Merge branch 'branch-0.3.1' into 'branch-0.3.1'

MS-261: update faiss version to 1.5.3 and add BUILD_FAISS_WITH_MKL as an option

See merge request megasearch/milvus!258

Former-commit-id: 2440281de94fe39aaca4a82460eb20b8603266bf

cpp/unittest/db/CMakeLists.txt

@@ -51,6 +51,10 @@ set(db_libs
 
 if(${BUILD_FAISS_WITH_MKL} STREQUAL "ON")
     set(db_libs ${db_libs} ${MKL_LIBS} ${MKL_LIBS})
+else()
+    set(db_libs ${db_libs}
+            lapack
+            openblas)
 endif()
 
 target_link_libraries(db_test ${db_libs} ${unittest_libs})

cpp/unittest/faiss_wrapper/CMakeLists.txt

@@ -40,6 +40,10 @@ set(wrapper_libs
         )
 if(${BUILD_FAISS_WITH_MKL} STREQUAL "ON")
     set(wrapper_libs ${wrapper_libs} ${MKL_LIBS} ${MKL_LIBS})
+else()
+    set(wrapper_libs ${wrapper_libs}
+            lapack
+            openblas)
 endif()
 
 target_link_libraries(wrapper_test ${wrapper_libs} ${unittest_libs})

cpp/unittest/metrics/CMakeLists.txt

@@ -69,6 +69,10 @@ target_link_libraries(metrics_test
         )
 if(${BUILD_FAISS_WITH_MKL} STREQUAL "ON")
     target_link_libraries(metrics_test ${MKL_LIBS} ${MKL_LIBS})
+else()
+    target_link_libraries(metrics_test
+            lapack
+            openblas)
 endif()
 
 install(TARGETS metrics_test DESTINATION bin)
\ No newline at end of file

cpp/unittest/server/CMakeLists.txt

@@ -50,6 +50,10 @@ set(require_libs
 
 if(${BUILD_FAISS_WITH_MKL} STREQUAL "ON")
     set(require_libs ${require_libs} ${MKL_LIBS} ${MKL_LIBS})
+else()
+    set(require_libs ${require_libs}
+            lapack
+            openblas)
 endif()
 
 target_link_libraries(server_test