951e10e3f6bbf8a32f63e4ae44d..5b9d9844ed21ceb507a8e01676c3533f4e3dd8fb 100644
--- a/cmake/external/openblas.cmake
+++ b/cmake/external/openblas.cmake
@@ -21,7 +21,8 @@ IF(NOT ${CBLAS_FOUND})
     SET(CBLAS_INSTALL_DIR ${THIRD_PARTY_PATH}/install/openblas)
     SET(CBLAS_INC_DIR "${CBLAS_INSTALL_DIR}/include" CACHE PATH "openblas include directory." FORCE)
 
-    SET(CBLAS_LIBRARIES "${CBLAS_INSTALL_DIR}/lib/${LIBRARY_PREFIX}openblas${STATIC_LIBRARY_SUFFIX}"
+    SET(CBLAS_LIBRARIES
+        "${CBLAS_INSTALL_DIR}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}openblas${CMAKE_STATIC_LIBRARY_SUFFIX}"
         CACHE FILEPATH "openblas library." FORCE)
 
     SET(COMMON_ARGS CC=${CMAKE_C_COMPILER} NO_SHARED=1 NO_LAPACK=1 libs)
diff --git a/cmake/external/protobuf.cmake b/cmake/external/protobuf.cmake
index ce32b2531e1c150fd40cfc6547a74eadaed202ea..d43badc1da50723d5d3dbd1f19f0bd4ef4d24737 100644
--- a/cmake/external/protobuf.cmake
+++ b/cmake/external/protobuf.cmake
@@ -25,9 +25,9 @@ macro(PROMPT_PROTOBUF_LIB)
     INCLUDE_DIRECTORIES(${PROTOBUF_INCLUDE_DIR})
 
     # Assuming that all the protobuf libraries are of the same type.
-    IF(${PROTOBUF_LIBRARY} MATCHES "${STATIC_LIBRARY_SUFFIX}$")
+    IF(${PROTOBUF_LIBRARY} MATCHES "${CMAKE_STATIC_LIBRARY_SUFFIX}$")
         SET(protobuf_LIBTYPE STATIC)
-    ELSEIF(${PROTOBUF_LIBRARY} MATCHES "${DYNAMIC_LIBRARY_SUFFIX}$")
+    ELSEIF(${PROTOBUF_LIBRARY} MATCHES "${CMAKE_SHARED_LIBRARY_SUFFIX}$")
         SET(protobuf_LIBTYPE SHARED)
     ELSE()
         MESSAGE(FATAL_ERROR "Unknown library type: ${PROTOBUF_LIBRARY}")
@@ -80,16 +80,16 @@ FUNCTION(build_protobuf TARGET_NAME BUILD_FOR_HOST)
     SET(${TARGET_NAME}_INCLUDE_DIR "${PROTOBUF_INSTALL_DIR}/include" PARENT_SCOPE)
     SET(PROTOBUF_INCLUDE_DIR "${PROTOBUF_INSTALL_DIR}/include" PARENT_SCOPE)
     SET(${TARGET_NAME}_LITE_LIBRARY
-        "${PROTOBUF_INSTALL_DIR}/lib/libprotobuf-lite${STATIC_LIBRARY_SUFFIX}"
+        "${PROTOBUF_INSTALL_DIR}/lib/libprotobuf-lite${CMAKE_STATIC_LIBRARY_SUFFIX}"
          PARENT_SCOPE)
     SET(${TARGET_NAME}_LIBRARY
-        "${PROTOBUF_INSTALL_DIR}/lib/libprotobuf${STATIC_LIBRARY_SUFFIX}"
+        "${PROTOBUF_INSTALL_DIR}/lib/libprotobuf${CMAKE_STATIC_LIBRARY_SUFFIX}"
          PARENT_SCOPE)
     SET(${TARGET_NAME}_PROTOC_LIBRARY
-        "${PROTOBUF_INSTALL_DIR}/lib/libprotoc${STATIC_LIBRARY_SUFFIX}"
+        "${PROTOBUF_INSTALL_DIR}/lib/libprotoc${CMAKE_STATIC_LIBRARY_SUFFIX}"
          PARENT_SCOPE)
     SET(${TARGET_NAME}_PROTOC_EXECUTABLE
-        "${PROTOBUF_INSTALL_DIR}/bin/protoc${EXECUTABLE_SUFFIX}"
+        "${PROTOBUF_INSTALL_DIR}/bin/protoc${CMAKE_EXECUTABLE_SUFFIX}"
          PARENT_SCOPE)
 
     SET(OPTIONAL_CACHE_ARGS "")
diff --git a/cmake/system.cmake b/cmake/system.cmake
index 904652413e026e3a7f3f2a19f48f4e906ce6babb..3b5cbfdd631b42ada49d0e1486824373dc69e519 100644
--- a/cmake/system.cmake
+++ b/cmake/system.cmake
@@ -84,24 +84,6 @@ IF(DEFINED CMAKE_SYSTEM_NAME)
     ENDIF()
 ENDIF()
 
-# prefix and suffix on different os
-IF(WIN32)
-    SET(LIBRARY_PREFIX "")
-    SET(SHARED_LIBRARY_SUFFIX ".dll")
-    SET(STATIC_LIBRARY_SUFFIX ".lib")
-    SET(EXECUTABLE_SUFFIX ".exe")
-ELSE(WIN32)
-    SET(LIBRARY_PREFIX "lib")
-    IF(APPLE)
-        SET(SHARED_LIBRARY_SUFFIX ".dylib")
-    ELSE(APPLE)
-        SET(SHARED_LIBRARY_SUFFIX ".so")
-    ENDIF(APPLE)
-
-    SET(STATIC_LIBRARY_SUFFIX ".a")
-    SET(EXECUTABLE_SUFFIX "")
-ENDIF(WIN32)
-
 # external dependencies log output
 SET(EXTERNAL_PROJECT_LOG_ARGS
     LOG_DOWNLOAD    0     # Wrap download in script to log output