add approval for changing warning flag (#42875)

* add approval for changing warning flag

* test for approval

* revert changes

tools/check_file_diff_approvals.sh

@@ -360,6 +360,23 @@ if [ "${OP_FILE_CHANGED}" != "" ] && [ "${GIT_PR_ID}" != "" ]; then
     fi
 fi
 
+CMAKE_FILE_CHANGED=`git diff --name-only --diff-filter=AMR upstream/$BRANCH |grep -E "\.cmake|CMakeLists\.txt"  || true`
+if [ "${CMAKE_FILE_CHANGED}" != "" ] && [ "${GIT_PR_ID}" != "" ]; then
+    ERROR_LINES=""
+    for CMAKE_FILE in ${CMAKE_FILE_CHANGED};
+    do
+        CHECK_OBJECT_FLAGS=`git diff -U0 upstream/$BRANCH ${PADDLE_ROOT}/${CMAKE_FILE} |grep "+" |grep -E "\-Wno\-error" || true`
+        if [ "${CHECK_OBJECT_FLAGS}" != "" ]; then
+            ERROR_LINES="${ERROR_LINES}\n${CMAKE_FILE}${CHECK_OBJECT_FLAGS}\n"
+        fi
+    done
+    if [ "${ERROR_LINES}" != "" ]; then
+        ERROR_LINES=${ERROR_LINES//+/'\n+\t'}
+        echo_line="Change compilation flag of warnings is not recommended. You must have one RD's (zhiqiu (Recommend), luotao1 or phlrain) approval to use these methods. "
+        check_approval 1 6888866 47554610 2002279
+    fi
+fi
+
 NEW_OP_TEST_ADDED=`git diff --name-only --diff-filter=AMR upstream/$BRANCH |grep -oE "test_.*.\.py" || true`
 if [ "${NEW_OP_TEST_ADDED}" != "" ] && [ "${GIT_PR_ID}" != "" ]; then
     CHECK_OUTPUT=`git diff -U5 --diff-filter=AMR upstream/$BRANCH |grep "self\.check_output(a*t*o*l*=*[0-9]"|grep "+" || true`