Merge remote-tracking branch 'upstream/0.5.0' into branch-0.5.0-yk

Former-commit-id: cdb21d40ff34480f2efc0e8e51d6b2a2db137e1e

CHANGELOG.md

@@ -28,6 +28,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - MS-658 - Fix SQ8 Hybrid can't search
 - \#20 - C++ sdk example get grpc error 
 - \#23 - Add unittest to improve code coverage
+- \#31 - make clang-format failed after run build.sh -l
 
 ## Improvement
 - MS-552 - Add and change the easylogging library

core/build.sh

@@ -91,6 +91,10 @@ fi
 
 cd ${BUILD_OUTPUT_DIR}
 
+# remove make cache since build.sh -l use default variables
+# force update the variables each time
+make rebuild_cache
+
 CMAKE_CMD="cmake \
 -DBUILD_UNIT_TEST=${BUILD_UNITTEST} \
 -DCMAKE_INSTALL_PREFIX=${INSTALL_PREFIX}
@@ -115,7 +119,6 @@ if [[ ${RUN_CPPLINT} == "ON" ]]; then
     make lint
     if [ $? -ne 0 ]; then
         echo "ERROR! cpplint check failed"
-        rm -f CMakeCache.txt
         exit 1
     fi
     echo "cpplint check passed!"
@@ -124,7 +127,6 @@ if [[ ${RUN_CPPLINT} == "ON" ]]; then
     make check-clang-format
     if [ $? -ne 0 ]; then
         echo "ERROR! clang-format check failed"
-        rm -f CMakeCache.txt
         exit 1
     fi
     echo "clang-format check passed!"
@@ -133,12 +135,9 @@ if [[ ${RUN_CPPLINT} == "ON" ]]; then
 #    make check-clang-tidy
 #    if [ $? -ne 0 ]; then
 #        echo "ERROR! clang-tidy check failed"
-#        rm -f CMakeCache.txt
 #        exit 1
 #    fi
 #    echo "clang-tidy check passed!"
-
-    rm -f CMakeCache.txt
 else
     # compile and build
     make -j 4 || exit 1